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1. a CULTE D zi ee I 2X1 O O Absolute Center Search Direct Drive Quartz Lock Computing Turntable 1 100 000 ALLE DAF E F E PrLA AN TIA SN ATI Lh Peh xe amp a ra v N 4207772 IN 7 1 2 BFA YFL avra AL 2 77 2 4 gt gt gt 21773239 gt gt 12 2 729 X47F247 5 WN ub JTLLa4 3 TZJV buz2 43 3 38 N D AT e ug gt gt 1 Ic A9A1Mfqi 4 fi X x52 mhL PRECHA RARR 44 U Z7 HV DE Er 4 7 If Trv Asa 9 8 2 ZIP HARTIS I Tal 9 KAR This model is very much sought after here in Europe commanmding prices at around 5000 Dollars if you re able to grab one There actually were a lot of decks around of them in the 80s but it seems that if someone has one he usually won t sell it Nakamichi Dragon 951 5 b ZI ERGS32 M2 amp NE CT This turntable completed the famous Dragon Line of Nakamichi Build quality design and mechanical engineering from another universe Seldom seen it commands high prices too HOME The Hows And Whys Owning a DD Museum Tech Talk DirectDrive And Whys DirectDrive The Hows Owning a DD DirectDrive DirectDrive Mu
2. once engineer at Grace the FR64s still is a hot ticket for pickups like the SPU or the Denon DL 103 Note that s means steel arm tube instead of alloy with the FR64 and not silver wiring which was available for all Fidelity Research arms at extra cost Silver wired arms feature a silver badge on the arm s package Fidelity Research FR64fx Not that heavy with anodized arm tube The anodization damps arm resonances but it also few notes on the improved version of the SME 3009 You will find it difficult to mount a MC cart on it cause tracking force is limited to 1 5g Heavy systems cannot get balanced too Additional weights are available from SME but they come at a hefty price The models without detachable head shell are a nightmare for mounting your cart The best SMEs are the SME 3009R or SME 3012R early Model 115 They feature a steel arm tube instead of alloy and early models had metal knife bearings instead of nylon with the models of the 70s The long 3012 sounds a bit more refined and more adult than its short brother Even today you can have your 3009 restored to original condition at SME in England SME I V V Sis Aa arm in the world P I Es E In my opinion one of the best arms ever build Build quality is top notch an changing carts with these arms is a pleasure All alignments except azimuth are easily done and reproducable The sound of these is a class better than all other
3. Outsourcing Das Netz Das Netz ist gerade bei fr heren Direktl ufern wie dem oben abgebildeten Sony 2250 ein nicht zu untersch tzender Feind So ganz netzunabh ngig arbeiten gerade die fr hen Servo Regelungen selten Daher sollte man zun chst einmal die serienm igen Netzkabel durch geschirmte Leitungen ersetzen und evtl ein gutes Netzfilter einsetzen um St rungen von der empfindlichen Regelungselektronik fernzuhalten Bezugsquellen e Ein EMT Kenner e Alles f r EMT Neuger te Gebrauchtger te Ersatzteile e Dasselbe mit Profi im Namen e Alles f r Technics SP 10 Neuger te Gebrauchtger te Modifikationen Ersatzteile DirectDrive HOME DirectDrive Warum DirectDrive Praxis DirectDrive Museum DirectDrive KnowHow Goldmund Kenwood Luxman sehen STUDIO Schweizer Hersteller der in den 80er Jahren mit seinen direktangetriebenen Laufwerken neue Ma st be setzte sowohl klanglich als auch preislich Japanischer HiFi Hersteller der Ende der 70er mit dem L 07 einen der besten jemals gebauten Direktl ufer vorstellte Renommierter japanischer Hersteller von edlen HiFi Komponenten Anfang der 80er Jahre trat Luxman als Pionier von Plattenspielern mit Vakuum Ansaugpumpen in Erscheinung Micro Seiki war ein japanischer Hersteller der sich auf die Produktion von Plattenspielern spezialisiert hatte Bekannt ist insbesondere das Modell DQX 1000 da die M gl
4. precise regulation and rigid coupling between the motor and the platter Compare this to your typical belt drive deck Some might argue that a very heavy platter won t slow down because of its sheer mass this is not the case Even worse when the motor regulation tries to speed up this platter will react much slower than a light one It s like driving a mountaineous way with a truck I would prefer Porsche Coupling the motor to a heavy platter with a string is questionable too Whoever changed the tension of the string of a Platine Verdier platter weight around 50pds knows what mean Some enthusiasts take even tape instead of a belt to improve coupling the motor to the platter Now speed stability may improve but there is no filtering of motor resonances any more Negative effects of the needle slowing the platter during heavy modulations are best avoided by incorporating a fast and precise speed regulation a not too heavy platter rigidly coupled to a strong motor best the platter is bolted to the motor like with the Technics SP 10Mk2 With such a deck speed fluctuations during playing a Wagner opera will eventually become neglectable How does it sound Good direct drive turntables tend to sound very neutral they deliver what is on the record not less and not more no foot whipping effects like some scottish belt drive just pure information Musicality is produced of course but only if it S on the record As t
5. Ak MUT d 4 vavk wTv7 5 le Ra m 010458 AL ELMT3ROUN 4 24 7 191588 7244 Pr sem QR Mum d f AE 47 P 5 AT Tek PA MET 579 A VR Sk A RG 140118 151588 2 442 aeg D m j 2700 y 5 20y PIA XI Bos Dr va gt 3 T 774 EBEN jJMRPM wt SE 120 45RPM 22 im fot t NEN 2 2 422 4 TAA Pao LIE s i K pam 00 EUN 2 131 ud 9 542 ME ent T am 4 Min Wik 3 xw ty Ph CHER a BAMMEM2UDEA hwre F Die Zarge Das Chassis des SP 10 wurde entfernt die Elektronik ist in separaten Geh usen untergebracht Herr Kaneta bevorzugte wie viele japanische Enthusiasten den langen SME3012 Tonarm Die unten abgebildete Zarge wurde nach Originalpl nen von H Kaneta aus Lindenholz angefertigt Eine Menge Holz Die fertigen Boards Von unten nach oben Und jetzt fast fertig Von der Seite Der Motor ist eingebaut DirectDrive HOME DirectDrive Warum DirectDrive Praxis DirectDrive Museum DirectDrive KnowHow und Preise Ersatzteilversorgung und vieles mehr rund um den Direktantrieb behandelt Herzlich willkommen in der Welt der EMT s Denon s Technics Ich freue mich Uber Anregungen Korrekturen Meinungen zu dieser Site Nobody s perfect Auch uber Date
6. Goldmund Studio STUDIO Introduced in 1984 the Goldmund Studio was one of the few decks built in small numbers featuring the Direct Drive Typical for Goldmund were the chosen materials like acrylic platter and plinth and the unique linear arm The T3 linear arm worked with an electronic regulation driving a motor therefor the second arm The price for the Studio was very high at around 7500 Dollars so even now these decks are not cheap Take care of the arm as it s quite fragile and very hard to adjust Goldmund Studietto This Studietto belongs to Mr Kostas Louizos The Studietto is the little brother of the Studio but when introduced in the late 805 costed 4500 bucks For your money you got a very good turntable and a not so good linear arm the T5 which worked like the T3 but lacked a bit of bass This is the same arm which was mounted to later Audiomeca turntables You won t find good examples of this breed under 2000 Dollars HOME Hows And Whys Owning a DD Museum Tech Talk DirectDrive Museum Trio Kenwood HOME DirectDrive The Hows 1110 Kenwood was a major player in the game during the golden age of innovation and And Whys performance Trio Kenwood was the first company that made some efforts towards Diedie Ouieta resonance damping plinths In the mid 70s Kenwood started to use materials like artificial DD stone and corian which led to the development of the legendary L 07D in 1
7. Trio was serious about resonances that days Don t know what it s worth as have never seen one on the used market 1000 u KENN E 2 EZ HOMEB The Hows And Whys Owning a DD Museum Tech Talk DirectDrive Museum Luxman HOME DirectDrive The Hows Luxman is known for quite advanced electronics and is a brand name of And Whys Dh the japanese Lux Corporation In the DD 70s Luxman sold some fine decks with Direct Drive In the 80s Luxman was a pioneer in developing vacuum DirectDrive Tech Talk sthilized platters where the record DirectDrive Tonearms was pressed to the table by means of a vacuum pump DirectDrive Museum Luxman PD 121 This one pictured with a Grace GA 704 tonearm is seen quite often nowadays as it was often sold at least here in Germany The looks are definitely better than its sonics so a PD 121 usually can be had quite cheap at around 200 250 Dollars As with all Luxman decks it is almost impossible to put the deck into a different plinth a well decoupled table is a must with these Luxman PD 441 gt Simply said the PD 441 is a PD 444 without the possibility to mount two tonearms Sonically it performs not as good as its big brother cause its plinth is lighter 2nd hand wise it s condiderably cheaper and sells for the half of his big brother Like many japanese decks of the late 70s early 80s the massive platter rests on a ma
8. covered above Again beware of defective magnetic rings as they are now quite common with these decks The plinth of the DP 2500 is actually nothing more than a upside down shoe carton made out of wood forget about it As with all Denons you should build your own massive plinth and that done take care of getting rid of the nasty plastic covering of the electronics too Denon DP 1000 The little brother of the DP 2000 was the DP 1000 The plinth was available as DK 77 Di 1000 Y 23 000 LIT us 417 ellie iio 13 trom 95 y T n if Mics pl Ta o _ 4 ums ER DER WRMS 25 emmu WIS HpL2x DS e DK 77 et r r em v Lu n be Mox Hox eg Denon DP 100 ct 15 000 e 05 250 1 244 Dynamic Servo Tracer X RIGDP 100M Ahh LM PF Fl ADK BATT rosewood plinth most DP 100 s were sold to radio stations without a plinth and then may look like this The DP 100 was Denon s answer to the EMT 950 Someone considers this deck as the best ever made Direct Drive turntable This is a very rigid stable and heavy machine incorporating a well designed suspension It goes for very high prices mostly on the japanese market Denon DP 80 Here you see one in custom made mahagony plinth with SME and SAEC tonearms The DP 80 is quite easy to find and wor
9. for broadcasting stations and record studios Denon DN 307 o 3 PEN AR The Hows And Whys Owning a DD Museum Tech Talk DirectDrive Museum HOME DirectDrive The Hows EMT decks were meant for the domestic And Whys DirectDrive Owninga Market since EMT was the DD leading company for transcription turntables sold to broadcast studios all over Wond 1976 Was tie DirectDrive Tonearms year when EMT made his first Direct Drive deck the Schallplatten Wiedergabe Maschine 950 ooh what a name The 950 and its little brother the 948 are real symbols of Made In Germany With their high prices and their dead serious professional design no audiophile in the 70 s or 80 s had an EMT at home That changed at the end of the 80 s at least here in Germany when the broadcasting studios got rid of their decks in favor of the CD and lots of people bought an EMT deck for domestic use Even today you get spare parts for them in Lahr Germany at hefty prices DirectDrive Museum EMT 950 similar to vinyl discs 2nd hand wise here in Germany you come across quite easily since most broadcast studios had got rid of them during the 80 s Since then a lot of machines made their way to the land of the rising sun with japanese audiomaniacs paying very high prices for these decks An EMT 950 costs around 2000 Dollars in Europe with restored o
10. name of the base with round cut out AX 2 the name of the base with SME cutout Both were made out of aluminium alloy There were also zinc brass alloy variants of these bases which has a G after their name i e AX 2G A tabgle which shows you which arm for which base is here Also take care of the feet as the rubber tends to break up after 20 years Early DDX 1000 seem to corrode very easily depending on the athmosphere the table was stored Later DDX 1000s and all DQX 1000s were coated with some kind of anti corrosion sealant Good isolation is very important when using a DDX DQX 1000 Wall shelfs or sand filled boxes make a good isolation stand for those beautiful machines As for mods dampening out the aluminium plinth with tar sheets and dampening the platter were the most common mods in the 805 Micro DQX 500 This is the pretty little brother of the DQX 1000 It came out in 1984 and featured a carbon arm the CF 1 Costing 500 Dollars then many decks found their way in the home of audiophiles Today many people buy this deck mostly out of nostalgic and for looks so it s not cheap at around 350 Dollars Take care about the rubber feet too Micro DD 100 DDL Series Most turntables of the DDL Series never made it to Europe or Northern America The DDL 100 and especially the DDL 150 are nevertheless very fine turntables which look like a hybrid of the earlier DD series and the popular belt driven BL series All of them featured a
11. oss USER 05 seo wes TECHNOS voton Ua7045 708 Axio MICRO 1 MA SO5XII STI SOSMK III 808X AUDIO CRAFT 3000 300 11 AX 9G 2 94 7 2815977 gt 8000 5000 15008 9GA SGFAMLAA FEUANT LIE MA 505X 11 gt 505511 gt 505MK LIII Ax4G SME 30230128 AX 5G AUDIO TECHNICA AT 15031I 15031 FR FR 64 645 648 64 LAICH TH 514 amp 12AX 3G 5 BU FSU 1 6G 8G 12 000 AX 9G 34 000 SGF AUDIO TECHNICA AT 1100 1010 DirectDrive The Hows And Whys DirectDrive Owning a DD DirectDrive Museum DirectDrive Tech Talk DirectDrive Tonearms DirectDrive Museum Nakamichi Nakamichi entered the arena of big analog players late Having made its reputation in the 70s by producing state of the art tape decks like the legendary Dragon the big experience in advanced mechanics allowed Nakamichi to introduce some of the most innovative Direct Drive players ever built The TX 1000 and the Dragon turntables are somewhat of a work in art which nowadasy sadly are almost forgotten The idea of Absolute Center Search even today seems ingenious These players are absolute top notch and under some aspects even today they don t have found their successor TX 1000 coming Taname v1100 000 Nakamichi TX 1000 M gt 7 Tree re ur a a
12. turns very slowly and had a high mass the platter coupled to it mechanically this solution seemed almost ideal The problem was that no motor runs completely smooth a motor tends to jump from pole to pole so the motor turning had to be controlled electronically An electronic reference signal was compared to a tachometer signal of the underside of the platter and the difference signal was used to regulate the motor That way the Technics engineers achieved very steady and smooth turning of the SP 10 s heavy platter This regualtion together with quite a strong motor allowed a very fast startup time too The Direct Drive turntable was born Introduced in 1969 the National technics SP 10 was an immediate success Radio stations all over the world used an SP 10 and only a few months later other japanese audio companies like Nippon Columbia Denon Victor JVC and Sony presented Direct Drive turntables of their own Direct Drive At Home But the japanese companies thought further At the end of the 605 the domestic audio market all over the world began to explode More and more music lovers bought audio systems and a market evolved where big money was to be made Companies like Dual Thorens or Garrard then were the traditional big names in turntables By reducing the number of then already expensive mechanical parts the japanese were able to offer equal sounding and looking decks which costed considerably less to produce and t
13. uft Finger weg Hier ist das Tellerlager hin ber und das ist in der Regel irreperabel Besitzt das Ger t Gleichlaufschwankungen Gleichlaufschwankungen haben bei Direktl ufern prinzipbedingt meist ihre Ursache in einer defekten Motorregelung Defekte Bauteile f r Hallgeneratoren oder gar Quartz Steuerungen sind heutzutage kaum mehr aufzutreiben Bei JVC und Denon Plattenspielern tasten Tonk pfe eine Magnetschicht im Teller ab um hieraus ein Tachometer Signal zu generieren Ein Defekt hier ist irreperabel Manchmal ist allerdings auch nur der Tonkopf dejustiert hier kann man dann ein Schn ppchen machen Aber bei 9096 aller angebotenen Dreher gilt auch hier Finger weg Optischer Zustand des Ger ts Diesen kann man oft noch selber verbessern Hier man auch entscheiden inwieweit man mit rein optischen Macken leben kann Ein regelm ig gewartetes Rundfunkgerat ist oft optisch in einem erb rmlichen Zustand technisch aber top Der Zustand der Holzzargen bei Einbauger ten ist eigentlich nur f r Sammler interessant Die meisten taugen eh nicht zum ernsthaften Musikh ren und sollten durch eine Eigenkonstruktion ersetzt werden Tonarme Tonabnehmer Oft werden diese Plattenspieler zusammen mit Tonarmen und Tonabnehmern angeboten Dies kann den Wert eines solchen Plattenspielers erh hen falls der Tonarm in gutem Zustand ist und falls man diesen berhaupt will G ngige Tonarme aus den 70er Jahren erreichen in etwa die Qual
14. 27 Columbia Gramophone Company became the sole parent and the company was subsequently re named Nippon Columbia Over the course of the twenties and thirties Nippon Columbia branched out to the far East markets and also began sales of radio broadcast equipment In 1938 Nippon Columbia established Denon as their professional equipment brand concurrent with the introduction of the world s first direct drive turntable for studio use shortly after 1939 Denon since made a few audio legends like the venerable DL 103 which since 40 years seems to be very much appreciated among audiophiles Beside Technics and Sony Denon was among the first building Direct Drive turntables for the professional market In the 70 s their broadcast turntables like the famous DP 6000 were offered for the domestic market with pretty wood plinths These models were true high end in the 70 s considering their sound and their price Denons are unique for their almost space age like round UFO design Or as my wife use to say the salad bowl Denon DP 5000 The first big direct drive from Denon was the FG Servo controlled DP 5000 pictured here with the DK 100 plinth and a Fidelity Research arm This model featured the unique regulation where a magnetic head reads the imprints of a magnetic tape under the platter Denon DP 6000 Pictured is a Denon DP 6000 with SME 3009 52 arm in the original plinth The DP 6000 is definitely a top deck but it s rar
15. 980 DirectDrive Museum DirectDrive Tech Talk DirectDrive Tonearms Trio Kenwood KD 550 The KD 550 was a bit of a Rega of his time In the 70s the KD 550 was one of the cheapest DirectDrive decks that you could fit with an arm of your likes Sonically the KD 550 was just the ticket if you wanted to smoke your neighbours Thorens With good solid plinth heavy platter and solid motor regulation this deck stands to his guns even by todays standards Used prices today have already reached the new price of the deck at 300 Dollars Kenwood L 07D PAVE CHILE BEDI FLO CAT RRO Ses ob f Kenwood s statement in 1980 70 pounds of ingenious engineer s work made out of aluminium and incorporating corian to the turntable market for the first time The platter weighs a whopping 11 pounds and is fitted with a steel mat The main bearing is supported by magnets underneath the platter Sonically the 107 is a very fine deck with his then innovative tonearm leaving some precision in the bass But fit an SME V on this machine and place it on a well decoupled stand and this monster will play in the champion s league of today s turntables Rarely seen you have to pay around 1000 Dollars for a nice one Kenwood KP 1100 Only available in Asia the 1100 was clearly inspired by the venerable LO7 but looking much more like a conventional turntable Look at the aluminium chassis pictured above and you will see that
16. Es gab ZU dieser Zeit nicht ein Top Modell ohne Stroboskop Die Fertigungsqualit t ist exemplarisch Zargen und Tonarme ber den guten Klang entscheidet eine robuste schwere Zarge und ein gut entkoppelter Stellplatz Bei vielen hier vorgestellten Laufwerken handelt es sich um sog Einbaulaufwerke Das hei t da der K ufer lediglich das Chassis erwirbt und dieses dann selbst in eine Zarge einbauen mu Die Qualit t vieler herstellerseitiger Zargen entsprach nicht ann hernd der Qualit t des Laufwerks Dies gilt insbesondere f r Modelle von Denon JVC und Sony Andererseits bietet die M glichkeit die Zarge individuell an zufertigen auch grofse Vorteile Man kann auf diese Weise den Klang eines Laufwerks auf die Kette daheim und den eigenen Geschmack ab stimmen und erh lt auch optisch ein Unikat Auf den Bau von Zargen wird hier genauer eingegangen Die Tonarme die auf Direktl ufern zu dieser Zeit montiert waren gen gen heutigen Anspr chen ebenfalls meist nicht mehr Bei den Modellen die hier vorgestellt werden handelt es sich fast ausnahmslos um Modelle die herstellerseitig ohne Tonarm ausgeliefert wurden so da die Montage eines modernen Arms normalerweise kein Problem darstellt Haben Direktl ufer auch Schw chen Ja und wie In den 70er und 80er Jahren gab es hunderte Billigdreher mit Direktantrieb die das schlechte Image des Direktantriebs erst begr ndeten Schlechte Zargen billigste Materialien f r Telle
17. Most recommended models which are covered in depth here were delivered without an arm so the customer could install his own So putting a decent modern arm on such a turntable isn t a big problem Caveats and drawbacks Yes quite a lot Almost 9096 of the direct drive record players of the 70s and 80s were cheap and nasty machines this is the real reason for the bad image of the Direct Drive principle among most audiophiles These players were composed out of light plinths lots of plastic and cheap materials for platter and main bearing and flooded the mass market mostly because they were cheap You won t see those models on this site As for the others most of them had absolutely no suspension so you need to have a special turntable table or even better a wall mounted shelf to decouple the player from its sorroundings You won t get any spare parts for this machines as right now most of them are more than 20 years old A burned motor of a Denon usually means the end for that player unless you re lucky and find a second one which you use for the job Electronic parts like hall generators or some Op Amps and trannies are getting more and more difficult to find these days If you ll need these prepare yourself for a long search Some kind of service is still available for EMT at not so nice prices and for the Technics SP 10 BUT most machines you will see here were built like a tank and if not seriously abused wi
18. PA 500 now are very rare and hard to find The Hows And Whys Owning a DD Museum Tech Talk DirectDrive Kaneta HOME DirectDrive Warum DirectDrive Praxis DirectDrive Museum DirectDrive KnowHow DirectDrive Tonarme Der japanische Professor Akito Kaneta hierzulande bekannter unter dem Namen Kaneda investierte viele Gedanken in die Modifikation der Technics SP 10 Familie Heraus kam eine einizigartige Motorsteuerung und ein Bauvorschlag f r eine Zarge Vielen Dank an H Aschenbrenner vom Auditorium23 f r das mir zur Verf gung gestellte Material Die Motorsteuerung Die Motorsteuerung publizierte Herr Kaneta in einem seiner zahlreichen B cher Ausz ge aus diesem japanisch geschriebenen Buch mit der Schaltung und Platinenlayouts finden Sie hier Auf eine Quartzregelung wurde zugunsten eines sehr genauen Referenzspannungsgenerators verzichtet Insbesondere f r etwas betagtere Technics 5 10 1 erscheint diese Motorsteuerung eine sehr berlegenswerte Alternative zu sein Probleme k nnten aber bei der Beschaffung der etwas antiquierten Bauteile auftreten Hier die Schaltungen Eir r S00 g COR WO L dS t PAvAyY pony Ty 9 2 2 400 47 ecu p E LM 3800N 181588 9204 Ir GD rl Aal ya acct 7 A EAS 5100 PNR b Dy Av IY baw Pet A asco NT AE RLMTS800N A 181588 92 Tr nA 500 D p E Ld AD 62694 D s
19. Verwechslungen ausgeschlossen sind und Fehlanzeigen aufgrund schwankender Netzfrequenz werden vermieden Bei derma en hochwertigen Antriebssystemen ist die Konstanz der Plattentellerdrehzahl weit besser als die der Netzfrequenz Wandert bei einer solchen Anordnung das Stroboskopbild ist der Geschwindigkeitsregelkreis nicht mehr eingerastet Der Schaltungsaufwand ist erheblich Der 5 10 enth lt in seiner Urform 108 Transistoren 14 IC s und 32 Dioden und Gleichrichter Sie verteilen sich auf 6 Leiterplatten von denen 4 unterhalb des eigentlichen Laufwerks und zwei in der in einem getrennten Geh use untergebrachten Stromversorgungseinheit angeordnet sind Und so sieht ein Motor und das Lager eines SP 10Mk2 aus Sooo viele Kabel A DirectDrive DirectDrive DirectDrive HOME DirectDrive Warum DirectDrive Praxis ER EXP E 2222 Museum KnowHow Die Gr nde warum Tonabnehmer immer wieder anders beurteilt werden hat Ihre Ursache oft darin da ein nicht zum Abnehmer passender Arm verwendet wurde und da die J ustagearbeiten nicht sauber ausgef hrt wurden Kabel Das Tonarmkabel ist das sensibelste Kabel innerhalb eines Audio Systems Bedenken Sie da bei MC Systemen nur winzigste Spannungen zum Vorverst rker flie en Die Diskussion welches Kabel an dieser Stelle am besten klingt berlasse ich gerne anderen ich verwende gerne RG 58 und RG 174 Koax Kabel aber Kanalungleichheiten aufgrund schlechter L
20. Welcome At DirectDrive HOME DirectDrive The Hows And Whys DirectDrive Owning a DD DirectDrive Museum DirectDrive Tech Talk DirectDrive Tonearms Granted the performance of many of todays tables might be just as good as their vintage counterparts but it is the way these vintage machines spin the platter with their classic looks strobes lights and countless gimmics This site shows you remarkable models and covers subjects like history technical stuff tuning building a plinth buying 2nd hand prices spare parts and many more stuff around Direct Drives Welcome to the world of EMTs Denons Technics would be glad to hear from visitors of this site If you have comments or questions don t hesitate to mail 1 would also appreciate pictures comments and data sheets regarding direct drive decks Mail me HOME Hows And Owning a DD Museum Tech Talk zu Whys are eco DirectDrive The Hows Whys HOME DirectDrive The Hows And Whys DirectDrive Owning a DD DirectDrive Museum DirectDrive Tech Talk DirectDrive Tonearms How does it work What are the advantages How does it sound What does it cost How does it look Some words about plinths Caveats and Drawbacks How does it work Inthe end of the 60 s engineers at National Technics found that to better the reproduction of analog records you have to minimize the number of moving parts especially the number of b
21. annt hat Ansonsten h rt man zwar bei Tuning Ma nahmen durchaus Unterschiede kann jedoch oft nicht mehr beurteilen ob und wieviel es denn gebracht hat Die beliebtesten Tuning Ma nahmen bei Direktl ufern sind e Plattenklemmen Gewichte Vor dem Einsatz einer Plattenklemme oder eines Gewichts da w hrend des Abspielens auf der Platte plaziert wird sollte man erstmal checken ob das berhaupt m glich ist Die Tellerspindeln dieser Zeit erlauben n mlich oft weder das Zupacken einer Plattenklemme noch das exakt zentrische Aufsetzen eines Gewichts Bei Gewichten steigt die Belastung des Tellerlagers und auch die Ger usche des Tellerlagers bei Modellen mit schwachen Motoren k nnen diese sich in die ewigen J agdgr nde verabschieden da beim Hochlauf die Regelung den Motor berfordert Beim Einsatz mit Gummimatten besteht die Gefahr Staubpartikel in die Platte zu pressen Ich verwende kein s von beiden Tellermatte Bei vielen Modellen aus japanischer Produktion klingt der Teller wie die sprichw rtliche Glocke Die damals verwendeten Gummimatten d mpften die Tellerresonanzen auf ein ertr gliches Ma besa en aber oft viele Ringe und Riefen F r guten Kontakt mit der Platte ist eine m glichst glattfl chige Oberfl che der Matte von Vorteil Oft erreicht man schon eine deutliche Verbesserung durch Auflegen einer m glichst d nnen Filzmatte Linn auf die serienm ige Gummimatte Auf meinem SP 10 benutze ich eine d nn
22. arms mentioned here With some carts it might sound a little too dry but always lightning fast and rock solid The Van den Hul cable supplied with the SME V is too long and thins out the sound a little in my opinion the considerable price difference between the two makes the IV the better choice The Hows And Whys Owning a DD Museum Tech Talk DirectDrive The Hows And Whys DirectDrive Owning a DD DirectDrive Museum DirectDrive Tech Talk DirectDrive Tonearms DirectDrive Geschichte History of Direct Drive starts in 1929 when Thorens took a patent for agrammophone with direct driven platter But 40 years had to pass until finally turntables with Direct Drive made their way to recording studios radio stations and homes of music lovers all over the world The history of Direct Drive turntables really starts with the introduction of the National Technics SP 10 in 1969 The Beginnings The beginnings of the Direct Drive era are connected with the brand National Technics and their efforts to build a professional transcription turntable for broadcast users At the end of the 605 almost every radio station in the world used an EMT deck The EMT 930 was the ideal transcription turntable capable of fast startup and rock steady turning the platter This was achieved by using an idler drive rigidly coupled to a very heavy inner platter By coupling a light outer platter to the already turning inn
23. as Netzteil wenn nicht eh schon extern outsourcen hiermit hat man meist schon 50 des Outsourcing Potentials erreicht St rungen durch den Netztrafo wie Beeinflussung anderer Baugruppen Quartz oder Vibrationen werden hierdurch vermieden Viele Laufwerke enthalten eine Bremse die ebenfalls mechanische Resonanzen weitergibt Im Privatbereich ben tigt man diese eh nicht also raus damit Man kann bei entsprechenden F higkeiten aber auch noch weiter gehen und alle Baugruppen des Plattenspielers bis auf Tellerlager und Motor aus dem Chassis entfernen Radikalisten entfernen selbst das Chassis selber und bauen ein eigenes Bedienfeld Auch Akito Kaneta fand offensichtlich keinen Gefallen am originalen Chassis des Technics SP 10 Ein SP 10 ala Kaneta wird auf der Kaneta Seite vorgestellt All diese Ma nahmen bringen wirklich etwas da insbesondere Beeinflussungen der Motorsteuerung durch andere Bau gruppen minimiert werden Inwieweit der Aufwand das Resultat lohnend erscheinen l t mu jedoch jeder selbst entscheiden Elektronik Auch hier existiert Tuning Potential Tuning Ma nahmen erstrecken sich vom Abklemmen des Stroboskops beim Technics SP 10 ist auch das Stroboskop quartzgesteuert der Quartz kann sich nunmehr v llig der Motorsteuerung widmen ber sternf rmige Erdung aller Platinen an einem definierten Punkt bis zum kompletten Aufbau eigener Steuerungen Hier ist jedoch meist nicht so viel rauszuholen wie beim
24. ble to fix the arm easily Leave at least 30mm 1 25 of wood to all necessary cutouts Now cut out the top shelf according to your deck a template is very good to have with your jig saw Then put in your deck to see whether everything fits and mark the distance of the effective tonearm length measured from the spindle on the shelf This is the centre of the tonearm hole You should leave at least 50mm 2 wood between the tonearm hole and the cutout for the turntable That means you might run into problems with some decks like the Technics SP 10 if you use a short 9 arm the arm centre then has to move to the front By the way if you want to mount an SME3009 with a Technics SP 10 the SME cutout hole must face straight forward Now cut out the arm hole in the top shelf with a diameter between 20 35mm 0 75 1 4 depending on your arm Now take the top shelf as a template for the other shelves Keep in mind that the tonearm hole on all other shelves should have a diameter of at least 70mm 4 that you re able to mount the nut to the tonearm s shaft afterwards Keep in mind too that many decks need less air goin downwards so the deck s cutout can and should be smaller the lower you get And keep in mind that with decks like the SP 10 where the nuts are tightened from the underside of the deck you have to leave space for the nuts as you might want to be able to screw them after you re finished It s quite good for the last one or two sh
25. ck options as they are highly sought after by audiomaniacs in Japan an irony itself The number of decks around is decreasing as many of these suffered from blown electrics or ended on the junk yard Top models from the 70s command high prices among audiophiles simply for nostalgic reasons see above Good transcription turntables like the SP10s or the big Denons offered without a plinth are still a reasonable deal at around 400 500 bucks as many audiophiles seem to shy away the work of builing an own plinth for these decks Right now the SP1OMk2 seems to be the audio bargain of all times when it comes to set up a top analog frontend The big prestige decks like the Nakamichis or the Goldmunds won t get cheaper too Many audiophiles recognized that today there isn t anything quite equal to these decks But if you really spend some time in the end you surely will find your dream They are still around us those wonderful DirectDrives The H And HOME AD Owning Museum Tech Talk Whys ee Sarah DirectDrive The Hows And Whys DirectDrive Owning a DD DirectDrive Museum DirectDrive Tech Talk DirectDrive Tonearms DirectDrive Museum Denon Denon founded in 1910 as a joint venture by Emile Berliner s Gramophone Company and Alexander Graham Bell s Columbia Gramophone Company the Japan Gramophone Company produced Japan s first shellac disc 78rpm records and record players In 19
26. d market you can get a good one quite cheap which makes it a nice table for beginners Sony PS 5520 Sony TTS 6000 The TTS 6000 was Sony s flagship in the mid 705 Derived from the 5520 it featured a different strobe and came complete with plinth and the S shaped PUA 237 10 tonearm Here it is mounted in a custom plinth capable of two arms Extremely rare machine too Sony TTS 8000 A sturdy robust very fine built machine with the same arm as the later PS X9 These decks are extremely rare outside of Japan uunmumueu Tr manauuceu cim Sony PS X9 The Hows And Whys Owning a DD Museum Tech Talk DirectDrive Museum Technics HOME DirectDrive The Hows National Technies is one of the And Whys pioneers in developing Direct DirectDrive Owninga Drive turntables This was the DD brand name under which the big japanese company Matsushita became a big player in the audio DirectDrive Teeh Talk business back in the 60s 1969 Technics introduced the first direct drive deck the Technics SP 10 Successfull as it was Technics developed a number of decks in the 70s that are SP FOMETI considered among the best Direct Drives ever built common sense the sonics of the quarz controlled models of the second half of the 70s are better than their ancestors Besides the famous SP Series which were all offered without a plinth there was also the SL series with some of them offered wit
27. de Combate ao C acirc ncer sW4 Home page of abcde88 www Geocities ws abcdefghignacioignacio It It 3 ordm Me DCIRFE2007 gt abcd bananal abcecg2 abcecg3 abcepakes abcfiddler abcheraldry abcinstrutorasenlaces abcmcfarren ABCD Associa o Bananalense de Combate s Drogas Entorpecentes index index Associa o Beneficente Cultural e Esportiva de Pais e Alunos do Karate de Eldorado do Sul Home page of abcfiddler www Geocities ws Abc of heraldry coats of arms and family crests ABC Instrutoras Enlaces pagina inicial Mathematica Cooking Mathematica Cooking
28. dized by the huge sales of their little mass market brothers Today those machines seem to be THE ticket for a glimpse of analog nirvana More about today s prices for differnet models the DirectDrive Museum How does it look Looking at those machines you clearly see the approach of a company to create a real statement model one that you will always associate with that company No player in that days looked like the other the designers wanted theit babies look unique and prestigous Rosewood and brushed aluminium were the ingredients and cost was obviously no object Build quality was also exceptional and these days noone dared to present a record player without a strobe Some word about plinths and tonearms If you want these machines sound as they can you need a dense and heavy plinth and a good decoupled stand Many of the turntables in that days were developed as a simple chassis which the user could place into a plinth of his taste Plinths offered by the companies looked good but in most cases they suffered from resonnances and spoiled the sound of the players Apparently plinths offered by Denon JVC and Sony suffered from this On the other hand having the possibility to make an own plinth means that you can somewhat tune the sound of your turntable for your own system and taste You can also get the looks you like Building your own plinth is covered here The same applies for tonearms which were mounted that days
29. e 70 s Others HOME The Hows And Owning a DD Museum Tech Talk Whys DirectDrive Tech Talk HOME DirectDrive The Hows And Whys DirectDrive Owning a DD DirectDrive Museum DirectDrive Tech Talk DirectDrive Tonearms This is such a good and classical motor control that it deserves to be covered in depth a little A DC generator integrated in the motor itself delivers a signal with a frequency proportional to the actual platter speed This signal then is converted with a frequency to voltage converter to deliver a speed proportional current This is then fed into the motor controller to rgulate the motor This loop alone assures quite a constant speed of the motor At the same time the signal of the DC generator described above is fed into another stage where its phase is compared with a signal that is won by a programmable frequency divider which is fed by a highly contant reference signal from a quarz oscillator The reference signal is quarz constant too The slightest differences in phase between both signals will then be compensated and fed to the motor along with the output of the speed control stage described above That way only a very small and practically constant phase difference between the position of the platter and the reference signal is not compensated by this phase locked loop Constant phase difference by the way means that platter speed is exactly equal to the quarz generated reference
30. e Korkmatte und darauf eine Linn Filzmatte Der Einsatz von harten Matten aus z B Metacrylat verbietet sich bei klingelnden Tellern von selber auf eine Gummimatte aufgelegt bringt s meist nicht mehr viel Eine andere M glichkeit besteht darin das Resonanzverhalten einers Tellers mit einer Glasmatte regelrecht zu b ndeln und dieses Resonanzspektrum dann mittels einer daraufgelegten Kork oder Filzmatte stark zu bed mpfen Spezielle dampfende Matten funktionieren mit den meisten Direktl ufern sehr gut und sind wenn auch teuer wirklich zu empfehlen Mit Erfolg auf allen Laufwerken ausprobiert hab ich die Record Interface Mat aus Holland eine leider schon lange nicht mehr erh ltliche Sandwichkonstruktion die auch von Herrn Van den Hul auf seinem SP 10 genutzt wird Ebenfalls gut gehen Ledermatten oder Filz Leder Konstruktionen Cabrio Ver deckstoff Die besten Ergebnisse erzielte ich mit der bei H Aschenbrenner erh ltlichen Verdier Matte eine Gummi Blei Konstruktion Urspr nglich von H Verdier nach einer Idee von H Shindo f r seine eigenen Laufwerke entwickelt leistet diese Matte auf vielen Direktl ufern erstaunliches Outsourcing Outsourcing ist ein radikaler Umbau des Plattenspielers bei der lediglich der Motor im eigentlichen Chassis verbleibt und s mtliche elektronischen Bausteine in gesonderte Geh use verlegt werden Hierdurch steigt meist die Laufruhe des Laufwerks teilweise enorm Zun chst sollte man d
31. e beider Materialien ist aber sehr teuer und f r den Privatmann kaum selber herstellbar Vorteile von MDF sind der geringe Preis und die leichte Bearbeitbarkeit Corian Corian ist ein Material da zur Herstellung von K chenarbeitsplatten dient Es handelt sich wie MDF um ein Komposit Material besitzt aber einen mehr oder weniger hohen Aluminiumanteil F r den Zargenbau kommt Corian mit hohem Aluminiumanteil gro e Flecken zum Einsatz Das akustische Ergebnis kann berzeugend sein F r meinen pers nlichen Geschmack klingen Corian Zargen aber oft berd mpft und leblos Nachteil ist das Finish Geschmackssache der hohe Preis und die Tatsache da Corian nur in sehr d nnen Dicken ange boten wird Birkensperrholz Das Standardmaterial zum Zargenbau Nicht billig aber akustisch ziemlich ideal leicht zu bearbeiten und leicht zu bekommen Die Optik kann mit Furnier Beize oder Lack leicht den eigenen Anforderungen angepa t werden Birkensperrholzzargen klingen tonal ziemlich neutral und lebendig Harth lzer wie Mahagoni Kirsche Ahorn Diese H lzer werden auch im Instrumentenbau verwendet Mahagoni klingt hier eher satter Ahorn brillanter Mit solchen H lzern kann man excellente Ergebnisse erzielen wenn einem das Resonanzverhalten der Klang des Laufwerks bekannt ist da man diesen mit Hilfe dieser H lzer in bestimmte Richtungen tunen kann Nachteil ist der sehr hohe Preis und die Tatsache da man diese H lzer schwer i
32. earings in a player system The first patent of a direct drive for record players goes back to 1929 it belonged to the suisse company Thorens which is known among audiophiled mostly for its belt driven players So almost 40 years had to pass until with the inventions of modern discrete regulation circuits it was finally possible to produce a direct driven record player of high quality With the first models the speed was regulated by reading the minute fluctuations of the platter with a tachometer and correcting the turning of the motor by comparing this signal with an electronic reference signal The drawback of this principle was that before correcting something a fluctuation already has to occur These effects may be more or less audible depending on the quality of the deck Soon after that Denon introduced a new method by reading a difference signal from a magnetic ring inside the platter and thus generating a correcting signal for the motor before any significant fluctuations in speed had occured Later japanese players included a phase locked loop PLL around the reference and the differential circuits That way the speed is corrected when a slight difference in phase of the two signals is detected with only a minute and constant phase difference between reference and tachometer signal left The tendency for trembling of the first generation direct drive turntables was almost completely eliminated that way and speed fluc
33. eichnet Dies dient als Mittelpunkt f r die Tonarmbohrung Hier sollten mind 50 mm Abstand zumn Laufwerk und zum Zargenrand eingehalten werden d h bei kurzen Armen wandert der Drehpunkt entsprechend nach vorne Bei manchen Laufwerken tun sich in Kombination mit kurzen Armen Probleme auf Einen SME Ausschnitt f r einen SME 3009 wird man mit einem Technics SP 10 kaum hinkriegen Bei den runden Denon s ist dies weit einfacher Nun wird mittels Runds ge oder F rstnerbohrer ein Loch mit c a 20 35mm je nach Tonarm in das oberste Brett gebohrt Das oberste Brett dient nunmehr als Schablone f r alle weiteren wobei man hier beachten sollte da das Tonarmloch bei allen weiteren Brettern nunmehr mind 80mm Durchmesser aufweisen sollte Im unteren Bereich ben tigen viele Laufwerke weniger Luft d h man kann und sollte den Laufwerkausschnitt je weiter man nach unten kommt verringern Jedoch ist bei Laufwerken die von unten verschraubt werden wie der Technics SP 10 darauf zu achten genug Platz um die Schrauben zu lassen um das Laufwerk auch mal wieder ausbauen zu k nnen Die letzten 1 oder 2 Bretter sollten bis auf die Tonarmbohrung massiv sein um weiteres Gewicht zu gewinnen Nun werden die Platten mit Holzleim zusammengeleimt die R nder plangehobelt und geschliffen und fertig ist das Werk zum Lackieren Beizen oder Furnieren Hier einer meiner SP 10 mit SME IV Die Zarge wurde einfach klar lackiert Unten ein weiterer SP 10
34. elves to be left without a cutout as that puts even more weight to your plinth but remember that you might need to remove them if you want to change your tonearm or the deck itself so don t glew them screw them The other shelves are glued together then after sanding the whole thing your plinth is ready for veneering or painting Here s one of my SP 10s ready with an SME IV Here you see another Technics SP 10 with SME 312 arm The satisfied owner of the deck sended me the photos after completing his work e Spikes Metal spikes under your plinth will make your deck play very precise open with fast transients but quite often have the drawback of sounding a little harsh The material on which the spikes rest should be dense and heavy do your own experiments here e Air Damping These feet are available for industrial purposes but they re not cheap 50 60 bucks per foot Sonically they are very good and available at RS Components Keep in mind that your taste matters here but avoid to place your turntable near the speakers or in room corners where room modes and resonances have their maximum Tuning There s nothing good in this world what a tweaker can t do better isn t it Of course that s true for Direct Drive decks too But don t forget to listen to the deck at least for 8 weeks or so to know the sound of your deck before you start tweaking as otherwise you cannot judge wether your t
35. ely seen on the 2nd hand market today This deck inspired M A Cotter for his famous Cotter B 1 turntable A magnetic head reads a signal imprinted in a tape under the platter This signal was then feeded in a Quartz controlled PLL circuit Take care that the magnetic ring inside the platter is in good condition You can check this quite easily by watching the strobe On a good one it virtually stands still if not hands off Apart of this the DP 6000 is build like a tank and virtually undestroyable Today its price goes from 500 bucks up to heaven A very good player if mounted in a decent plinth A near relative of the DP 6000 is the DP 7000 Pictured here with the venerable Grace G 714 tonearm In Japan you can get those units for very low bucks Its sonics and build quaklity is not comparable to the big ones covered above but a DP 3000 in good working order is still a very good deck Two names one deck 2000 was the deck DP 2500 the domestic package with plinth and arm as pictured here There was a DP 2550 slightly bigger plinth no arm and a DP 2800 marble plinth too The DP 2000 is a fine deck too This budget model has a different chassis than the more expensive ones You can easily distinguish them by the silver front plate and different knobs As it is more common seen on the used market it s considerably cheaper than a DP 6000 or DP 5000 It s sonics are not comparable to the big ones
36. en most of todays decks simply fail to have Sonically the SP 10 has a razor sharp precision an effortless authority stable imaging even with loud orchestra passages and astounding dynamics For me it s one of the best decks ever built and compared to its sonic qualities its price on the 2nd hand market is quite moderate at 400 Dollars up SP 10Mk2s are quite common even today as masses of them where used everywhere in professional and home audio There is also a professional version of this deck it goes by the name SP 10Mk2P which featured adjustable speeds Below you see the power supply SH 10EP and the combined regulator and phono preamp 5 100 which houses parts of the motor electronics Some SP 10s were modified by broadcasting stations mostly some kind of remote control was established Take care that this remote control comes with the deck A BBC version SP 10Mk2 without remote control will not start at all Technics SL 1000 This is the domestic version of the SP 10Mk2 comin with a not so bad plinth made out of obsidian SH10 B3 and SH 10B7 If you come across 51 1000 on the 2nd market you ll discover that unlike the naked SP 10Mk2 these decks will fetch very high prices around 1200 1500 Dollars The plinth and the tonearm EPA 100 do not justify these high prices sonically And finally here is the professional version of the SL 1000 the SL 1000P Technics SP 10 Mkl1I Now this is the ultimati
37. entical to the 948 with simpler electronics and no gimmics like push button back spinning but quite a pretty plinth at least compared to the other EMT s So if you re looking for an EMT with a minimum of WAF here it is Audio Electronics are quite good and work very well with the EMT TSD 15 cart so take care the active MC stage is on board There was a second version for Moving Magnet carts which is not that desirable Nowadays an EMT 938 changes his owner at around 1000 Dollars Not too bad if you consider the fully symetrical good sounding RIAA Phono amp on board Near relatives of the 938 are the Thorens TD 524 Thorens TP 16 tonearm and TD 738 Thorens TP 29 tonearm the same as the EMT 929 These models aimed at the professional market and offered features like remote control and pitching up to 25 HOME The Hows And Whys Owning a DD Museum Tech Talk DirectDrive The Hows And Whys DirectDrive Owning a DD DirectDrive Museum DirectDrive Tech Talk DirectDrive Tonearms DirectDrive Museum Goldmund Goldmund located Switzerland made some turntables in the 80s that redefined the state of the art All decks featured here have direct drive starting with the Goldmind Studio introduced 1984 decks featured motor driven linear arms developed by Pierre Lurne who later founded Audiomeca Goldmund decks featured some kind of acoustic suspension
38. er platter a very fast start up was possible The drawbacks of those decks were the countless moving parts and bearings which all added resonances and all had to be regularily serviced to guarantee the 24hrs a day performance needed in professional broadcast centers To optimize tracking records the engineers at Technics soo realized that this could only be achieved by reducing the numbers of moveable parts in a turntable This meant also reducing the number of parts to service and it also meant that the deck would cost less as all those parts at the end of the 605 were getting quite expensive Obviously engineers in Europe at that time had the same ideas as in 1968 Thorens Germany introduced their belt driven TD 125 Unlike its predecessor the famous TD 124 with combined belt idler drive the TD 125 was a much simpler machine with only 3 4 of the parts of the 124 The TD 125 was one of the first decks to incorporate an electronic regualtion for the motor to achieve maximal steady turning of the platter For professionals however the belt drive was of no use cause the startup time was way too high with the rubber belt slipping at the motor pulley The japanese had more radical ideas As strong slow turning DC Motors were already available and electronic regualtions getting cheaper almost every day they saw new possibilities If the motor shaft would be identical to the platter spindle ther would be only ONE moving part in the whole system which
39. er will run way too fast so this might turn out as some kind of bargain But again be very careful Optical condition Very often you can better the cosmetics of your deck by yourself With some marks though you have to decide by yourself whether you can live with that An EMT from a german broadcasting station was always well looked after technically by special service people but optically it might look horrible technically it will work like new If a wooden plinth is in bad condition quite often this does not matter at all if you can change it Most plinths are not of great use for listening to music and you should build your own anyway Tonearms Carts Quite often you ll get offered a complete record player coming with tonearm and cart If the tonearm is in good condition and if you like that tonearm you can add some money for it Most separate tonearms of the 70 s however will play in the range of hmmmm a Rega RB 300 some even worse sadly almost all tonearms supplied by the company that made the deck may fall under this category Keeping this in mind pay around 100 to 150 Dollars more for a o Audio Technica ATP Series Denon DA Series Lustre GST 801 SME 3009 52 Technics EPA 500 Pay considerably more for the following o Fidelity Research FR64s FR64fx o Grace GA704 714 a SAEC WE series o SME 3012 R o Technics EPA 100 To judge the state and quality of a tonearm or cart is nearly impossible if you do
40. gnetic bearing The armbase rests on a sledge which makes it possible to change arms very fast if you own more of these Luxman PD 444 Top of the line Lux form the end of the 705 Now this is a deck where you can mount your Fidelity Research FR66 or SME 3012 quite easily Typical for all Lux decks The plinth made out of brushed aluminium with rosewood sides The PD 444 is a fine deck maybe a little overpriced at around 1000 Dollars on the 2nd hand market Hows And Whys Owning a DD Museum Tech Talk DirectDrive Museum Micro Seiki HOME The Hows fine mechanical company Japan founded And Whys DireetDrive Ownins 1961 and specialized itself in building DD turntables and tonearms in the early 70s When introduced in 1976 the Micro DDX i 1000 soon became the darling of all HiFi DireerDrive Talk journalists with its unique possibility to DirectDrive Tonearms mount up to three tonearms that made comparing arms and carts a breeze In the beginning of the 80s Micro buried their Direct Drives but continued to produce monstrous Belt Drive decks like the RX 5000 DirectDrive Museum Micro MR 711 Micro DD 100 Introduced in 1976 the DD 100 was the first quartz controlled Micro Seiki Build quality of these decks is simply exceptional as with most top of the line Micros These decks are rarely seen in Europe or the USA but are quite of
41. heavy wooden plinth and quite massive platters This is the DDL 100 Here s a DDL 150 with Fidelity Research tonearm Micro DDX 1500 The DDX 1500 was introduced in 1985 It is a very heavy deck with a metal plinth based on the belt driven RX 1500 The platter of the DDX 1500 is cast aluminium not a machined platter as on the RX 1500 The DDX 1500 was the last Direct Drive deck from Micro Seiki and thus marked the end of an era Nowadays if you get one be prepared to spend at least 1000 bucks for this machine as these are real rare birds now Sonically keep in mind that this model was quite an Entry level RX1500 and hardly any improvement against a DDX DQX 1000 HOME The Hows And Whys Owning a DD Museum Tech Talk 202 303 505 505 5055 AUDIO TECHNICA 100511 AUDIO CRAFT AC 300C 300A 5401 FR FRANKIN 54 14 G 545F 707 840F 840FB 940 S4SSILVER DENON DA 303 305 307 309 40 Pam SAEC WE 30BN 308SX 407 23 317 TECHNICS 99 1215 1211 1015 1011 VICTOR UA 5045 LMF 1 2 EMT 929 ORTOFON RMG 212 SMG 2 2MK 11 AX 2G 3009 SII 3009 Sill 3010R MICRO MA SOSL SOSLS SOSLX AUDIO CRAFT AC 400C 400A 400MK 11 GRACE G S65F 850F 850FB 960 AX 3G DENON 1 DA 02 304 308 EMT 19 RMG 309 RF297 AUDIO CRAFT MAK2Q2 25 AUDIO TECHNICA AT 1501 11 1501 4000 m te
42. her or combined felt leather the same material is used for the roofs of convertibles all worked good The dutch Record Interface Mat a sandwich construction is used by Mr Van den Hul on his SP10 the expensive Verdier mat made out of rubber and lead works wonders if your motor can stand the extra weight With most other mats you may find the stock rubber mat working better Outsourcing stripping the deck Outsourcing is a more radical tweak Outsourcing means that you put all electronics out of the deck into an external housing The result will be that depending on the deck of course it will run much smoother Start with the power supply if it s not external yet and you reach app 50 of the potential of outsourcing Most quarzes work much better without the magnetic fields and mechanical vibrations of the power supply If your turntable has a brake and if you don t need it away with it it causes resonances too Stripping the deck you can go that far that only the motor and the platter is left Stripping a deck works by minimizing electrical mechanical and magnetical influences caused by the electronics of your deck Removing the often ringing chassis however means that you need to built a new switching panel Often you will find that the whole work is not worth the sonic benefits but some people swear by it Mr Akito Kaneta seemed to dislike the original chassis of his SP 10 too You can see a Kaneta SP 10 on the Kaneta Page
43. his is true for the top of the line models covered on this site forget about most cheaper direct drives of the same era that flooded the mass market during the 70s and 80s In the DirectDrive Museum you will find some recommendable models A good direct drive machine delivers rock steady positions of instruments precise timing high dynamics and razor sharp transients Classical music has as much authority and weight like with the best high mass belt driven turntables but without their timing problems in the lower registers The music lover who is ahead of spectacular effects should give a Technics SP 10Mkll an EMT 948 or a Denon DP 6000 a listen he might well be surprised What does it cost A good Direct Drive machine is very expensive to build 5 10 used to cost around 1000 Dollars in the 70 s today that might be ten times as much The EMT 948 pictured above carried a price tag of 6000 Dollars in the end of the 70 s Those machines were introduced to the stunning public during the heyday of japanese audio The yen was low production costs were no object and lots of well eduacated engineers were just waiting to put their expertise and creativity into a new analog statement product At the end of the 70 s almost every japanese audio company had one or two of those flagships in their program mostly for prestige and image reasons Obviously these battleships were calculated in a manner that they were subzi
44. hout a tonearm which will make for quite a good deck even today DirectDrive Museum Technics SP 10 Mk1 This is the grandfather of all Direct Drive turntables the famous Technics 5 10 1 Rarely seen today its sonics do not match those of the later models in fact ist sonics are inferior to a Thorens TD 125 The motor was controlled by reading fluctuations of speed of the platter by a tachometer and comparing that signal to an electronic reference signal So the speed has to drift a little before it is regulated again These effects are audible with critical program like classical music or piano concerts The power supply unlike the later SP 10MkII is located in the deck and the motor has not the ultimate torque of the later models Rarely seen the Technics SP 10Mk2 is more interesting for collectors than for audiophiles The price for a good model may even reach 400 to 500 dollars Technics SP 10 Mk2 This is the legend with thousands of them on daily duty in radio stations recording studios clubs and audiophiles The PLL Quarz controlled motor regulation works almost perfect the motor has unbelievable torque which won t even slow down when 500 carts with 2 0ponds each would be put on the platter The electronics of the SP 10Mk2 consists of impressible 108 transistors 14 ICs and 32 diodes and condensators Construction and build quality was almost perfect and achieved such a steady turning of the platter that ev
45. ichkeit bot bis zu 3 Tonarme auf einem Laufwerk zu montieren Micro Nakamichi war ein japanischer Hersteller der in den und 80ern DER Hersteller f r hochwertige Kassettendecks war Weniger bekannt sind die innovativen Laufwerke von Nakamichi die in vielen Dingen alles was vorher oder nachher angeboten wurde in den Schatten stellte Nakamichi Japanischer Hersteller von Gro serien HiFi der in den 70ern jedoch auch einige Prestige Produkte wie den legend ren PS X9 anbot Technics Andere DirectDrive Warum Der erste Hersteller der Laufwerke mit Direktantrieb in Gro serie fertigte Der SP 10 war in zahllosen Rundfunkstationen in der ganzen Welt im Einsatz 5 JVC Victor Pioneer und andere GLASS japanische Hersteller 9 von Audio Equipment stellten Ende der 70er alle Boliden vor von denen einige hier verewigt sind DirectDrive DirectDrive DirectDrive Praxis Museum KnowHow Ein im Antriebsmotor selbst integrierter Wechselspannungsgenerator liefert als Istsignalgeber ein Signal mit stren drehzahlproportionaler Frequenz Aus diesem Signal wird in der Drehzahlregelstufe mit Hilfe eines Frequenz Spannungsumsetzers eine drehzahlproportionale Steuerspannung gewonnen Diese Steuerspannung wird der Motorstufe zugef hrt und bestimmt so den Motorstrom Schon diese Regelschleife stellt eine weitgehend konstante Drehzahl sicher Gle
46. ichzeitig wird aber das Signal des im Motor integrierten Istsignalgebers einer Phasenvergleichsstufe zugef hrt Dort wird es mit einem Signal verglichen welches ber einen programmierbaren Frequenzteiler aus dem hochkonstanten Ausgangssignal eines Quartzoszillators abgeleitet wird Die Referenzspannung weist deshalb ebenfalls Quartzkonstanz auf Schon die geringste Phasenverschiebung zwischen Istsignalfrequenz und Referenzfrequenz erzeugt in der Phasenvergleichsstufe eine Kompensationsgr e Diese Phasenkompensation gelangt zusammen mit dem Ausgangssignal der Drehzahlregelstufe zur Motorsteuerstufe Auf ndiese Weise bleibt als einzige Regeldifferenz dieser phasenstarr verriegelten Regelschleife PLL Phase Locked Loop ein geringer aber praktisch konstanter Phasenwinkel zwischen Plattentellerposition und quartzkonstantem Referenzsignal brig ERin konstanter Phasenwinkel bedeutet in diesem Zusammenhang aber nichts anderes als da die Drehzahl des Plattentellers mit der Referenzfrequenz exakt bereinstimmt Die Drehzahl des Plattentellers selbst h ngt damit entsprechend der beschriebenen Arbeitsweise der Regelschaltung nur von dem Referenzsignal selbst ab Damit diese Referenzfrequenz von allen sch dlichen Einfl ssen unabh ngig konstant bleibt wird f r ihre Erzeugung ein QWuartzoszillator verwendet dessen Frequenz weder von Netzfrequenz und Netzspannung noch von Temperaturschwankungen nennenswert beeinflusst wird Das Ausgangss
47. ignal des Referenzoszillators durchl uft einen Frequenzteiler der die Frequenz auf einen der gew nschten Plattentellerdrehzahl entsprechenden Wert herunterteilt So bleibt die hohe Frequenzkonstanz des Quartzsignals auch f r das Referenzsignal erhalten Der Frequenzteiler des SP 10 ist programmierbar also eine Teilerschaltung deren Teilerfaktor durch an seinen Programmieranschl ssen anliegende digitale Informationen ver ndert werden kann 3 solcher Informationen sind in einem Festwertspeicher vorhanden und k nnen mit dem am Bedienfeld angebrachten Tasten angew hlt und dem Frequenzteiler zugef hrt werden Die Informationen sind so gew hlt Surprise surprise da der Frequenzteiler die den Tellergeschwindigkeiten 33 33 45 oder 78 U min entsprechende Referenzfrequenz liefert Dank der Motorregelschaltung h lt der Plattenspieler dann die gew hlte Geschwindigkeit mit h chster Genauigkeit ein Auch beim SP 10 kann die Plattenteller Drehzahl mit Hilfe eines Stroboskops optisch berwacht werden Das Stroboskop wird nicht wie sonst blich mit der Frequenz des Lichtnetzes sondern ebenfalls mit dem quartzgenauem Referenzsignal angesteuert Eine weitere geeignete Teilerschaltung arbeitet dieses Signal so auf da sich in Verbindung mit dem auf den Plattenteller angebrachten 190 Stroboskopstreifen immer ein stehendes Bild ergibt So ben tigt man zur Kontrolle der korrekten Geschwindigkeit nur einen Stroboskopring so da
48. it t eines Rega RB 300 bei herstellerseitigen Tonarmen oft nicht einmal das Bis zu 200 Euro Aufpreis gegen ber einem nackten Laufwerk sind bei gutem Zustand f r folgende Tonarme realistisch o Audio Technica ATP Serie o Denon DA Serie o Lustre GST 801 SAEC WE Serie o SME 3009 52 o Technics EPA 500 Etwas mehr Aufpreis ist f r folgende Arme realistisch deren Performance liegt in etwa auf Linn Ittik Niveau o Fidelity Research FR64s FR64fx o Grace GA704 GA714 o SME 3012 R o Technics EPA 100 Den Zustand eines Tonarms oder Tonabnehmer zu beurteilen ist bei unbekannten Ger ten fast unm glich Tonarmlager kann man berpr fen in dem man den Tonarm ausbalanciert und die Horizontalbewegung mit kleinen Papierschnipseln die aufs Headshell plaziert werden checkt Der Tonarm mu reagieren In der Vertikalrichtung mu sich der Tonarm schon durch leichtes Anpusten bewegen F r Tonabnehmer gilt da der Nadeltr ger eines Tonabnehmers nach 4 5 Jahren unabh ngig vom Zustand der Nadel ausgetauscht werden mu da der D mpfungsgummi in dieser Zeit meist por s geworden ist Bei Moving Coil Systemen und nur um die sollte es eigentlich gehen ist dieser Austausch sehr kostspielig mehr als 350 Euro und rentiert sich daher meist nicht Eine Ausnahme stellen hier hier alle EMT Modelle dar hier ist es nicht sinnvoll Tonarme anderer Hersteller zu kombinieren Pflege Die Pflege bei guten Direktl ufern reduziert sich a
49. ke the countless 1210 clones from Omnitronics Vestax etc In domestic high end audio the Direct Drive at that time apart from the Goldmund decks was simply dead The renaissance of direct drive decks at home began when audiomaniacs started to buy these decks from radio stations and privates who switched to CD discovering the sonic excellence of some of these decks when combined with a decent plint and a modern arm Another big group rediscovering direct drive decks were the then forty something age group These people were young when these decks were new and many of them harbored dreams of owning one since their youth These were the machines they couldn t afford then but at the end of the 905 they were ready and able to plunk down the original retail price for a Micro DQX 1000 Easily available through the Internet lots of Denons Technics and others made their way to their new homes DirectDrive Today The days whe you could buy a Denon DP 2000 for 100 bucks are dfinitely gone Most radio stations have stored their whole analog archive on CD s or computers and had long sold their last turntables During the big throw out wave in the 90s it wasn t unusual to find an EMT 948 deck for around 500 bucks with Technics SP10s were sold at almost every corner for 200 bucks or so Nowadays the prices are rising For many good decks you must expect to pay as much as the prics when new EMTs can be seen as sort of an alternative to sto
50. ks with a quatz locked pll regulation Platter and chassis had a tendency to ring like a bell so this is a candidate for stripping of the chassis Even without that it s a very good deck in one range with the Technics SP 10 Its build quality is stunning and most of these machines will last a lifetime On the 2nd hand market a good one might sell for around 500 Dollars Factory plinth was the same as for the DP 75 it had the name DK 110 but as with all Denons there are better ways to mount your deck This one really deserves this As you see the tape head with later Denons is located at the right side of the deck 75 One of the last classic transcription decks The DP 75M came along with tonearm that looked good but sounded not as good as it looked The DP 75 is more or less the same as a DP 80 not that bullet proof but its build quality will make this deck last very long too Like the DP 80 the DP 75 could be ordered with the DK 110 plinth SAEC made very good plinth for the DP 75 DP 80 too but it s very rare and expensive The DP 75 usually is cheaper than the DP 80 Denon DN 308 a 9 aas 9 5 Beside the popular DP series there existed another branch of Denon turntables made entirely for the professional market the DN series Pictured above is a DN 308F Few of these decks were built and even fewer are seen on the used market outside of Japan These were true transcription turntables
51. laboratories The golden age of audio had risen those were exciting times with many new models being developed and announced in regular intervals At the end of the 70s there really was a sort of race between the mayor players introducing ever bigger better and more sophisticated turntables sometimes at very high prices To understand this you have to know that the Compact Disc at that time was close before introducing almost every audiophile had a turntable already so the mid class market was set Apart from these reasons the analog flagships of that time were image and prestige products of the japanese companies often subzidized by their mass market brothers Machines like the Sony PS X9 the Trio Kenwood LO7D the Technics SP 10MkII or the Denon DP 100 were built in a cost no object attitude that never again arises out of Japan The best materials excellent Build quality oversizing of all parts and innovative ideas were the characteristical ingredients of the top decks at that time Those machines marked the end of an evolutionary process with non measurable Wow amp Flutter or noise specifications and they had a sonic quality that even by nowadays standards is state of the art But 1982 the CD finally arrived and it was the beginning of the end for those machines All japanese companies concentrated their engineering efforts towards digital Production costs had risen and the Yen was standing higher making export of a
52. ll play a whole lifetime The H A HOME Cows And Owning a DD Museum Tech Talk CET Whys Seren user DirectDrive The Hows And Whys DirectDrive Owning a DD DirectDrive DirectDrive Museum Tech Talk DirectDrive Tonearms DirectDrive Owning A DirectDrive Nowadays the only way to get a direct drive turntable is buying it second hand Most of the machines now are 20 to 30 years old Some of them were well used units doing 24hrs a day duty at radio stations With the compact disc arrival in the 80 s many of these players lost their job and ended in clubs or on the junk yard So today it s getting more and more difficult to find a good model and make it run really good Buying Service Building a plinth DirectDrive like Akito Kaneta Setup Tuning Spare Parts Buying Where do you get such a machine 15 years ago it was no big deal buying a Technics an EMT or a Denon from your local pro audio shop or radio station In the 80s almost every record studio had some direct drive player around with most of them sold cheap in the 90 s Most of my machines were bought that way Enter the 21st century some machines are really getting hard to find some have actually become very rare at least here in Europe or the US Of course you can try to find your dream on the WWW like at EBay but keep in mind that most machines sold there haven t got better during the years s
53. mit einem SME 312 Arm in einer nach dieser Anleitung gebauten Zarge Das Foto hat mir der zufriedene Besitzer freundlicherweise naach dem Bau zugesandt Kaneta Seite zwischen Dynamik und ausgewogener Tonalit t Der Boden auf dem die Holzcones stehen beeinflu t mit seinem Resonanzverhalten Masse Material die Musikwiedergabe Spikes Gibt es in hunderten von Ausfertigungen meist aus Metall Rhythmisch schnelles anspringendes stabiles Klangbild aber Gefahr von tonalen H rten Die Performance ist hier auch abh ngig davon auf welchem Unter grund die Spikes stehen Luftd mpfer Gibt es f r den Industriebedarf sie sind nicht billig Diese D mpfer haben hervorragende akustische Eigenschaften und d mpfen wirkungsvoll Trittschall Sie sind erh ltlich bei RS Components kosten aber pro St ck gut und gerne 50 60 Euro Insgesamt entscheidet hier ma geblich der pers nliche Geschmack und die h uslichen M glichkeiten Achten sollte man noch darauf da Laufwerke nicht in der N he von Lautsprechern oder in Raumecken gestellt werden da hier Raumresonanzen ihr Maximum erreichen und bei hohen Lautst rken durchaus ein Laufwerk zum Schwingen bringen k nnen Tuning Es gibt auf dieser Welt nichts gutes was man nicht noch besser machen kann das gilt auch und gerade f r Direktl ufer Jedoch sollte man vor etwaigen Tuning Ma nahmen erstmal 8 Wochen zufrieden Musik h ren bis sich das Klangbild auch im Hirn eingebr
54. n and resonances these arms have a lot of advantages against their conventional brothers Unipivot bearings last longer and these arms tend to perform more independent from the pickup and turntable you use A disadvantage is the floppy feeling which makes it hard to cue to a certain song The sound of unipivots is best described as airy effortless with wide stage and very good reproduction of low level signals When it comes to stability and bass reproduction the finest conventional arms sometimes have to offer a bit more Arms with two conventional bearings The introduction of the Linn Ittok in the late 70s set a new definition how a tonearm should look like A massive one piece arm tube in connection with very precise ball bearings was considered state of the art SME answered with the SME V and Rega put out their RB 300 All of these arms sound very dynamic with good precision rhythm and attack These arms rock On the other hand all these arms tend to suffer from resonances in the upper midrange and sometimes lack a bit of air and sound overly dry In between both are the old faithful SME 3009 3012 arms with their knife bearings which combine many of the advantages of the unipivots with that of conventional arms Audiocraft AC300Mk2 Plug in arm stem AC 300N ee gt bi is not easy as the VTA seems to be affected by the amount of damping you put to the arm Fidelity Research FR64s Founded by
55. n den gew nschten Ma en bekommt Marmor Stein Kunnststein Naturstein d mpft nur minimal besitzt aber eine hohe Dichte und ein hohes Gewicht Mir gef llt der Klang von Natursteinzargen nicht Eine Natursteinzarge kann man sich nur vom Steinmetz anfertigen lassen Kunststein und Schiefer amorphe Struktur d mpfen etwas mehr sind aber auch nicht so mein Fall Beispielhaft sei hier kurz der Bau einer Holzzarge beschrieben Am besten l t man sich mind 20 mm dicke Bretter im Baumarkt im gew nschten Ma zuschneiden Normalerweise wird sich die Gesamtdicke der Zarge an der H he des entsprechenden Laufwerks orientieren also etwa 8 12cm dick sein Entsprechend viele Bretter ben tigt man H her und damit schwerer ist bei Direktl ufern selten verkehrt Die Breite und Tiefe der Zarge ist abh ngig vom Laufwerk klar und dem verwendeten Tonarm 9 10 12 Arme bzw kann man auch gleich Montagem glichkeiten f r mehrere Arme vorsehen falls das gew nscht ist Um den Drehmittelpunkt des Tonarms sollte man ein Loch mit 8cm Durchmesser kalkulieren um den Tonarm bequem von unten festschrauben zu k nnen Zus tzlich sollte man noch einen Rand zu allen Ausschnitten von mind 30 mm Breite vorsehen Das oberste Brett erh lt nun den Ausschnitt f r das Laufwerk Dies erfolgt nach Anzeichnen entsprechend einer Schablone mit der Stichs ge Danach wird das Laufwerk provisorisch eingesetzt und der Abstand Tellerspindel Armdrehpunkt angez
56. n t know the thing Toneam bearings can be checked by balancing the arm and putting little paper pieces on the headshell vertical movement or very softly blowin from the side horizontal movement In both cases the arm should move Check whether there s a point when the bearing seems to stick too Even with all that done you never can be sure For carts Even if the needle looks like new keep in mind that after 4 5 years the rubber sorrounding of the needle has dried or is gone With Moving Coil carts an MM cart you can junk anyway that means repairing it for around 350 to 500 Dollars If it s not a fancy Koetsu forget about it BTW EMTs are a different animal It makes no sense in putting up a different arm or cart on these Consider that when you buy an EMT Service Service for most Direct Drive decks is no big deal at all 3 or 4 drops of oil a year read the manual for the main bearing and an occasional cleanup is enough Forget about cleaning the main bearing If you don t have a service manual you really should know what you re doing Keep in mind that main bearing means motor shaft and think about it for 5 minutes Most of the time the risk to damage the bearing is bigger than the possible positive result EMT main bearings for example require no service at all Building a plinth A good plinth for your deck is a must it should be dense heavy so it will damp the deck s resonances Back in the 70s few cared about that s
57. n und Bilder von hier nicht abgebildeten Plattenspielern wurde ich mich freuen Mailen Sie mir DirectDrive DirectDrive DirectDrive HOME DirectDrive Warum DirectDrive Praxis SEULS pcc Museum KnowHow Wie sieht s aus Zargen Schwaechen Das Prinzip Ende der 60er Jahre kamen japanische Ingenieure bei National Technics zu dem Ergebnis da f r eine weitere Verbesserung der Schallplattenwiedergabe die Anzahl der Lager minimiert werden mu te Patentiert wurde der Direktantrieb f r Plattenspieler bereits 1929 Ironischerweise geh rte das Patent Thorens einer Firma die heute nahezu als Synonym f r Plattenspieler mit Riemenantrieb und Subchassis gilt Doch erst 40 Jahre sp ter mit der zunehmenden Verbreitung moderner Regelungselektronik war es m glich einen Direktantrieb hoher Qualit t zu realisieren Bei den ersten Modellen wurde durch den Vergleich eines Referenzsignals mit einem Tachometersignal ein Differenzsignal erzeugt welches f r die Motorsteuerung heran gezogen wurde Nachteil dieser Art der Regelung war da diese letztendlich erst aktiv wurde wenn bereits eine Drehzahlabweichung stattgefunden hatte Diese Effekte sind h rbar bei schweren Teller weniger bei leichten Tellern oft deutlich Andere Hersteller wie Denon verwendete zur Abtastung des Differenzsignals Magnetk pfe die einen Magnetring innerhalb des Plattentellers abtasteten und daraus ein Differenzsignal f r die Steuerung generie
58. ng Mesra v 2 001 ABAP Consultant Certification index The coolest videos on the web by BARAJAS A Barca dos Casti os The Barking Dog Barracouta index Yahoo GeoCities abatch02 s Home Page ABA T E Campground and Party Home Page index index ABATE of Ohio Inc Region Zero N E Ohio Arnold s Home Page ALBERTO BECERRA ACCO ABBA Br Abaco Tienda Virtual Compra en L nea tus productos favoritos Gary Kirchherr s Web site ABBA Index of abbastilllives abberleyvillagehall abbertonroh abbesssunfur abbeyfealekarateclub abbeygrounds abbeysimaginethat AbbottFamilyCharters abbshn abby valenzuela abbyeddey abbye love abbyhwan abbypetrik1901 abbyss69 abc physics abc0919912213 abc183ar abc7282002 abc9250 ata abcbulletin abccaldeira abccbauru abcde39143047 abcde88 Abberley Village Hall 2009 WEB SITE still CLOSED DOWN by committee but the hall is still open Roll of Honour Homepage Abbeyfeale Shotokan Karate Club index page Abbey s Imagine That Abbott s Family Charters Welcome To Currie s Abby Valenzuela s Site Yahoo GeoCities Sakura Web Page Abby s Old Home Page Car Insurance Lawn Oak PUK puk PUK Home page of abc physics www Geocities ws wiJ Yahoo GeoCities w abc0919912213 s D portal Index of abc7282002 U Associa o Brasileira de Capoeira Angola Liberdade Alpha Beta Club Bulletin index ABCC Associa ccedil atilde o Bauruense
59. o beware Prices for those machines quite often have risen like a rocket old EMT s Denon s or Technics command huge prices now When buying such a machine take care of the following e Is it complete does everything work If parts are missing today it s almost impossible to get spare parts Parts like strobe lights spindles special nuts and bolts lights and switches are sometimes very hard to find Check out all lights and knobs work and do what they supposed to do Keep in mind that even getting a manual or a service manual for some players is a major challenge Does the platter move horizontally Can you move the spindle If the platter moves horizontally or even excentrically keep your hands off The main bearing is gone and in most cases there is absolutely no way for repairing it Do you hear wow or flutter Does it run too fast slow Wow and flutter is simply not existent on a good direct drive deck If nonetheless you detect wow and flutter or speed fluctuations the motor or motor regualtion has faded away Again spare parts for hall generators or quarz regulations are very hard to get hold of these days On some JVC s and almost all Denon s the difference signal is generated by reading a magnetic ring inside the platter If there is something wrong with this magnetic ring and quite often it is indeed you have no chance to repair the unit Sometimes though only the magnetic head is disaligned the effect is that the platt
60. o most plinths from that time may look good but sonically they re a medium desaster But for most Denons Technics or Sony decks you can easily fix this by removing the motor from the original plinth and build a better one Take the original as a template for your own massive construction Materials for plinths are e MDF MDF plinths have their own sonic fingerprint as MDF tends to damp higher frequencies more than lower frequencies so quite often the result is kind of dull and closed in sounding MDF may give good results when combined with other materials like some sort of metal A MDF Alu sandwich combines the advantages of both materials but it s hard to work with and very expensive However MDF is quite cheap and easy to work with e Corian Corian is a material developed by Dupont France for kitchen benches It s a composite that comes in an almost granite looking surface and consists aluminium flakes The more aluminium bigger flakes is in corian the better for your plinth Sonically for many people corian seems to be the ticket For my taste plinths made out of Corian tend to sound a bit too laid back sometimes even a little lifeless Drawbacks are the finish not my taste high price and the fact that corian is only available in quite thin sheets Birch plywood Birch plywood is a standard material for building a good quite neutral sounding plinth It s not cheap but sonically quite ideal easy to work with and eas
61. o transport at reasonable prices Among the first was obviously National Technics with their SL 110 During the 70s the domestic audio market was flooded by Direct Drive japanese made decks causing big trouble for the then established european companies Make A Good Thing Better The first motor regualtions developed by Technics or Sony weren t bad but they had their problems By reading the minute fluctuations from the platter by a tachometer the motor turning a fluctuation had to occur before the motor turning was corrected The first generation of Direct Drive players had also some problems in genrating a clean reference signal for the regulation In germany EMT had to react on the introduction of the SP 10 and EMT did it in the usual no compromise manner 1974 the Plattenabspielmaschine 950 was introduced at a price of around 4000 Dollars EMT had built the ultimate transcription turntable built like a tank with new features like backwards spinning and very good ergonomics EMT managed to get back lost parts of the professional market The 950 and its little brother the 948 soon were used in broadcast studios all over the world EMT incorporated a new motor regulation by taking a Hall generator s signal as reference and thereby achieving a very clean reference almost independent of mains disturbances temperature or other outer influences The EMT regualtion was so good that they put just a tiny 200g platter on the table
62. omething wrong with the regulation circuit The SP10s regulation circuits consisted of 108 transistors 14 IC s and 32 diodes and condensators These are located on six circuit boards with four of them under the platter and two of them in the separate housing of the power supply Take a look at the motor and the main bearing of an SP10Mk2 Sooo many cables The H A HOME The Nis duo Owning a DD Museum Tech Talk Whys DirectDrive And Whys DirectDrive The Hows Owning a DD DirectDrive Museum DirectDrive Tech Talk DirectDrive Tonearms DirectDrive Tonarme Tonearms are some kind of divas It s difficult to find the right one for your pickup it s even more difficult to adjust them correctly and even after weeks you re never sure that you ve got it all right Contrary to pickups there have not been huge improvements or new developments in the field of tonearms for the last decade The last big improvements were made during the early 80s with the introduction of the Linn Ittok the SME V and the Fidelity Research arms Since then most new arms seem to be more a sort of refinement sometimes remarkable of the existing designs Here want to introduce some tonearms which personally know and own Please be aware that my remarks regarding the sound of these arms reflect MY personal taste and are based on MY pickups and system so don t take them for granted There
63. r like new machines reaching 3000 Dollars The sound of this deck is very good too Even with the quite mediocre 929 tonearm and the almost 30 years old electronics you really get what you d paid for As everything works together perfectly you should check that your 950 has the STX 21 MC transformer on board and use it with a TSD 15 Then forget about turntables and listen to the music EMT 948 Around 1979 the 948 was introduced as a little brother of the 950 It did not have allthe gimmics of the 950 but the electronics are almost the same The big difference of the 948 was its compact newly developed suspension less mass nonetheless around 50pds without plinth and a compact chassis which allowed the unit to be used in mobile studios and little rooms The suspension of the 948 is unique with a ring located at the bottom which worked against the torque of the strong motor Arm 929 Pickup TSD 15 and electronics are the same as with the EMT 950 Sonically its performance is comparable to its big brother so if you don t need the ultimate look of the 950 the 948 is the ticket at around 1500 Euros today As with all EMT s assure yourself that the STX 21 MC transformer is on board plug in a TSD 15 and be happy EMT s are obviously a tweaker s nightmare anything you ll do will spoil the deck EMT 938 Introduced at the end of the 70 s the little 938 is some kind of a cheaper domesticated 948 The suspension is almost id
64. r oder weniger ausgepr gte Resonanz Ein weiterer Vorteil eines gut gemachten Direktl ufers liegt in der erreichbaren Drehzahlkonstanz Die Reibung der Nadel in der Rille bremst bei starken Rillenmodulationen den Plattenteller Messungen der Zeitschrift Audio zeigten da nach der Abtastung eines 3kHz Bursts 4Hz fehlten Solche Effekte k nnen mit Motorregelungen nur dann schnell genug ausgeglichen werden wenn Antrieb und Teller m glichst verlustfrei miteinander gekoppelt sind Dies ist bei Riemenl ufern meist nicht der Fall Der Weg ber Erh hung der Tellermasse gen gend Schwungmasse bereitzustellen funktioniert leider genausowenig So tr ge das System abbremst so trage reagiert es leider auch auf eine etwaige Beschleunigung durch die Motorregelung W rden Sie lieber mit einem Porsche oder mit einem LKW auf einer Alpenstra e fahren Eine Ankopplung des Motors an einen schweren Plattenteller mittels Faden String ist vor diesem Hintergrund brigens besonders fragw rdig Selbst bei einer Platine Verdier Tellergewicht c a 25kg machen sich verschiedene Spannungen des Antriebsstrings bez glich Drehzahlkonstanz dramatisch bemerkbar Eine starre Ankopplung des Tellers an die Motoreinheit setzt bei Riemenl ufern ein m glichst unelastisches Material Tonband o voraus Dieses bertr gt aber nunmehr s mtliche Resonanzen des Motors auf den Teller Entscheidend f r das klangliche Gesamtergebnis ist somit die m glichs
65. r und Lager sind bei diesen Gro serienmodellen leider an der Tages ordnung Auf diese Modelle wird hier nicht weiter eingegangen Es exitieren kaum Direktl ufer mit gefedertem Subchassis Ein entkoppelnder Plattenspielertisch oder Wandhalter ist f r die meisten Modelle Pflicht F r die meisten Dreher auf dieser Site gibt es keinerlei Ersatzteile mehr Ein durchgebrannter Motor eines Denon bedeutet das sichere Ende dieses Drehers es sei denn man findet einen zweiten zum Ausschlachten Die Bauteile in den Regelungsplatinen sind heute nur noch schwer bis gar nicht aufzutreiben Serviceadressen gibt es noch f r EMT und Technics Aber keine Angst gerade die au erordentliche Robustheit vieler Modelle ist geradezu legend r Werden Sie sachgem behandelt halten Sie meist ein Leben lang s DirectDrive DirectDrive Direct Drive HOME DirectDrive Warum DirectDrive Praxis 7 Museum KnowHow Ist das Ger t komplett funktionieren alle Features Fehlen Teile am Ger t ist es heute meist nicht mehr m glich diese als Ersatzteile zu bekommen Dies betrifft Teile wie Stroboskopbeleuchtungen Tellerspindeln Schrauben Schalter und nat rlich auch Verschlei teile S mtliche Schalter und LED s am Ger t m ssen funktionieren Manuale und Servicemanuale sind meist auch nicht mehr erh ltlich Hat der Teller H henschlag Wenn der Plattenteller nur minimalsten H henschlag besitzt oder gar unrund l
66. reaching a start up time of just 0 2 seconds Nippon Columbia known in the professional world under the brand name Denon set their DP series against the EMTs and SP10s With their DP 5000 the difference signal was read by a tape head from a magnetic ring under the platter The FG servo controlled motor regulation was thus feeded with a correcting signal BEFORE any significant fluctuation of speed had even happened Other japanese companies introduced the PLL principle By putting the reference generator and the tachometer in a phase locked loop the turning of the motor was corrected when only a slight phase difference between the reference signal and the platter position occured This left just a very slight and more important almost constant phase difference between both signals The turning of the platter now just depended entirely on a clean reference signal and in the mid70s the japanese began to incoroporate quarz generators as the most precise devices in their decks Allthese 2nd generation decks are sonically much better then their fathers with some top decks of that time achieving a performance which even by nowadays standards may satisfy a critical audiophile The Heydays And The End At the end of the 70s the japanese audio industry was in a unique position They had gained control over the worldwide audio market the Yen was cheap and big numbers of well educated engineers brought one innovation after the other out of their
67. rten bevor berhaupt eine nennenswerte Abweichung von der Nenndrehzahl stattgefunden hatte Bei sp teren Modellen erfolgte die Regelung mittels einer zus tzlichen Phasenverriegelung PLL Phase Locked Loop mit einem Referenzsignal Eine solche Regelung spricht bereits an wenn zwischen der Drehposition des Plattentellers und dem Referenzsignal eine minimale Phasenabweichung auftritt zudem bleibt diese Phasenabweichung konstant Das gef rchtete Zittern duch dauerndes Nachregeln geh rte ein f r alle mal der Vergangenheit an Die Genauigkeit des Antriebs hing jetzt nur noch von der Genauigkeit des Referenzsignals ab Anstelle von Synthesizern und Hall Generatoren wurde Ende der 70er Jahre vermehrt Quartzregelungen eingef hrt womit das Referenzsignal quartzkonstant wurde Vorteile Die Vorteile des Direktantriebs liegen darin da das gesamte System nur ein einziges bewegliches Teil der auf gemeinsamer Achse montierte Gleichstrom Langsaml ufer mit f r die Laufruhe g nstigem gro em Tr gheitsmoment aufweist Zudem rotiert dieses Teil sehr langsam und besitzt daher eine Resonanzfrequenz von c a 0 5 Hz im Gegensatz zu den 50Hz mit denen der Motor eines Riemenl ufers resoniert Im Gegensatz zu Riemen oder Reibradantrieb sind keinerlei mechanische Zwischenglieder f r Drehmomentwandlung erforderlich die mit ihren Lagertoleranzen und Eigenresonanzen den Abtast vorgang st ren k nnen Hier besitzt jedes Teil eine eigene meh
68. s Electronics There are several possibilities to tweak the electronics in your deck Disconnecting the strobe circuit from the motor regulation is a common tweak for the SP 10 You can also star earth all boards or build up a complete new regulation But the results here are not comparable to the others described above e he mains With some of the older DirectDrive turntables the mains turn out to be the enemy number one Most early Servo Circuits depend on quite a constant and clean mains voltage Start by using a good shielded mains cable and try out mains filters Decks like the Sony 2250 pictured above will thank you by really playing in another league Spare Parts An EMT Guru e Everything for EMT New ones used ones parts etc The same with a profi in their name e Everything for a Technics SP 10 new ones used ones modifications parts The Hows And Whys Owning a DD Museum Tech Talk DirectDrive Museum HOME DirectDrive The Hows_ A short history And Whys about the DirectDrive Owning a evolution of DD History Direct Drive DirectDrive Museum m ius ds DirectDrive Tech Talk DirectDrive Tonearms Denon ist one of the oldest and profoundest japanese suppliers of professional Audio Equipment Turntables like D the DP 5000 DP enon 6000 or DP 100 were originally built for professional broadcasting studios but in the 70 s HiFi enthusiasts could ea
69. s nothing more subjective than your favourite toneam Adjustment Cables Principle Audiocraft AC 300 Fidelity Research FR64s Fidelity Research FR64fx Grace 707 Grace 714 SAEC WE308 SME 3009 3012 SME IV V Adjustment Is it important It is indeed It is so important that a perfectly adjusted cheap arm will outperform any poor adjusted state of the art tonearm There is plenty of info around and bear in mind that the most important thing while doing your adjustments is Keep cool and let your ears decide Cables The cable from the arm to your preamp is the most sensitive cable inside your audio system Think of the small signals of Moving coils don t want to join the endless discussions about which is the best cable but would like to point out that channel imbalances caused by poor connections or dirty pins or HF distortion caused by AC cables wound round your tonearm cable are really not necessary In my opinion care should be taken for the rca plugs which should be cleaned periodically With older arms change the cable and use one with good plugs Neutrik Changing of the cables inside the armtube is not a job for the faint hearted You might destroy the bearings of the arm and you should leave that job to one who has done it successfully already Principle Beside linear arms like the Eminent which I do not know well enough most tonearms work after two principles Unipivots Almost free of frictio
70. ses Prinzips Arme mit spearaten Lagern f r die Horizontal und Vertikalbewegung Die verbreitetere Bauform Mit Erscheinen des Linn Ittok in den 80ern wurde der Drehtonarm sozusagen neu definiert Ein massives stabiles Armrohr in Verbindung mit exterm pr zisen Kugellagern galt von nun als State Of The Art SME antwortete mit dem V Rega mit dem RB 300 diesen Armen ist ein tiefreichender kontrollierter Bass gute Grobdynamik und schnelle rhythmisch pr zise Wiedergabe zu eigen Leider geht dies einher mit mehr oder weniger ausgepr gten Resonanzen im Mittel und Hochtonbereich worunter die Wiedergabe Web Site abaco tienda virtual abad abadchoice abadiametal abailarina abalarweb abalcus ABALGARVE aball1000 aban abancay2 abandonwaresuk abangcathedrale abangmesra abapr3sys abapred abarajas2003 abarburz abarcadoscasticos abarkingdog abarracouta abarrau3 abatch02 abatecamp abatedist12 abateofgt abatezero abatiste aba_losdeizcalli abbabr2 abbacolibreria abbafan abbamusyc abbastilllives Title ABACO TIENDA VIRTUAL Home page of abad www Geocities ws Abad a Heavy Metal Java Scrip Caixa de Alerta 2 Documento sin t iacute tulo Photography London ASSOCIA O DE BASQUETEBOL DO ALGARVE Home page of www Geocities ws Abancay Amistad Web Ciudad de ABANCAY Abandonwaresuk games games games Selamat Datang Ke Laman Web Aba
71. seum Tech Talk DirectDrive Tonearms DirectDrive Museum Sony Today when you hear of the name Sony you think of walkmans play stations and mediocre mid fi stuff In the glorious 70s however Sony was a major player in the audio game Or as a quote from a Sony brochure from 1971 tells you We make aggregates and systems for those who are willing to put a reasonable amount of professionalism into their hobby Sony early discovered the Direct Drive Around 1970 71 Sony put out the 2250 and the 5520 as a direct answer to National Technics SP 10 These were professional players without a plinth Later Sony concentrated more on the mass market but always had some kind of prestige top of the line deck in its program The venerable PS X9 was the king of them the japanese answer to the EMT decks Its introduction in 1978 however was too late to conquer the professional market Sony 2250 2251 This was Sony s direct answer to the SP 10 Introduced just a few months later in 1970 its construction wasn t as heavy and bullet proof solid as the SP 10 s but nevertheless many 2250s made their way to radio stations clubs or as a reference player in recording studios The servo regulation of the 2250 might tend to drift a little if you suffer from dirty mains You should always use a shielded mains cable and even a mains filter to put out the whole potential a 2250 is capable of Nowadays only few 2250 are around on the 2nd han
72. signal That said you see that platter speed almost entirely dependeds from the reference signal itself To keep this as constant as possible a quarz oscillator is used which is completely independent of mains current mains frequency or temperature changes The output of this oscillator is fed to a frequency divider which divides this frequency down according to the speed of the platter So the reference signal has almost constant frequency This frequency divider is programmable the factor of the divider can be changed by digital informations fed into its programmable sockets Three digital informations representing 33 3 45 78 rpm are stored in a rom They are selected by the speed selector switch and then fed to the frequency divider circuit Thanks of these advanced control circuits the player keeps platter speed almost constant The SP 10Mk2 also features a strobe The strobe of the 5 10 2 is not fed by the mains as usual but by the quarz constant reference current Another divider changes the signal in a way that together with the 190 strobe stripes underneath the platter the strobe always seems to stand still The advantage is that you need only one strobe ring for all speeds and the user can t mix them up Dirty mains which usually disturb the strobe are neglectable too With a system like the SPLOMk2 platter speed is far more constant than the mains current If you see the strobe of an 5 10 2 move than there IS s
73. sily buy one too Goldmund Trio Kenwood famous L 07D in Luxman EMT this german company was specialized in professional audio gear Their transcription turntables covered here became broadcast standard during the 70 s and the 80 s Swiss company non which produced some stunning machines that set new standards for High End turntables both sonically and monetary Japanese company which introduced the the late 70 s one of the best built turntable ever Japanese High End Audio company which made some beautiful machines in the 70 Micro Seiki was a japanese company which was specialized in making turntables Their most famous product was the venerable DQX 1000 on which you could put up to three tonearms Micro Nakamichi was a japanese company which in the 70s and 80s made some absolutely stunning Nakamichi turntables In some aspects the level of the ingenious mechanics of these machines had never again been reached Now mostly recognized for walkmans or playstations in the 70 s Sony put out some battleships like the legendary PS X9 Built the first direct driven turntable The SP 10 found his home at countless radio stations throughout the whole world SDKI Technics JVC Victor Pioneer and some other japanese companies made some very fine machines during the golden age of direct drive turntables at the end of th
74. t pr zise und schnelle Regelung des Motorstroms in Verbindung mit einer starren Ankopplung der Motoreinheit an ein nicht zu hohes Massentr gheitsmoment der Teller Motoreinheit sowie eim m glichst hohes Drehmoment des verwendeten Motors Diese Voraussetzungen erf llen gute Direktl ufer und liefern eine nahezu perfekte Plattendrehung Negative Effekte durch erh hte Nadelreibung bei hohen abzutastenden Amplituden treten bei einem solcherma en realisierten System praktisch berhaupt nicht auf Perfekt gel st wurde die starre Ankopplung des Tellers an den Motor brigens beim Technics SP 10Mk2 Hier wird der Teller mir dem Subteller verschraubt Wie klingt s Gute Direktl ufer klingen sehr neutral man h rt das was auf den Scheiben drauf ist keine Effekte wie bei der bekannten schoottischen Fu wipp Maschine sondern pure Information Dies gilt aber ausschlie lich f r die Top of the line Modelle dieser Zeit die hier vorgestellt werden Die preiswerten Massenprodukte f r Einsteiger kann man bez glich Klang getrost vergessen Im DirectDrive Museum wird auf die empfehlenswerten Modelle n her eingegangen Zu den Tugenden guter Direktl ufer geh rt eine ruhige stabile Raumabbildung ein u erst pr zises Timing und eine vergleichsweise hohe Dynamik und Impulsfestigkeit Die Wiedergabe ber gute Direktl ufer hat die Authorit t eines Masselaufwerks ohne dessen Timing Probleme im Bassbereich Wer also auf anmachende Effek
75. te beim Plattenh ren verzichten kann sollte sich einmal unvoreingenommen einen Technics SP 10MklI einen EMT 948 oder einen Denon DP 6000 anh ren Er wird berrascht sein Was kostet s Einen guten Direktl ufer zu bauen ist sehr sehr teuer Ein Technics SP 10 kostete in den 70ern c a 1000 Euro das w ren heute das Zehnfache der abgebildete EMT 948 kostete in den 70ern c a 6000 Euro Diese Ger te entstanden alle in einer Zeit in der die japanische HiFi Industrie Ihre Bl tezeit erlebte Der Yen stand g nstig die Arbeitskosten waren niedrig und eine riesige Menge gut geschulter Ingenieure wartete nur darauf ihr Wissen anzuwenden Nahezu jeder japanische Hersteller von HiFi hatte zu dieser Zeit ein oder zwei Prestige Laufwerke im Porogramm Oftmals waren diese so kalkuliert da die Massenprodukte diese Boliden subventionierten Heute sind die ehemaligen Flaggschiffe noch eine einmalig preisg nstige Eintrittskarte ins analoge Nirvana Was empfehlenswerte Modelle heutzutage so kosten erf hrt man im DirectDrive Museum Wie sieht s aus Unter Design Aspekten mu man hier ber cksichtigen da es sich hier um die Flaggschiffe des jeweiligen Herstellers handelte Jeder Hersteller war hier bestrebt sich vom anderen durch ein wiedererkennbares und unverwechselbares Design zu unterscheiden Edelholz und poliertes Aluminium waren seinerzeit die verwendeten Materialien der verschwenderische Umgang damit war Pflicht
76. ten seen in Asia Here you see the control unit of a DD 100 The quartz lock can be switched off like with the later DQX 1000 Micro DDX 1000 DQX 1000 The DDX 1000 was introduced 1976 1978 the DQX 1000 followed which featured quartz control Unique with the DQX 1000 was the fact that you could actually shut off quatz control with a button on the control box a feature which some users obviously prefer You cannot mix them as the DQX 1000 pictured above has only one strobe ring whereas the DDX 1000 pictured here had two engraved into the platter The DDX 1000 featured a very high torque motor that was manufactured for Micro by JVC The design of the DDX 1000 was unique and the possibility to mount up to 3 arms on the deck was used by many audiophiles in Japan and Germany Here in Germany almost every hifi freak in the 70s harbored dreams about having one and fitting some SME Audiocraft or Grace arm on it So there are many people around that couldn t afford the deck then but now are ready and able to plunk down as much as 750 to 1000 Dollars for this deck However nostalgic reasons aside the sonics of these are not free of faults The chassis and the platter tends to ring a little and the tonearm bases weren t tight enough causing some more unwanted resonances If you come across your dream make sure that it comes with three fitting bases as they are now highly sought after and very expensive AX 1 was the
77. tstellen oder verdreckter Tonabnehmeranschlu pins oder Einstreuungen aufgrund direkt danebenlaufender Stromkabel m ssen wirklich nicht sein Nach meiner Erfahrung sind insbesondere die Steckverbindungen sehr sensibel und sollten periodisch gereinigt werden Bei lteren Armen bringt ein Austausch der Aussenverkabelung mit guten Steckern Neutrik mehr als man denkt Tonarmkabel sollten an der Zarge befestigt werden und in einer Schlaufe zum Armsockel gef hrt werden da sonst bei ung nstiger Verlegung Resonanzen zum Arm bertragen werden k nnen Ein Austausch der Innenverkabelung geht meist einher mit der kompletten Demontage eines Arms Die Gefahr dabei den Arm zu zerst ren ist vorhanden und man sollte dies jemandem berlassen der dies schon einige Male erfolgreich praktiziert hat Bauformen Neben den Tangentialarmen auf die ich mangels Erfahrung nicht n her eingehen will existieren bei Drehtonarmen 2 prinzipielle Bauweisen e Einpunkt Spitzengelagerte Arme Vorteile dieser Arme ist die prinzipielle Reibungs und Resonanzarmut des Spitzenlagers sowie dessen Lebensdauer Auch ist die Performance vieler Einpunkter unabh ngiger vom Laufwerk und vom verwendeten Tonabnehmer Nachteil sind das schwabbelige Handling bei der Justage und im Gebrauch Klanglich bestechen die meisten spitzengelagerten Arme durch Unangestrengtheit Feindynamik und Luftigkeit Tiefe kontrollierte Basswiedergabe geh rt aber nicht unbedingt zu den St rken die
78. tuation depended almost entirely on a clean reference signal and the quality of the motor bearing platter triumvirat itself Instead of hall genarators or sythesizer circuits during the middle of the 70 s quarz crystal oscillators were introduced which managed to put out a quarz constant reference signal What are the advantages A huge advantage of a direct drive record player is the fact that the whole mechanical system consists of just one moveable part the combined motor shaft platter bearing which turns quite slow and has a big mass the platter attached to it almost a mechanical ideal for quiet rotation The resonance of the combined motor bearing assembly lies in the range of 0 5 Hz due to its slow speed compared with the 50 60Hz resonance of the motor of a typical belt driven turntable All belt or idler driven record players incorporate a lot of mechanical parts for adapting the fast speed of the motor to the comparably slow speed of the platter Each of this parts implies an own sonic footprint by inducing resonances and suffering from bearing tolerances in this more or less complex mechanical system Another advantage of good direct drive decks is speed stability The german magazine Audio once measured the frequency of a 3kHz burst played through a belt driven state of the art turntable system There were 4Hz missing To compensate for the effect of slowing the platter during heavy modulations you need a fast and
79. udio gear more expensive This was the time when the cost cutters arrived and soon dominated the engineers The analog battleships developed in the late 70s and early 80s were the first products that were killed by this new ideology Like Dinosaurs they had become bigger and bigger and now they re end had come At the end of the 80s there was only Technics left with their famous SP 10 serving the professional market EMT was bought by Barco and Denon quit production of their professional decks The decks for domestic market were just cheap plastic cages with a motor in it and companies like Luxman or Micro Seiki were forced to switch to belt driven turntables as there was soon no parts supplier for high quality Direct Drives in Japan any more At that time only Nakamichi produced some top Direct Drives The Goldmund decks brought a short renaissance of the Direct Drive among audiophiles but for most of us their prices were way too high Renaissance In The 90s With the invention of new music styles like Rap Direct Drives became popular again Now they served as a kind of musical instrument for creative DJ s with the Technics SL 1210Mk2 becoming a sort of stndard table in the clubs Techniques like spinning or scratching needed decks with strong durable motors and fast regulations of speed You should never try to scratch on a Linn LP12 turntable Technics soo presented a new SL 1210 which never was as good as the original just li
80. uf ein absolutes Minimum Die meisten begn gen sich einmal im Jahr mit 3 4 Tr pfchen l steht in der Bedienungsanleitung ansonsten kann man Sie getrost sich selber berlassen Das Reinigen und Neu len des Tellerlagers ist brigens nicht so einfach zu bewerkstelligen wie bei Riemenl ufern meist ist eine Reinigung aber auch unn tig Ohne Servicemanual oder genaue Kenntnisse der Lager Motorkonstruktion riskiert man hier einen Lagerschaden EMT Tellerlager sind im brigen v llig wartungsfrei Die Zarge Die Zarge f r Direktl ufer MUSS resonanzarm d mpfend und vergleichsweise schwer konstruiert sein Die Bedeutung der Zarge f r den Klang des Plattenspielers wurde in den 70er Jahren oft nicht ausreichend erkannt Als Folge davon sind viele Zargenkonstruktionen japanischer Hersteller aus dieser Zeit zwar h bsch anzusehen aber unbrauchbar Allerdings hat man mit Ihnen eine Schablone f r den Laufwerksausschnitt bei Eigenkonstruktionen Als Material f r den Selbstbau von Zargen kommen folgende in Frage e MDF Eine MDF Zarge leidet unter dem frequenzabhangigen Resonanzverhalten von MDF Meist werden bei reinen MDF Zargen die H hen zu stark bed mpft was sich in einem dumpfen im Bass langsamen Klangbild u ert Zudem variiert die Zusammensetzung von MDF sehr stark und kaum eine MDF Zarge wird genauso wie die andere klingen Interessant kann MDF in Verbindung mit Metall sein Ein MDF Aluminium Sandwich vereint die Vorteil
81. ve SP 10 introduced in 1981 mostly for asian audiomaniacs It was sold at the same time like the Mk2 which remained the standard for professionals until the end of the 80s The platter weighs a whopping 20pds and is bolted to the motor There are rumours that the motor of the Mk3 had such a high torque that it was able to spin the platter with a man standing on it Mk3s are very expensive and outside of asia they re almost impossible to find Technics SP 10 Kaneta Akito Kaneta modified a Technics SP 10 and published the results The result is an advanced concept For details look at the Kaneta Pages Technics SP 12 Now this is a real rare bird the almost unknown Technics SP 12 ifte vive 222 x In xx ER Technics SP 15 SP 20 SP 25 These are the little brothers of the SP 10 with the SP 20 introduced in 1976 seems to be a bit of a mystique deck as never came across one The SP 15 from 1979 and the SP 25 are very good decks but lacking the last bits of bullet proof build quality and sonic performance of the SP 10 As they are not considerable cheaper than the original I would opt to go for an SP LOMk2 Above you see an SP 25 in its full glory complete with plinth and the EPA 500 tonearm which featured changeable armtubes As the armtube together with all weights is changed you have the possibility to change between various carts in a few seconds Keep in mind that armtubes for the E
82. weaks work in the right direction Common tweaks for Direct Drive turntables are e Record clamps weights With a record clamp first check out if it works with your turntable as you may find with quite a lot of spindles of these vintage decks a record clamp won t work at all The same applies for weights remember that it is very important that the weight is exactly centric Weights put a load on the main bearing and might cause bearing noise or put stress on your motor as all regulations try to reach speed within a short time during startup of the platter A weak motor might even blow Using a rubber mat dust particles might get pressed in your records don t use weights and clamps Platter mat With many vintage machines you will find that after removing the original rubber mat from the platter it will ring like a bell The stock rubber mats did a good job in damping this platter ring but quite often you will find sone rings on them so that the record is not supported very well A good and cheap tweak is to put a thin felt mat Linn upon the stock rubber mat On my SP 10s I use a thin cork mat with a felt mat Linn upon it Hard mats made out of glass or acryle should be avoided with a ringin platter Puttin these upon the stock rubber mats makes them next to useless However there are still a lot of damping mats around which work very good with these decks The Audioquest Sorbothane mat special mats made out of leat
83. y to get at your local lumber yard Birch plywood can be veneered or painted so the result will please your eyes and that of your wife too Hardwood like mahagony cherry maple These are woods musical instruments are built from Mahagony seems to sound more pronounced in the bass whereas maple is more brilliant You can get excellent results with hardwood plinths if you chose a wood that fits to the sonics of your deck your system your taste The major drawback is the fact that it s not that easy to get pieces that big and they re very expensive Marble Stone Obsidian Stone and marble has minimal damping properties but it is very dense and has high weight The sonics of stone plinths are not to my taste Obsidian artificial stone is a little better here Anyway expensive and you need a specialist that builds one for you A short description of building a massive plinth made out of ply Get 20mm 0 75 thick sheets of birchply at your local lumberyard who might cut it to the right dimensions Usually your plinth will be at minimum that thick as your deck 80 120mm 3 4 so you know how many sheets you need The thicker your plinth will be the heavier it is and heavy is never wrong Width and depth of your plinth is defined by the size of your deck and the tonearm you want to mount on the deck 9 10 12 Round the centre armbearing of your arm you should calculate a circle of at least 70mm 4 diameter so you re a

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