Lexicon 312 Car Amplifier User Manual
Contents
1. H x 15 5 D 120V configurations available with 19 x 3U high rack mount faceplate Dimensions Weight 212 22lbs net 26lbs shipping 225 40lbs net 45lbs shipping 312 33lbs net 38lbs shipping 412 4416 net 49lbs shipping 501 44165 net 49lbs shipping Power Requirements 120VAC 60Hz or 230VAC 50Hz All specifications subject to change without notice Lexicon Inc 3 Oak Park Bedford MA 01730 Tel 781 280 0300 Fax 781 280 0490 www lexicon com Lexicon Part 070 11325 Printed in Canada2. advisable to use Parallel mode for direct connection to a speaker Parallel mode is generally only useful when abnormally low impedances 1 or less are created from parallel wiring of multiple speakers Lexicon NT Series Amplifiers Installation Mounting Selecting the appropriate installation location for your amplifier is perhaps the single most important factor in ensuring a long trouble free service life Al though the amplifier is very conservatively designed you must provide some airflow around the unit If you intend to stack multiple amplifiers in an enclosed space you should consider installing a fan or otherwise assuring adequate airflow around the amps as they rely on convection cooling As short runs of power and speaker cabling optimize efficient energy transfer try to locate the amplifier close to the speakers and power source All models in the NT Series share a rugged chassis design that can easily be rack mounted with machine screws 10 or M5 While the vast majority of weight is in the front of each amplifier support should be provided for the rear by a shelf or bracket The amplifiers are designed to draw air in through the sides cooling the heat sinks and ventilating out the top cover To provide adequate ventilation when racking multiple units place a 1U spacer between amplifiers We do not recommend using a perforated panel An air inlet should be provided at the bottom of the rack and a ventilator or
3. amplifiers with the exception of the 501 which is single channel can be bridged doubling the normal output voltage Please refer to the rear panel diagram for each model for specific wiring information Note that only the red colored output connectors are used in bridged operation To ensure consistent polarity note the and markings on the bridged operation wiring diagram on the amplifier rear panel No sound Check setting of the input connector type BAL UNBAL and operation mode BRIDGED INDI VIDUAL Check the speaker cable wiring on the rear panel and verify correct configuration for individual or bridged operation Use another amplifier channel to verify that the input signal is good Use another speaker to verify that the speaker is not faulty No LEDs Check the power cord connection Disconnect power cord from amplifier and check rear panel fuses Check front panel power switch is ON Turn Remote ON OFF switch to LOCAL If amplifier turns on check voltage of the trigger signal at the input It must be at least 3 8 volts LEDs continuously red or yellow Check input and output cables for short circuits If LEDs remain red or yellow disconnect the power and contact Lexicon Customer Service at 617 736 0300 or your local dealer Your Lexicon amplifier requires no maintainence It is however good electrical practice to clean all connectors once a year An occasional dusting of the exterior surface with a
4. exhaust fan should be provided at the top Models 225 and 501 13 1 8 _ gt have a rear panel 17 _ ao Rack mount faceplate with handles 1 7 8 1 Lexicon amplifiers do not require any specialized line conditioners as they have special power supply circuitry designed to reject power line problems like line spikes surges and RFI Simply plug each amplifier directly into a line socket In areas where there is a high likelihood of lightning strikes or other potentially catastrophic surges additional protection may be warranted Verify that any surge protection device you choose has ample power conducting capabilities High power installations may benefit from a review of your electrical service to ensure that adequate power is available and to minimize the chance of ground loops Amplifiers rated for 120V may be used only on a 60Hz line Complete all audio input and output connections and make sure that the front panel power switch is in the OFF out position before connecting the AC power cord Never make or break any connection unless power to the amplifier has been disconnected Unless you are bridging channels make sure the mode switch adjacent to the input is set to individual Gain level is automatically matched to the type of input used when you select the unbalanced RCA type connectors or balanced mode XLR or 1 4 with the rear panel switch Use high qualit
5. of signal distortion including clipping excessive DC or supersonic signals and short circuits in the cabling Multi function LEDs on the front panel are provided to alert you to various opera tional states of the amplifier In normal operation the front panel LEDs will be lit green indicating that power is on and the unit is in normal operation The LEDs will light yellow when the amplifier is at the threshold of clipping Red indicates actual overload or distortion Turn the volume down immedi ately The speaker you save may be your own NOTE The Lexicon NT Series amplifiers are quite powerful and can damage almost any speaker if used carelessly Lexicon is not respon sible for speaker damage nor is it reasonable to expect the speaker manufacturer to honor warranty claims on speakers that have been so abused When the amplifier is turned off it is normal for the individual LEDs to dim at differing rates sometimes changing color as well If one or more LEDs fail to light up disconnect the power cord and check the fuses next to the power cord CAUTION Replace fuses only when the power cord is detached from the amplifier and with the type and size of fuses listed on the amplifier rear panel The Lexicon CP 3 PLUS and all of the DC 1 series of Digital Controllers provide a low voltage trigger signal when they are in operation This signal can be used to turn on as many as 4 amplifiers whenever you turn on your proce
6. Lexicon NT Series Amplifiers User Guide Models 212 312 412 225 and 501 lexicon Unpacking and Inspection After unpacking the amplifier save all packing materials in case you ever need to ship the unit Thoroughly inspect the amplifier and packing materials for signs of damage Report any shipment damage to the carrier at once report equipment malfunction to your dealer Precautions Save these instructions for later use Follow all instructions and warnings marked on the unit Always use with the correct line voltage Refer to the manufacturer s operating instructions for power requirements Be advised that different operating voltages may require the use of a different line cord and or attachment plug Do not install the unit in an unventilated rack or directly above heat producing equipment such as power amplifiers Observe the maximum ambient operating temperature listed in the product specification Slots and openings on the case are provided for ventilation to ensure reliable operation and prevent it from overheating these openings must not be blocked or covered Never push objects of any kind through any of the ventilation slots Never spill a liquid of any kind on the unit This product is equipped with a 3 wire grounding type plug This is a safety feature and should not be defeated To prevent shock or fire hazard do not expose the unit to rain or moisture or operate it where it will be exposed to water Do notatte
7. agfolk Hvis dekselet fjernes utsettes man for livsfarlig h yspenning Komponenten er merket med denne trekanten som betyr at den tilh rende litteraturen inneholder viktige opplysninger om drift og vedlikehold Komponenten er merket med denne trekanten som er en advarsel om at det finnes uisolert farlig spenning inne i kabinettet h y nok til utgj re en fare for elektrisk st t Suomi T rkeit turvallisuusohjeita S ilyt n m ohjeet tulevaa k ytt varten Seuraa kaikkia yksikk n merkittyj ohjeita ja varoituksia K yt aina oikeaa verkkoj nnitett Tehovaatimukset selvi v t valmistajan k ytt ohjeista Huomaa ett eri k ytt j nnitteet saattavat vaatia toisenlaisen verkkojohdon ja tai pistokkeen k yt n l asenna yksikk telineeseen jossa ei ole tuuletusta tai v litt m sti l mp tuottavien laitteiden esim tehovahvistimien yl puolelle Ymp rist n l mp tila k yt ss ei saa ylitt tuotespesifikaation maksimil mp tilaa Kotelo on varustettu tuuletusreiill ja aukoilla Luotettavan toiminnan varmistamiseksi ja ylil mpenemisen v ltt miseksi n it aukkoja ei saa sulkea tai peitt Mit n esineit ei saa ty nt tuuletusaukkoihin Mit n nesteit ei saa kaataa yksikk n Tuote on varustettu 3 johtimisella maadoitetulla verkkopistokkeella T m on turvallisuustoiminne eik sit saa poistaa S hk iskun ja palovaaran v ltt miseksi yksikk ei saa
8. and manufactured for absolute linearity and stability Utilizing a unique Quad Complementary output stage the NT Series amplifers produce less distortion than even Class A designs with higher efficiency and better long term reliability A wide variety of input and output connections and configu rations are accommodated as well as unique features specific to complex multi channel audio systems The amplifiers are not voiced to sound a certain way We believe an amplifier s goal is simple to amplify the signal accurately and cleanly into any load without imparting any coloration or distortion Indeed the distortion components of our amplifiers are near the limits of sophisticated test instru ments The amplifier s sound can best be described as utterly neutral While the amplifier s goal is simple its job is not Over 20 years of amplifier research and design have resulted in products that perform flawlessly year after year after year Sophisticated engineering manufacturing and testing are combined with meticulous craftsmanship and pride We believe that you will come to pay our amplifer the highest compliment you will forget about it The amplifier will quietly cleanly and reliably perform its job Enjoy the music enjoy the movies forget about the equipment Thank you for choosing Lexicon This manual is designed for installation of any of the five amplifiers models in the Lexicon series 212 312 412 225 and 501 Wh
9. annel 3 providing an additional 120 watts 8Q Lexicon NT Series Amplifiers Model 412 The 412 power amplifier consists of 4 independent amplifier modules each with its own 55V power supply and 4 custom power transistors for a total of 16 output devices The 412 can be configured to drive 2 3 or 4 speakers 4 channels at 120 watts into 8Q or 2 channels at 120 watts plus 1 channel at 400 watts or 2 channels at 400 watts This provides complete flexibility in any present or future audio or video system With 4 discrete channels available the 412 is an excellent choice to bi amplify your audio or video system either actively using an electronic crossover or passively using independent connectors for the high and low frequency drivers Model 501 The 501 power amplifier consists of 2 amplifier modules each with its own 60V power supply and 8 custom power transistors for a total of 16 or 32 per stereo pair The 2 modules can be configured in either Series or Parallel mode to form a single mono power amplifier capable of up to 800 watts The Series mode connects the modules in a bridged configuration The output voltage swing is thus additive and is appropriate for driving loads from 3 8Q Parallel mode yields the voltage swing of a single amplifier module but the current available is additive and is appropriate for driving loads from 1 30 As the impedance ranges describe nominal not minimum impedance it is almost never
10. ar la unidad con seguridad y para prevenir sobrecalentamiento y por lo tanto no pueden ser obstruidas o cubiertas No introduzca objetos de ning n tipo a trav s de las ranuras de ventilaci n y nunca deje caer ning n l quido sobre la unidad Este producto est equipado con un enchufe de 3 clavijas con conexi n a tierra Este es un elemento de seguridad que no debe ser eliminado Para prevenir descargas el ctricas o incendios mantengala unidad alejada de la lluvia humedad o cualquier lugar en el que pueda entrar en contacto con agua No trate de hacer funcionar la unidad si se ha ca do est da ada ha entrado en contacto con l quidos o si nota cualquier cambio brusco en su funcionamiento que indique la necesidad de hacerle un servicio de mantenimiento Esta unidad deber ser abierta nicamente por personal calificado Si usted quita las coberturas se expondr a voltajes peligrosos Este tri ngulo que aparece en su componente le advierte sobre la existencia dentro del chasis de voltajes peligrosos sin aislantes voltajes que son lo suficientemente grandes como para causar electrocuci n Este tri ngulo que aparece en su componente lo alerta sobre las instrucciones de operaci n y mantenimiento importantes que est n en los materiales de lectura que se incluyen Italiano Importanti norme di sicurezza Conservare le presenti norme per l utilizzo futuro Osservare tutte le istruzioni e le avvertenze apposte sull un
11. eau N essayez pas de faire fonctionner l appareil s il est tomb a terre a t endommang expos a un liquide ou si vous observez des diff rences nettes dans son fonctionnement indiquant la n cessit de r parations Cet appareil ne doit tre ouvert que par un personnel de service qualifi En enlevant les couvercles vous vous exposez a des tensions lectriques dangereuses Ce triangle sur votre appareil vous avertit de la pr sence de tension dangereuse non isol e a l int rieur du boitier une tension suffisante pour repr senter un danger d lectrocution Ce triangle sur sur votre appareil vous invite de suivre d importantes instructions d utilisation et d entretien dans la documentation livr e avec le produit Espa ol Instrucciones importantes de seguridad Guarde esta instrucciones para uso posterior Utilice siempre el voltaje correcto Dir jase a las instrucciones de operaci n del fabricante para obtener las especificaciones de potencia Est al tanto de que voltajes de operaci n distintos requieren el uso de cables y o enchufes distintos No instale esta unidad en un estante sin ventilaci n ni tampoco directamente encima de equipos que generen calor tales como amplificadores de potencia F jese en las temperaturas ambientales m ximas de operaci n que se mencionan en las especificaciones del producto Las aperturas y ranuras del chasis sirven para proveer la ventilaci n necesaria para oper
12. ichever model you have selected we are sure that you will be pleased with its quality and performance Lexicon NT Series Amplifiers Intoduction The 17 model is standard for all models in the NT Series A 19 rack mount version is available in 120V configurations We have designed this manual to provide a brief overview of each amplifier as well as to provide the information necessary for safe installation and operation We trust that the time you invest in reviewing these brief instructions will be rewarded by the best possible performance and longevity of your equipment Lexicon NT Series Amplifiers Overview Bad Models 212 and 225 Model 312 The 212 stereo amplifier consists of 2 amplifier modules each with its own power supply The channels may be operated independently 1 left 2 right for stereo at 120 watts channel 80 200 watts Q 40 or bridged monaural to form a single 400 watt amplifier into 8Q The 225 stereo amplifier provides 250 watts channel 8Q 400 watts 4Q or it can be bridged monaural to form a single 800 watt amplifier into 8Q The 312 power amplifier consists of 3 independent amplifier modules each with its own 55V power supply and 4 custom power transistors for a total of 12 output devices Channels 1 2 and 3 may be operated independently at 120 watts channel 80 200 watts 4Q Channels 1 and 2 can be bridged monaural to form a single 400 watt channel into 8Q with ch
13. il senere brug F lg alle anvisninger og advarsler p apparatet Apparatet skal altid tilsluttes den korrekte sp nding Der henvises til brugsanvisningen der indeholder specifikationer for str mforsyning Der g res opm rksom p at ved varierende driftssp ndinger kan det blive n dvendigt at bruge andre lednings og eller stiktyper Apparatet m ikke monteres i et kabinet uden ventilation eller lige over andet udstyr der udvikler varme f eks forst rkere Den maksimale omgivelsestemperatur ved drift der st r opf rt i specifikationerne skal overholdes Der er ventilations bninger i kabinettet For at sikre apparatets drift og hindre overophedning m disse bninger ikke blokeres eller tild kkes Stik aldrig noget ind igennem ventilations bningerne og pas p aldrig at spilde nogen form for v ske p apparatet Dette apparat er forsynet med et stik med jordforbindelse Denne sikkerhedsforanstaltning m aldrig omg s Apparatet m ikke uds ttes for regn eller fugt og m ikke bruges i n rheden af vand for at undg risiko for elektrisk st d og brand Apparatet m aldrig bruges hvis det er blevet st dt beskadiget eller v dt eller hvis ndringer i ydelsen tyder p at det tr nger til eftersyn Dette apparat m kun bnes af fagfolk Hvis d kslet tages af uds ttes man for livsfarlig h jsp nding Denne meerkatpa komponenten advarer om uisoleret farlig sp nding i apparatet hoj nok til at give elekt
14. ita Utilizzare esclusivamente con la tensione di rete corretta Consultare le istruzioni operative fornite dal fabbricante per i dati riguardanti la tensione e l assorbimento di corrente Potrebbe essere necessario l uso di cavi di rete e o di spine diverse a seconda della tensione utilizzata Non installare l unit in uno scaffale privo di ventilazione oppure direttamente sopra unafonte di calore come ad esempio un amplificatore Non superare la temperatura ambientale massima di funzionamento riportata nei dati tecnici del prodotto Le fessure e le altre aperture nella scatola servono alla ventilazione Per un funzionamento affidabile e per evitare un eventuale surriscaldamento queste aperture non vanno ostruite o coperte in nessun modo Evitare in tutti icasi di inserire oggetti di qualsiasi genere attraverso le fessure di ventilazione Non versare mai del liquido di nessun tipo sull unit Questo prodotto viene fornito con una spina a 3 fili con massa Tale dispositivo di sicurezza non va eliminato Per prevenire il pericolo di folgorazione e di incendio non esporre l unit alla pioggia o ad un umidit eccessiva evitare di adoperare l unit dove potrebbe entrare in contatto con acqua Evitare di adoperare l unit se la stessa stata urtata violentemente se ha subito un danno se stata esposta ad un liquido o in caso di un evidente cambiamento delle prestazioni che indichi la necessit di un intervento di assistenza
15. mptto operate the unit if it has been dropped damaged exposed to liquids or if it exhibits a distinct change in performance indicating the need for service This unit should only be opened by qualified service personnel Removing covers will expose you to hazardous voltages Thistriangle which appears on your Thistriangle which appears on your component alerts you to the pres ence of uninsulated dangerous volt CAUTION tna age inside the enclosure voltage inga that may be sufficient to constitute i in this accompanying litera risk of shock Acknowledgements The Lexicon NT Series amplifiers are custom manufactured for Lexicon by Bryston Ltd of Ontario Canada The CP and DC Series are manufactured under license from Dolby Laboratories Licensing Corporation Additionally licensed under one or more of the following patents U S numbers 3 632 886 3 746 792 and 3 959 590 Canadian numbers 1 004 603 and 1 037 877 Dolby and the double D symbol are trademarks of Dolby Laboratories Licensing Corporation The NT Series amplifiers are manufactured under license from LucasArts Entertainment Company Lexicon Inc 3 Oak Park Bedford MA 01730 Tel 781 280 0390 Fax 781 280 0490 www lexicon com THX and Home THX Cinema are trademarks of LucasArts Entertainment Company Copyright 1995 Lexicon Inc All Rights Reserved Lexicon Part 070 11325 Dansk Vigtig information om sikkerhed Gem denne vejledning t
16. olla sateessa tai kosteassa eik sit saa k ytt m r ss ymp rist ss l k yt yksikk jos se on pudonnut vaurioitunut kostunut tai jos sen suorituskyky on huomattavasti muuttunut mik vaatii huoltoa Yksik n saa avata vain laitteeseen perehtynyt huoltohenkil Kansien poisto altistaa sinut vaarallisille j nnitteille T m kolmio joka esiintyy komponentissasi varoittaa sinua erist m tt m n vaarallisen j nnitteen esiintymisest yksik n sis ll T m j nnite saattaa olla riitt v n korkea aiheuttamaan s hk iskuvaaran T m kolmio joka esiintyy komponentissasi kertoo sinulle ett t ss tuotedokumentoinnissa esiintyy t rkeit k ytt ja yll pito ohjeita Svenska Viktiga s kerhetsf reskrifter Spara dessa f reskrifter f r framtida bruk F lj alla anvisningar och varningar som anges p enheten Anv nd alltid r tt n tsp nning Se tillverkarens bruksanvisningar f r infor mation om effektkrav M rkv l att andra matningssp nningar eventuellt kr ver att en annan typs n tsladd och eller kontakt anv nds Installera inte enheten i ett oventilerat stativ eller direkt ovanf r utrustningar som avger v rme t ex effektf rst rkare Se till att omgivningens temperatur vid drift inte verskrider det angivna v rdet i produktspecifikationen Beh llaren r f rsedd med h l och ppningar f r ventilering F r att garantera tillf rlitlig funktion och f rhindra
17. risk stod Denne meerkat pa komponenten advarer om vigtig drifts og vedligeholdsinformation i den tilh rende litteratur Norsk Viktig informasjon om sikkerhet Ta vare pa denne veiledningen for senere bruk F lg alle anvisningene og advarslene som er angitt apparatet Apparatet skal alltid anvendes med korrekt spenning Produktbeskrivelsen inneholder spesifikasjoner for stramkrav V r oppmerksom pa at det ved ulike driftsspenninger kan v re n dvendig bruke en annen ledning og eller stopseltype Apparatet skal ikke monteres i skap uten ventilasjon eller direkte over varmeproduserende utstyr som for eksempel kraftforsterkere Den maksimale romtemperaturen som star oppgitt i produktbeskrivelsen skal overholdes Apparatet er utstyrt med ventilasjonsapninger For at apparatet skal veere palitelig i bruk og ikke overopphetes m disse apningene ikke blokkeres eller tildekkes Stikk aldri noe inn ventilasjonsapningene og pass p at det aldri soles noen form for v ske p apparatet Dette apparatet er utstyrt med et jordet st psel Dette er en sikkerhetsforanstaltning som ikke ma forandres Unnga brannfare og elektrisk stot ved a sorge for at apparatet ikke utsettes for regn eller fuktighet og ikke anvendes n rheten av vann Apparatet skal ikke brukes hvis det har blitt utsatt for stat er skadet eller blitt vatt eller hvis endringer i ytelsen tyder pa at det trenger service Dette apparatet skal kun apnes av f
18. rtungsanweisungen in der mitgelieferten Dokumentation zu finden sind Fran ais Instructions de S ret Importantes Gardez ces instructions pour r ference future Observez toutes les instructions et tous les avertissements marqu s sur l appareil Branchez uniquements sur un r seau de tension indiqu e Consultez le manuel d instruction du fabriquant pour les sp cifications de courant N oubliez pas que diff rentes tensions peuvent n cessiter l utilisation de cables et ou de fiches de connexion diff rents N installez pas l appareil en un compartiment non a r ou directement au dessus d quipements g n rateurs de chaleur tels qu amplificateurs de courants etc Ne d passez pas la temp rature ambiante maximale de fonctionnement indiqu e dans les sp cifications du produit Des fentes et ouvertures sont pr vues dans le bo tier pour I a ration Pour assurer le bon fonctionnement et pour pr venir l chauffement ces ouvertures ne doivent pas tre couvertes ou bloqu es N ins rez pas d objets dans les fentes d a ration Emp chez tout liquide de se r pandre sur l appareil Ce produit est muni d une fiche a trois fils pour la mise a terre Ceci est une mesure de s curit et ne doit pas tre contrari e Pour emp cher les chocs lectriques et le danger d incendie vitez d exposer l appareil a la pluie ou l humidit et ne le mettez pas en marche en un endroit ou il serait expos aux claboussures d
19. soft cloth helps maintain the unit s luster Do not use any abrasive chemicals or cleaners as this will damage the surface Lexicon NT Series Amplifiers Bridged Operation Troubleshooting Maintenance Lexicon NT Series Amplifiers Specifications Models 212 312 412 Model 225 Model 501 S N IM THD Input Sensitivity Input Impedance Slew Rate Damping Factor Radiated Interference Polarity Controls and Indicators Connectors General 120 Watts per channel 80 200 watts 40 Bridging channels yields 400 Watts 8Q 250 Watts per channel 80 400 Watts 40 Bridging channels yields 800 Watts 8Q 500 Watts 8Q 800 Watts 4Q gt 110dB lt 0 01 for 28 28 vrms Approximately 100 watts into 8Q 50 kQ 60 Individual mode gt 500 20 Hz into 80 Bridged mode gt 250 20 Hz into 80 Model 501 gt 300 20 Hz into 8Q lt 3 gauss RMS within 2 of case Non inverting Power on off 3 color LEDs indicates operational status Toggle switches for bridged individual operation 212 225 312 412 series parallel operation 501 balanced unbalanced operation all models 6 position rotary switch for remote trigger delay All connectors are gold plated Inputs Balanced 1 4 tip ring sleeve and XLR Outputs heavy duty 5 way binding posts Remote Trigger input accepts bare wire 18 gauge or smaller 3 pin IEC power connector 212 17 0 X x 5 25 H x 9 D 225 312 412 501 17 0 X x 5 25
20. ssor Contact Lexicon if you need to turn on more than 4 amplifiers The timing of the Turn ON function is controlled by a six position rotary switch on the amplifier The delay function is provided to allow sequential power up of multiple amplifiers minimizing potential power line disruptions by stagger ing the Turn ON times At the 0 setting the amplifier will turn on immediately when it receives the 5V trigger signal Positions 1 4 will give delays of approxi mately 1 4 seconds respectively before power up The input trigger circuit is completely solid state and draws 33mA during the maximum delay 4 seconds and 16mA when ON It will accept signals from 3 8 20V To connect a trigger signal loosen the small screw in the round hole above the rectangular wire terminal opening Strip off a few millimeters of wire insulation and insert the bare wire into the rectangular opening Tighten the screw and make sure that the wire is held captive Wire multiple amplifier triggers in parallel Common zip cord wire is adequate If you find that using audiophile cable for the trigger signal sounds better feel free to use it just don t tell anyone else pin outs on the CP 3PLUS and DC 1 series have appropriate signals available via the rear panel DIN connectors Pin 1 is ground and Pin 3 is 5V On the DC 1 Pin 3 may be 12V depending on an internal jumper configuration but either 5V or 12V will work All of the Lexicon
21. tecnica Ogni intervento sull unit vaeseguito esclusivamente da personale qualificato La rimozione della copertura comporta l esposizione al pericolo di folgorazione Il presente triangolo impresso sul componente avverte della presenza di tensioni pericolose non isolate all interno della copertura tali tensioni rappresentano un pericolo di folgorazione II presente triangolo impresso sul componente avverte l utente della presenza nella documentazione allegata diimportanti istruzioni relative al funzionamento ed alla manutenzione Intoduction OVEIVICW ii ia Models 212 0d Zi o a as 2 IS KT GREN SPN SSA NAN SINAN OE 2 YAA A 3 0 3 Slade 4 Mounting evisos ainia 4 Power RequiremeniS ococococococononononnnnnnnnennnnnnornrnnnnncncncnnnnnononononanananarararan anos 5 Audio CONNECHIONS seeren e r a a r conan cancion aa 5 Ground Lift Switch 23 00 a a 5 Operation sais sass csc casas ac tia Front Panel LEDS cuca dicas 6 Remote Trigger cinc ladra its 6 Bridged Operation ml aida 7 Troubleshooting as 7 E daa bees 7 SPECINCAUONS oo nn Contents Congratulations on your purchase of a Lexicon amplifier Your amplifier has been designed
22. verhettning f r dessa ppningar inte blockeras ellert ckas Inga f rem l f r skuffas in genom ventilationsh len Inga v tskor f r spillas p enheten Produkten r f rsedd med en jordad 3 tr dskontakt Detta r en s kerhetsfunktion som inte f r tas ur bruk F r att undvika elst t eller brandfara f r enheten inte uts ttas f r regn eller fukt eller anv ndas p st llen d r den blir v t Anv nd inte enheten om den har fallit i golvet skadats blivit v t eller om dess prestanda f r ndrats m rkbart vilket kr ver service Enheten f r ppnas endast av beh rig servicepersonal Farliga sp nningar blir tillg ngliga n r locken tas bort Denna triangel som visas p din komponent varnar dig om en oisoleradfarlig sp nninginne i enheten Denna sp nning r eventuellt s h g att fara f r elst t f religger Denna triangel som visas p din komponent anger att viktiga bruksanvisningar och serviceanvisningar ing r i dokumentationen i fr ga Deutsch Wichtige Sicherheitsanweisungen Heben Sie sich diese Sicherheitsanweisungen auch f r spater auf Befolgen Sie alle auf der Vorrichtung stehenden Anweisungen und Warnungen Immer nur mit der richtigen Spannung verwenden Die Gebrauchsanweisungen des Herstellers informieren Sie Uber die elektrischen Anforderungen Vergessen Sie nicht daB bei verschiedenen Betriebsspannungen ggf auch verschiedene Leitungskabel und oder Verbindungsstecker zu ver
23. wenden sind Stellen Sie die Vorrichtung nicht in ein unbel ftetes Gestell oder unmittelbar ber warmeerzeugende Ger te wie z B Tonverst rker Halten Sie die in den Produktspezifikationen angegebene maximale Umgebungstemperatur bei Betrieb ein Schlitze und Offnungen im Geh use dienen der Bel fung um verlaBlichen Betrieb sicherzustellen und Uberheizen zu vermeiden d rfen diese Offnungen nich verstopft oder abgedeckt werden Stecken Sie nie irgend einen Gegenstand durch die Bel ftungsschlitze Vergie Ben Sie keine Fl ssigkeiten auf den Apparat Dieses Produkt is mit einem 3 drahtigen Erdungsstecker ausger stet Diese SicherheitsmaBnahme darf nicht unwirksam gemacht werden Um elektrischen Schlag oder Feuer zu vermeiden setzen Sie den Apparat weder Regen noch Feuchtigkeit aus und betreiben Sie ihn nicht dort wo Wasser eindringen k nnte Versuchen Sie nicht den Apparat zu betreiben falls er fallen gelassen besch digt oder Fl ssigkeiten ausgesetzt wurde oder falls sich seine Arbeitsweise derart ndert da daraus ein Bedarf nach Raparatur zu schlie Ben ist Dieser Apparat sollte nur von qualifizierten Fachleuten ge ffnet werden Das Abnehmen von Abdeckungen setzt Sie gefahrlichen Spannungen aus Dieses Dreieck auf Ihrem Apparat warnt Sie vor nicht isolierter gefahrlicher Spannung im Geh use stark genug um eine Ber hrungsgefahr darzustellen Dieses Dreieck auf Ihrem Apparat bedeutet da wichtige Betriebs und Wa
24. y speaker cables of at least 16 gauge For runs longer than 3 meters thicker lower AWG cable should be used The total loop resistance of the speaker wire should be less than 0 1Q Consult your dealer for specific recommendations All input and output connectors are gold plated and should be used with high quality cable with gold plated connectors for optimal low distortion and reliable signal transfer One of the biggest challenges in large audio and video systems is minimizing the audio hum caused by a ground loop Raising the amplifier rear panel Ground Lift switch to its up position puts a 10Q resistor in series between the system ground and the chassis ground The chassis is still grounded This may reduce the hum Do NOT leave the ground lifted if it does not make a difference Often hum is caused in A V systems through connection to cable TV cables or other equipment which are at a different ground potential Addressing this at the source is the most efficient path to a clearer quieter system Lexicon NT Series Amplifiers Power Requirements Audio Connections Ground Lift Switch The Ground Lift Switch does not disconnect the chassis from the third prong on the power cord which must be left intact for safety reasons Lexicon NT Series Amplifiers Operation Front Panel LEDs Remote Trigger All amplifiers in the Lexicon NT Series are equipped with sophisticated com parator circuits which detect sources
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