Adcom GTP-600 User's Manual
Contents
1. 11 12 13 AUDIO SOURCE HOOK UP Connect up to three external high level audio sources CD players cassette decks MD or DCC devices etc to the appropriate input jacks and on the rear panel Be sure to observe proper channel continuity Left channel to Left channel Right to Right The line inputs on all audio recording devices should be connected to the GTP 600 s Corresponding tape output jacks Qor VIDEO SOURCE HOOK UP Make all video connections to and from the GTP 600 including TV monitor using EITHER the standard composite video jacks OR the high definition S video connectors DO NOT INTERMIX Connect up to four video sources videodisc players video cassette players camcorders video cassette recorders etc to the appropriate jacks on the rear panel Video 1 and 2 inputs are for play only devices videodisc players for example while Video 3 and Video 4 have complete input and output connections for a play record device such as a VCR tandard composite video connections go to the appropriate yellow color keyed RCA jacks and High definition S video connections go to the appropriate multi pin connectors through Left and Right channel audio connections for your video components go to the appropriate white and red color keyed RCA jacks and TV HOOK UP Connect your TV monitor or receiver to either of the two Standard composite Monitor outpu2. Surround Sound Tuner Preamplifier OWNER S MANUAL THE FOLLOWING PRECAUTIONS AND SAFETY INSTRUCTIONS ARE REQUIREMENTS OF UL AND CSA SAFETY REGULATIONS Warning To reduce the risk of fire or electric shock do not expose this unit to rain or moisture CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR The graphic symbol of a lightning flash with an arrow point within a triangle signifies that there is dangerous voltage within the unit and it poses a hazard to anyone removing the cover to gain access to the interior of the unit Only qualified service personnel should make any such attempt The graphic symbol of an exclamation point within an equilateral triangle warns a user of the device that it is necessary to refer to the instruction manual and its warnings for proper operation of the unit Do not place this unit on an unstable cart stand tripod bracket or table The unit may fall causing serious injury to a child or adult and serious damage to the unit Use only with a cart stand tripod bracket or table recommended by the manufacturer or sold with the unit Any mounting of the device should follow the man ufacturer s instructions and should use a mounting ac cessory recommended by the manufacturer AN AN Read all the safety and operating instructions before connecting or using this unit Retain this notice and th owner s manual for future reference All
3. o2ug eq EICH z ade Sea voopm Lospu Zoapia apia ooool ii t ade Buni Q2 sseg sw gi sw OZ sw SZ OOO 00000000F 9 ejop yoeyo eq punonns ira wus 4 OG Sie i 498 u au0 030509 Duow pueiq Wu anw wpne lt Duun gt jenueusy es WY W3 s voyd O3149 J2UVEYS S 9 Qnay6iw gsg e pey aouo SO e unipeis dSQ e 2601 Org AQICR waun e au WOO Ajuo SjepOW ulea jeynno Ov PSYNIMSUN UO sjapow urea z X sienno Ov Peu IIMS p109 8ul OW ojoejdeoai esnj aul OV U91IMS 10 29J9S Jay ssed MOJ JBJOOMQNS J8 00MqnS indjno dwea d vie 40 08UU09 NIG jeuueuonnui xUNIGYV jndino dwead wey z x jeuueuo 191u92 sindino duueaid uie QUBIY 29y 9 1497 eeu sjndjno dweaid uey UBIY 10044 9 91 10013 sindino dweaid ure xew YAOOS payouasun IN 1anod o 688 0 0 O9 iQuuowu GIPA S UOISUA X9 JOSUAS OJJUOD BOWS z x sindino 19jeedoJ peJeJjul OUJUOD ejouueH jndino AL Joyuow O8pIA S u91AS O9PIA S 10 pJepue1S epouiJ DOPIA z X sindino AL JOWUOW pJepuels oepi S indino p O6plA oap a S Ndu p O9plA oepi S indino CAPA oepi S Ndu O8plA oepi S Ndu Z 09plA OBPIA S Ndu O9PIA olpne Hy 71 sindino p CAPIA 989898088 0 O Q OapiA puepueys 1ndino O9plA opne Y 3 1 sindu p o9plA COPIA puepuejs indu v O9plA cipne H 9 1 sindino o9plA 09pl piepue
4. 10 5kg GTP600 1 0 1093
5. A The power cord or the plug has been damaged or B Objects have fallen or liquid has been spilled into the unit or C The unit has been exposed to rain or liquids of any kind or D The unit does not appear to operate normally or exhibits a marked change in performance or E The device has been dropped or the enclosure damaged DO NOT ATTEMPT SERVICING OF THIS UNIT YOURSELF REFER SERVICING TO QUALIFIED SERVICE PERSONNEL ATTENTION POUR PR VENIR LES CHOCS LECTRIQUES NE PAS UTILISER CETTE FICHE POLARIS E AVEC UN PROLONGATEUR UNE PRISE DE COURANT OU UNE AUTRE SORTIE DE COURANT SAUF SI LES LAMES PEUVENT ETRE INSEREES A FOND SANS EN LAISSER AU CUNE PARTIE A DECOUVERT CAUTION TO PREVENT ELECTRIC SHOCK DO NOT USE THIS POLARIZED PLUG WITH AN EXTENSION CORD RECEPTACLE OR OTHER OUTLET UN LESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE CAUTION POWER LINES Any outdoor antenna must be located away from all power lines OUTDOOR ANTENNA GROUNDING if an outside antenna is connected to your tuner or tuner preamplifier be sure the antenna system is grounded sc as to provide some protection against voltage surges and built up static charges Section 810 of the National Electrical Code ANSI NFPA No 70 1984 provides information with respect to proper grounding of the mast and supporting structure grounding of the lead in wire to an antenna discharge unit size of groundi
6. a ee eth out vy foe en nt 0 3dB THD N Rated Output 5 Channel Mode No Delay NINO COWIE u ee ee erringen ae lt 0 008 THD N Rated Output All Modes With Delay VO Ge ee ee regen lt 0 4 Signal to Noise Ratio 5 Channel Mode No Delay Ref to 2 volt A MING jou been end en Sn oda e re gt 95dB Signal to Noise Ratio Ref to 2 volt e Wege aeg E gt 70dB FM Tuner Section x dup MONO EE 1 2 uV 13 dBf Quieting Sensitivity 50dB eie all at et ae cn aco uid M LA t eher 1 7 uV 16 dBf D M ee THERME M MAMMA EE 27 uV 40 dBi Signal To Noise 65dBf A weighted Mono M TT 78 dB Modo CHEM CHEM MM MM 70 dB THD N 1kHz 65dBf i M 0 0596 SS ee ee RE E EE 0 0996 Capture Ratio occ eee EE 1 5dB lemate Channel Selectivity AONE u nenne ne SE gt 75dB Separation 1 KHZ ee cR gt 50dB Frequency Response t0 54B umeseeseesssisssesesssiessissisenssunnntennnsiinnentnnseseessnnsnnnenaserenianannnnnnnnnnn I 30Hz to15kHz AM Tuner Section M ee en en E 300uV m setecuvity CJOKB aan a ee ee ne T gt 40dB Signal To Noise 5mV m A Weighted smt z45dB General Power available in 220V or 240V on special DI em 120VAC 50 60Hz Chassis Dimensions l LLL 4 102mm x 17 432mm x 11 2 292mm Maximum Dimensions esses LLL 4 108mm x 17 432mm x 123 4 324mm M TTE IMEEM M MM 17 Ibs 7 7kg WEINE Packed nee hat sites E disci ee en E EI cut ec 20 5 bs
7. aware of a growing discontinuity between front and rear outputs Eventually you ll perceive the rear channel output as a discrete echo rather as an integral part of a coherent soundfield Of course this is exactly what happens in a large environment like a stadium Thats why ADCOM has included longer delay times in the GTP 600 the additional aural flexibility makes reproduction of some audio video events more realistic Somewhere in the middle of this range of effects time delay has other interesting and useful applications For example longer delay times often give the impression that we are in a large room the longer the delay the larger the apparent space is If we re not particularly concerned with the masking effect we can experiment 15 Telephone inquiries are welcomed from Monday through Friday between 9 AM and 4 PM Eastern Time Please call 732 683 2356 We ll also be happy to answer FAX inquiries sent to 732 683 9792 Please include your phone and FAX number SO we Can respond When inquiring about your unit please include the serial number the name of the dealer from whom you purchased the unit and the date or purchase If we ask you to return the unit to us for service we will issue a specific Return Authorization number for your use UNDER NO CIRCUMSTANCES SHOULD THE UNIT BE SHIPPED TO US WITHOUT PROPER AUTHORIZATION OR PACKED IN ANYTHING OTHER THAN ITS ORIGINAL PACKING If the original packing has been lost d
8. its effectiveness when rolled up or carelessly dropped behind a cabinet etc If the T antenna is undesirable from a functional or decor point of view your ADCOM dealer will be pleased to show you a variety of indoor antennas that might be more appropriate We do suggest however that you ask for a home trial as reception conditions vary enormously from location to location folded dipole The GTP 600 can also be used with a 75 ohm antenna These are usually large roof mounted antennas and can provide superior reception when compared to the 300 ohm dipole In addition most cable companies use 75 ohm cable to distribute FM signals Connect the GTP 600 to a 75 ohm antenna system by terminating the connecting cable with an F connector available at most electronic parts stores and attaching it to the rear panel 75 ohm antenna terminal The grounding schemes used by cable companies are very complex and occasionally cause hum when the cable is attached to the 75 ohm antenna input An isolation transformer again available at most electronic parts stores will usually solve the problem AM ANTENNA The supplied movable ferrite loop will provide reasonable AM reception in most locations The loop should be rotated away from the body of the GTP 600 and some experimentation will undoubtedly improve AM reception In the event that you need better reception you can make your own AM antenna from a single length of insulated wire Con
9. need to ship the unit anywhere in the future 2 PLACEMENT A stable supporting surface is necessary The more massive and firmly anchored the supporting surface is the less likely you ll be to experience any problems 3 POWER OFF Turn off system components before initial installation and connection Remember to give any power amplifiers sufficient time to fully discharge their power supplies before you begin your connections 30 seconds after turn off is usually sufficient CONNECTIONS 4 FMANTENNA The T shaped 300 ohm dipole antenna supplied with the GTP 600 will probably be adequate for most installations After you ve connected the rest of your system and turned it on select Tuner from the Audio Source selectors Then choose FM by pressing the FM AM selector Q until FM appears in the display 5 6 window Tune to an FM station Extend the top of the T antenna and rotate it to the position that results in the best reception Once you ve determined that fasten the antenna to the wall a cabinet back or even the ceiling so that the T is aligned as closely as possible to the direction that gave you the best reception Remember that the dipole antenna is directional it is most Sensitive to signals arriving at right angles to the extended T and relatively insensitive to signals arriving from the ends of the T NIIT NS NN maximum sensitivity TT minimum sensitivit oi n id The dipole antenna rapidly looses
10. this lights when one of the pre programmed stations is chosen B After selecting FM or AM or tune to the desired station by one of the following methods 1 Press one of the Tuning up down arrows Q until the Display amp shows the proper station frequency 2 Enter Seek mode FM only by pressing the Seek manual button Seek appears in the display Then press either of the Tuning up down arrows Q The GTP 600 will automatically advance to the next active broadcast frequency Note Seek is not operative in AM mode 3 Press any of the Tuner Preset buttons to recall preprogrammed station frequencies Of course this works only after you ve programmed your favorite stations Here s how a Tune to the desired broadcast frequency by using either of the methods outlined in B1 or B2 above b Decide what preset you want to assign to that frequency c Hold down the corresponding button until the word preset and that number appears on the right hand side of the display Note that preset positions 1 through 7 are accessed directly simply push the button with the corresponding number To access presets 8 through 14 press the Shift button and then a preset button For example if you want preset number 11 press Shift and then press Preset 4 74 11 If you want preset number 8 press Shift and Preset 1 in that order 74128 Note that the 10 button on the remote is the equivalent of the shift button on the front pane
11. warnings on the unit and in its operating instructions should be adhered to All operating and use instructions should be followed Do not use this unit near water tor example near a bathtub washbowl kitchen sink laundry tub in a wet basement or near a swimming pool The unit should be installed so that its location or position does not interfere with its proper ventilation For example it should not be situated on a bed Sofa rug or similar surface that may block the ventilation openings or placed in a built in installation such as bookcase or cabinet that may impede the flow of air through its ventilation openings The unit should be situated away from heat sources such as radiators heat registers stoves or other devices including amplifiers that produce heat The unit should be connected to a power supply outlet only of the voltage and frequency marked on its rear panel The power supply cord should be routed so that it is not likely to be walked on or pinched especially near the plug convenience receptacles or where the cord exits from the unit Clean unit only as recommended in its instruction manual The power supply cord of the unit should be unplugged from the wall outlet when it is to be unused for a long period of time Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through any openings This unit should be serviced by qualified service personnel when
12. while the diminishing multiple rear channel delays first seen in Cinema mode enhance the sense of spaciousness Left amp right front output Stereo Center channel output No Initial delay setting 50 milliseconds Additional delay choices 75 amp 30 milliseconds 5 NIGHTCLUB synthesizes a smaller and more intimate soundfield ideal for many types of jazz and popular music NIGHTCLUB is also a good choice for playback of classic movies with mono soundtracks Left amp right front output Narrow matrix Center channel output No initial delay setting 15 milliseconds Additional delay choices 30 amp 20 milliseconds 6 5 CHANNEL STEREO sends a mono L R signal to the center channel speaker When no delay is chosen the default choice left front information goes to the left rear speaker and right front data to the right rear speaker If delay is chosen the left and right rear outputs are summed to mono and then sent through the delay line Left amp right front output Stereo Center channel output Yes L R Initial delay setting No delay stereo rear Additional delay choices 100 75 50 30 20 amp 15 milliseconds mono rear 7 2CHANNEL STEREO Bypass This is the what s on the disc is what you get mode No processing no delay and no center channel Obviously this mode is for the serious listener who wants the maximum in stereo music reproduction Here the full audible benefits of ADCOMS proprietary linear gain l
13. 00 watts Remember that large power amplifiers can impose substantial demands on any electrical outlet especially during turn on For your information the proper unit of measure here is the Volt Amp abbreviated VA A Volt Amp is the AC equivalent of a watt However most people use the term watt so we won t confuse the issue We strongly recommend the use of ADCOM s ACE 515 AC line enhancer sequential switcher In addition to providing the convenience and safety of surge protected multiple outlets and dramatically superior RF and EMI filtering the ACE 515 simplifies system turn on and turn off as well Time delay switching protects your speakers from the potentially annoying effects of power transients Check with your ADCOM dealer for details AC LINE FUSE The line fuse is a 1 ampere AGC type It should be replaced only with a fuse of the same type and rating A higher rating or different fuse type will not protect the GTP 600 will void the warranty and may be a fire hazard This fuse DOES NOT PROTECT the AC convenience outlets 10 16 AC LINE CORD This should be plugged into an unswitched outlet providing the appropriate voltage at either 50 or 60 Hz If the unit is without AC power for an extended period of time usually longer than 48 hours station memory and remote turn on features may be affected BASIC OPERATION 17 18 19 VOLUME DOWN POWER ON Avoid unintentional initial high sound levels by turning th
14. THROUGH THE GTP 600 WHEN USING THE BALANCE CHECK CIRCUIT if you need to check balances when playing a source simply put the source on Pause go through the balance check routine then resume playing the source SURROUND and DELAY CHOICES The GTP 600 is an enormously flexible unit This section is the most subjective in the entire Owner s Manual Feel free to take the suggestions here as starting points for your own experimentation Above all enjoy A Choosing the proper operating mode The GTP 600 provides seven operating modes selected by the Surround button on the front panel or the remote controller These are Cinema Dolby Pro Logic Stadium Concert Hall Nightclub 5 channel stereo and Bypass 2 channel stereo Each of the first six modes is indicated by a front panel LED The Cinema mode displays two LEDs one to the left of Cinema and the second to the left of Dolby Pro Logic In Bypass or 2 channel stereo no Mode LED lights 1 CINEMA This ADCOM circuit enhances the dimensional accuracy of Dolby Pro Logic decoding with proprietary signal processing techniques to more closely approximate the acoustical soundfield of a large movie theater A shelving filter with a corner frequency of 7 kHz reduces the often excessive high frequencies that make Some video soundtracks fatiguing to listen to In addition Cinema mode adds diminishing multiple delays through the rear speakers to diffuse the surround informatio
15. ate from a point centered between the front left and front right speakers The final position of the balance knob will vary depending on room acoustics and your listening viewing position VOLUME CONTROL This knob controls a precision 6 segment potentiometer that determines loudspeaker and headphone volume The control features stepless operation for precise gain adjustment The LED located on the outer edge of the knob s front surface glows steadily during normal operation When Audio mute is engaged the LED flashes at 0 5 second intervals as a reminder CAUTION Do not disengage Audio mute while the Volume control is set higher than approximately 10 00 O clock AUDIO MUTE CONTROL This control fully mutes the GTP 600 s main and headphone outputs This is in contrast to most competitive circuits that simply reduce the output by an arbitrary fraction This conventional approach is problematic in that our ears perceive loudness in a relative rather than an absolute way Circuits that simply reduce gain have a different subjective effect depending on the original position of the volume control ADCOM s infinite attenuation circuit has the same subjective effect at any volume control position MONO SWITCH This has several uses As stated before you can decrease the background noise of weaker stereo FM signals by pressing this switch Actually you should first use the High blend button If that doesn t screen enough noise out of the signa
16. e background start with EVERYTHING YOU NEED TO KNOW You ll be rewarded with a much better understanding of how the GTP 600 works and what its capabilities are This unit is rnanufactured under license from Dolby Laboratories Licensing Corporation It is additionally licensed under one or more of the following patents U S number 3 959 950 Canadian numbers 1 004 603 and 1 037 877 Dolby Pro Logic and the double D symbol are trademarks of Dolby Laboratories Licensing Corporation FRONT and REAR PANELS ent in mind We ve arranged the controls in functional groups so We carefully designed the GTP 600 with your enjoym that their use is almost intuitive The rear panel also benefits from the same design goals Take a few moments to familiarize yourself with them You ll find references to the circled ID num bers throughout the rest of this manual GTP 600 FRONT PANEL DIAGRAM jo4ju09 euunjoA joguoo eoue eg onuoo e qeJ o3uoo sseg S10 09 9S BOINOS O9pIA SJ0128Jes BOJNOS OIPNY 608088 ums uj SUOL YOUMS OF Sseg U91IMS OUO A sojoajas Aejeq Jo uo x28uo eoue eg 10129 es epouJ punong 00 0 000000 o SJOJEOIPU 10199168 Wv NJ gat Aejeq epow punouns uonng ylus jasad aun po uo e1nuJ pus q uu nd suoyng jeseid jeu Q e jyo uo e1nuu OIPNY Q mopuim ejdsig suonnq uwop dn Buun yoel suoydpesH Q o apow Buiuni joreoipui 037 o J012e es j enueuu 9es Q wim uos Agpueisjewog o 000000
17. e receivers etc there are many different system configurations Unfortunately it is impossible to cover all of them in this manual Your ADCOM dealer will be pleased to map out the correct connection scheme for your component combination VIDEO MODE SELECTION The GTP 600 will not support both composite video and S video formats simultaneously Choose one or the other and set the rear panel Video Mode switch accordingly CENTER CHANNEL MODE SELECTION The Center Mode switch controls the output to the two center channel preamp outputs A The Normal left position filters bass frequencies below 100 Hz at a rate of 18 dB octave Use this position when you ve chosen a smaller center channel speaker that might not be capable of extended bass reproduction Under these circumstances Normal reduces speaker distortion and improves center channel clarity This position should also be used when the center channel amplifier is of lower power than the amplifiers used for left and right front speakers B The Wideband position sends a full range signal to the center channel amplifier and speaker Use this position when the center channel speaker is acoustically similar to your main left and right speakers and the center channel speaker amplifier combination is capable of extended bass reproduction C Use the Phantom position when you re not using a center channel speaker This position splits the Pro Logic decoder s center channel outp
18. e volume contro down fully counterclockwise before powering the system SOURCE SELECTION and RECORDING The GTP 600 provides extensive recording and cross dubbing capability Any selected source is available at all audio and video recording outputs The only exception to this rule occurs when you are transferring from one recording device to another The GTP 600 automatically blocks for example the output from Tape 1 from appearing at the inputs of the same device This prevents any inadvertent and possibly destructive feedback loops from developing THE TUNER The Tuner section is responsible for processing and amplifying extremely weak signals pulled in by the appropriate antenna ADCOMS refined quartz synthesis technology makes this highly accurate exercise However Using the tuner is a simple process A The Display window provides an instant status check of the following important items 1 AM amp FM signal strength Up to five red LEDs on the left hand side of the display will light depending on signal strength This display can help you find the best location for your antenna the more LEDs showing the stronger the signal 2 FM AM band frequency indicator This is displayed at the center of the window 3 FM Seek mode indicator Appears immediately above the MHz indicator Note that Seek does not function in AM See Section B2 below 4 Preset indicator Located on the far right hand side of the display
19. em installers attention to Article 820 22 of the National Electrical Code that provides guidelines for proper grounding and in particular specifies that the cable ground shall be connected to the grounding system of the building as close to the point of cable entry as practical INTRODUCTION Congratulations on your decision to purchase the ADCOM GTP 600 Surround Sound Tuner Preamplifier You ve made a wise choice The GTP 600 is ADCOM first tuner preamplifier specifically designed for both audiophiles and videophiles who want the finest in home theater flexibility The tuner section uses superbly accurate quartz synthesizer technology for excellent FM and AM reception The preamplifier section derives extensive sonic benefits from ADCOM s exclusive Class A biased linear amplifiers and precision Roederstein 1 metal film resistors in all critical circuit paths The GTP 600 combines advanced Dolby Pro Logic decoding ADCOM s proprietary Cinema enhancement circuit Digital Signal Processing DSP capability video Switching of both standard composite and high definition S video signals on screen display and learning remote A NOTE ON YOUR OWNER S MANUAL In a hurry The QUICK START section will soon have you up and running However we strongly recommend that you refer to the expanded instructions in EVERYTHING YOU NEED TO KNOW to fine tune your System for enhanced enjoyment once everything is working If you re more patient or want mor
20. hookup easier by distinguishing the video signal path from associated audio signals which also use RCA style jacks The S video connections require a multi conductor cable with a 5 pin DIN connector at each end S video s higher definition is due in part to separate transmission and processing of the luminance black and white and chrominance color video signal components and combining them only when needed S video s white clip and dark clip levels are also different ADCOM makes no format recommendations Standard composite video is a surprisingly vivid medium when properly implemented and is far more common S video is not as widely available but does have better resolution capability particularly when S video equipped videodisc players are used as sources TV HOOK UP The TV monitor receiver should be connected to either the GTP 600 s standard composite video or S video monitor output and operated in accordance with the instructions furnished with the TV Generally speaking connect the GTP 600 s Monitor output to the TV s VIDEO input either an RCA jack or an S video DIN socket DO NOT USE the antenna input If your TV has more than one video input choose Read the TV s instruction manual first Hemember to keep the TV switched to the appropriate video input or you won t benefit from the GTP 600 s video switching or on screen display capabilities NOTE With the proliferation of cable boxes VCRs videodisc players satellit
21. ill step through all speakers sequentially beginning with the left front After two seconds of left front output the tone will shift to the center channel B Use the Center level Up Down buttons Dto adjust center channel output to match left channel volume as closely as possible C After approximately two seconds the center channel will mute and you ll hear the test tone through the right front speaker probably at the same level as that of the left channel If this is the case do nothing If there is a substantial difference between left front and right front outputs correct the difference with the GTP 6005 balance control Significant placement differences for left and right front speakers may cause this imbalance Ideally they should be spaced symmetrically on either side of the TV screen If room decor makes this placement difficult or if you prefer to sit off center from the TV screen you may need left right balance correction 27 D The test tone will shift to the rear speakers Use the Rear Level Up and Rear Level Down buttons to adjust rear channel output to match that of the front left center and front right speakers You ll probably need to let the Balance Check test tones cycle through all speakers three or four times until you ve matched levels closely Don t worry about how fast you can accomplish this balance adjustment just take your time and do it carefully NOTE DO NOT PLAY ANY OTHER SOURCE
22. ine amplifier stages and precision Roederstein 1 metal film resistors are obvious Left amp right front output Stereo Center channel output No Initial delay setting None Additional delay choices None Choosing the proper rear channel delay setting Rear channel delay available in Cinema Dolby Pro Logic Stadium Concert Hall Nightclub and 5 channel stereo operating modes is a technique that has been used in consumer audio equipment since the early 70s Sometimes confused with the various quadraphonic technologies briefly popular two decades ago time delay is a much more defined and exact process Briefly stated time delay takes information from the rear or surround output of the decoder stores it for a brief period of time usually less than one tenth of a second and then sends it to the rear speakers While a useful technique to enhance apparent spaciousness and ambience time delay also serves a specific purpose in Cinema and Dolby Surround playback Here proper time delay prevents us from hearing front channel information particularly dialog from the rear speakers Based on a psychoacoustic effect called masking this technique preserves the proper directional clues intended by the source s producer For this reason both Cinema and Dolby Pro Logic modes intentionally limit rear channel time delay to very small amounts If you delay rear channel information for a longer period you lose the masking effect and become
23. ing amp resumes steady operation Note You can delete an entire bank of buttons all command keys associated with a particular Input Selector at once by pressing the appropriate Input Selector again 9 Repeat steps 3 amp 4 as desired 6 Press the Learn key to exit Learn mode Learn LED goes out ADVANCED OPERATION 26 SYSTEM BALANCING Accurate balancing enhances the spatial accuracy of your audio video playback system by matching the acoustic levels of all system speakers in your room as closely as possible Once you ve done this any level differences from left to center or from center to rear etc are differences intended by the creators of the original soundtrack not some unwanted aberration caused by the acoustics of your room EVERY ROOM IS ACOUSTICALLY DIFFERENT AND THE RELATIVE CHANNEL TO CHANNEL LEVELS WILL CHANGE AS YOU MOVE AROUND THE ROOM THIS MEANS THAT YOU SHOULD PERFORM THE BALANCE CHECK WHILE SEATED IN YOUR FAVORITE LISTENING VIEWING LOCATION That s why we ve included the necessary center rear and subwoofer level adjustments ONLY on the RC 65 hand held remote controller A Activate the Balance check circuit Push the Bal check button An internal Signal generator interrupts the normal audio information and sends a test tone to all loudspeakers sequentially The test tone is a filtered broadband signal close in overall balance to the normal distribution of tones encountered in real life The tone generator w
24. iscarded or damaged we will be happy to supply a replacement at nominal charge Please mention your need when you call or write Always ship PREPAID via UPS United Parcel Service or other appropriate carrier FREIGHT COLLECT SHIPMENTS WILL BE REFUSED DO NOT SHIP VIA PARCEL POST as the packaging may not withstand handling by our Postal Service 17 GTP 600 SPECIFICATIONS Preamplifier Section Output Impedance MEIDES cT NER EIERN E PE DEA a d area 475Q Tape OUIBHIS ccs nn ee ee ne 9000 PUDUCESVSL HaIeD u ne ct a ee Ee ER E 2 0V deba NICO MM MM 25kKQ Frequency Response dus 0 0 5dB THD N Rated Output ZDEHZ AG GOKPIZ nes Q SER lt 0 005 v OlStortion CCIF fom AKAZ to 20KH 2 sans alas nne Id nn 0 00596 Signal to Noise Ratio Ref to 2 volt foli ee ee een enden d ES ae de gt 100dB Surround Modes Left Right and Center Channels Line Outputs Frequency Response All Surround Modes Center Channel in Wide Mode UE D M 0 0 5dB THD N Rated Output 5 Channel Mode RR RN COLL T onde ant vets adit ate ect n lt 0 005 THD N Rated Output Dolby Pro Logic Mode TOOEIZIO ZORPIZ aan alee ere cr hy eet PRSE see ce O5 96 Signal to Noise Ratio All Surround Modes Ref to 2 volt NL ee E gt 95dB Rear Channel Line Outputs Frequency Response 5 Channel Mode No Delay A 0 0 5dB Frequency Response All Modes With Delay SO IE NO PN Eee
25. ity when used with the GTP 600 Optional remote sensors either the component styled XR 500 II or the in wall SPM 500 II allow you to fully control the GTP 600 from a number of additional locations in your home Either sensor plugs into the Remote Sensor Extension Complete instructions are included with the XR 500 II and SPM 500 II The IRA 500 also optional repeats infrared command pulses received from XR 500 Il or SPM 500 Il external sensors It should be plugged into either of the Infrared Repeater outputs The triangular end of the IRA 500 should be placed close to the sensor of the non ADCOM component and then secured with the supplied double sided mounting tape The IRA 500 also resolves the dilemma inherent in setting up a technically complete but non intrusive home entertainment system All of the components can be hidden in custom cabinets or closets Aside from a TV screen the only item that needs to be visible is an XR 500 Il or SPM 500 Il external sensor We ll be happy to send you additional information on these units simply call ADCOM s Customer Service Department see the rear of this manual AC CONVENIENCE OUTLETS Certain models only A Switched outlets Make sure that the components plugged into these outlets do not draw in excess of 500 watts You ll find the power consumption of most components marked on the rear panel near the power cord or model number identification B Unswitched outlet Do not exceed 8
26. l All preset numbers are random in that you can assign any preset number to any FM or AM signal In other words preset 1 can be AM presets 2 4 can be FM preset 5 can be AM etc C The High blend button 9 can reduce the background noise sometimes encountered on weaker stereo FM signals The In position also turns off the FM mute circuit and may make it possible to receive very weak signals that would otherwise be ignored by the tuner s circuitry 11 90 21 22 23 24 25 TONE CONTROLS ADCOM s tone controls 9 amp are far more subtle than similar controls on competitive units While conventional controls affect large portions of the midrange in addition to either bass or treble ADCOM s circuits affect only the frequency extremes and leave the critical midrange virtually untouched The benefit is that musical clarity is unchanged even when you select large amounts of tonal compensation For video applications this design has the advantage of not decreasing dialog intelligibility For absolute sonic purity these circuits are bypassed until the Tone in button is pressed BALANCE CONTROL The balance control adjusts for unequal volume levels between the front left and front right channels To use it accurately select the Bypass operating mode no surround mode LEDs lighted Use a mono source or press the Mono switch to the In position and adjust the balance control until the sound appears to origin
27. l try Mono In addition Mono is used whenever you need a monaural signal in Bypass 2 channel stereo mode to properly phase left and right loudspeakers eic THE REMOTE CONTROL Basic operating instructions for the RC 65 hand held controller are on the back of the RC 65 Please refer to them as needed The RC 65 has three operating modes Remote Operation Learn and Delete Command codes for the GTP 600 and ADCOM CD players are already preprogrammed into the RC 65 s non volatile memory These ADCOM specific commands CAN NOT be erased However non ADCOM codes can be programmed into the RC 65 to supersede the ADCOM codes if desired In addition other non dedicated keys can also be programmed This allows you to teach the RC 65 commands for up to eight other components and use it as the remote controller for a complex audio video home entertainment system Of course the RC 65 can also be deprogrammed and then reprogrammed with new commands when you change components A Touse the RC 65 as a dedicated remote controller for the GTP 600 and other ADCOM components follow these instructions 1 Select the desired source by pressing the proper Input Selector button The Transmit LED flashes to confirm 2 Select the desired function for that source by pressing the appropriate command key The transmit LED flashes For example if you want to turn on the GTP 600 select the CD input and start playing disc 4 in a GCD 600 pres
28. lified subwoofer to the Subwoofer output using an RCA to RCA patchcord to the line level or amplifier input of the subwoofer Adjust the Low pass Filter switch in accordance with the instructions supplied with the subwoofer A non amplified subwoofer used with a separate power amplifier should be connected in the same manner Subwoofer output to amplifier input Connect the subwoofer to the amplifier according to the instructions supplied with those units REMOTE EXTENSION ACCESSORIES Connect up to two optional remote control repeater units IRA 500 to the Infrared Repeater outputs if needed Connect the optional remote control sensor XR 500 Il or SPM 500 II to the Remote Sensor Extension according to the instructions supplied with these units es 23 14 15 16 AC CONVENIENCE OUTLETS Certain models only A Switched outlets Plug up to two sources CD player etc into the switched AC outlets These components will receive AC whenever the GTP 600 is ON provided of course that the GTP 600 itself is plugged into a live AC oullet B Unswitched outlet This outlet supplies AC whenever the GTP 600 is plugged into a live AC outlet regardless of whether the GTP 600 is ON or not The unswitched outlet is usually reserved for mechanical devices such as a tape deck that might be damaged if power was inadvertently cut off before the mechanism disengages AC LINE FUSE This socket holds the AC li
29. ls ndino C9plA opne H9 1 sindui CeplA 09plA Piepuejs indu O9plA oipne H 9 1 ndu Z 08PIA 09pl pyepueis indu g 09plA o 0000 0 09 0 9 oipne H 71 sindu C plA COPIA pJepueys indui O9pIA 4 9 1 sindino z eder 4 9 1 s ndu z adel 49 3 sindino ede 4 9 1 sdu ode 4 9 1 sindui GO OMS pow ouueuo 19449 suonoauuoo BUUSWE Wy SUOHODBUUOD euuogjue WJ pesjum WYO 00 uonoeuuoo guusjue NA xeoo wyo GZ jepjou euusiue dooj NV oo 60 0900000 OO 9000000909909000005 090 mi o 0 008 00000000 m 00 00 0000 0000 O9p S OBA Psepueis l bind RE id d kt Ro ge NU is m K e ie T 92 m ooQoooO000ooo oo 7 EE nu TN nov uly nog WE wz uj Meere Iph prapueis GC us Lu ospu 3 GTP 600 REAR PANEL DIAGRAM vsn 91880 fN Ny puno65 U 00 r MWd Us mnes Yuan S sar SL 0 pid 1aleada paul mu NOOO E ETHER Eras IEEE ee FUE RA EGER pu EAS PS sadi EON NC 6000 000 009 o o GTP 600 REMOTE CONTROL DIAGRAM learn J C transmit Learn indicator LED Learn Use mode switch Power On Off Input selectors Numeric keypad Forward Reverse scan CD Surround mode selector Display On Screen Display On Off Check Balance Check On Off Delay selector Rear level set Up Down Center level set Up Down Sub woofer level set Up Down Transmit LED Reset button Audio
30. mute On Off CD player controls FM AM select amp CD disc select FM AM tuning Up Down amp CD track change buttons Master volume Up Down xs learn reset CI U t5 CD tuner tape 1 tape 2 Cf II video 1 video video 3 video 4 6 t i CI C3 060 O c L4 e o O 6000059 Hee RES Ed RANE l 8 600000000060006000000 e QUICK START OUT OF THE BOX 1 UNPACKING Unpack the GTP 600 carefully MAKE SURE YOU REMOVE THE REMOTE CONTROL FROM THE BOX Put the foam inserts and other packing materials back in the carton and save it 2 PLACEMENT Select a stable vibration free location for the GTP 600 as close as possible to your other audio and video components 3 POWER OFF Turn off all the other components in your system This means everything And don t plug the GTP 600 into the AC outlet yet CONNECTIONS 4 FMANTENNA Depending on the antenna you use connect it to either the 75 Ohm terminal 9 or the 300 Ohm screw terminals on the GTP 600 s rear panel The T shaped FM antenna supplied with the GTP 600 is a 300 ohm dipole and should be connected accordingly You ll find it adequate for most installations 5 AM ANTENNA Connect an AM antenna to the Ground and AM screw terminals on the GTP 6005 rear panel The supplied AM loop antenna is sufficient for all but the most difficult reception areas However it must be oriented for best reception 6 7 8 9 10
31. n even further than is possible through Dolby Pro Logic Left amp right front output enhanced Pro Logic matrix Center channel Yes Initial rear delay setting 30 milliseconds Additional delay choice 20 milliseconds 2 DOLBY PRO LOGIC is one of the two preferred modes for properly processing Dolby Surround encoded video soundtracks a growing number of CDs and even the audio portion of some computer games In this mode the GTP 600 presents a spatially correct soundstage with precise lateral imaging and front to back depth Left amp right front output Pro Logic matrix Center channel output Yes Initial delay setting 20 milliseconds Additional delay choices 30 amp 15 milliseconds 3 STADIUM is used for non Dolby Surround encoded material and recreates a large and acoustically reverberant environment well suited for video sporting events and playback of music that is usually performed in large outdoor arenas A slight upper midrange frequency emphasis is added to the front channels to enhance intelligibility STADIUM mode is also well suited for playback of older epic movies with mono soundtracks Left amp right front output Wide matrix Center channel output No Initial delay setting 75 milliseconds Additional delay choices 100 amp 50 milliseconds 14 B 4 CONCERT HALL replicates an indoor performance space that is still relatively large Front channel frequency response is flat for maximum musical clarity
32. n place of the RCA outputs only with an ADlink equipped ADCOM multi channel power amplifier The ADlink interconnect cable automatically assures proper channel continuity from preamp to power amp and reduces the number of interconnect cables needed SUBWOOFER CONNECTIONS The Subwoofer jack supplies a line level output for direct connection to the line input of a powered self amplified subwoofer or the input of a dedicated subwoofer power amplifier The Subwoofer output is a mono L R output right and left front information is combined or mixed before it is sent to the jack The Low pass filter switch changes the characteristics of the subwoofer output The In position filters high frequencies above 100 Hz at a rate of 18 dB octave This is called a low pass filler in that only low frequency information is allowed to pass through The Out position bypasses the filter to send a full range mono signal from the subwoofer jack Itis not good audio practice to send a signal through a series of low pass filters and most self powered subwoofers have an adjustable low pass filter at their input For that reason we suggest that you use either the GTP 600 s filter OR the subwoofers filter but NOT BOTH Read the subwoofer s instruction manual for further information After that you may want to experiment to determine the best sounding alternative REMOTE EXTENSION ACCESSORIES ADCOM s remote control accessories can add enormous flexibil
33. ne fuse In the unlikely event that the AC fuse opens replace it ONLY with a fuse of the exact type and rating A subsequent fuse failure means that your GTP 600 needs service AC LINE CORD Plug the AC cord into an unswitched AC wall outlet so that power to the GTP 600 cant be accidentally interrupted by turning off an AC switch BASIC OPERATION 17 18 19 20 21 22 23 24 25 NOTE This section assumes that you ve set up the rest of your system sources power amplifiers and speakers etc in accordance with the instructions supplied with these units VOLUME DOWN POWER ON Turn the GTP 600 s volume control 9 all the way down fully counterclockwise Turn the unit on by pressing the power switch Then turn the other system components on sources first then power amplifiers SOURCE SELECTION and RECORDING Choose a source by pressing the GTP 600 s appropriate Audio or Video source selectors amp respectively Then operate the source component according to the supplied instructions NOTE Signals from the chosen source are available at all recording outputs This means for example that you can record a CD on a Hi Fi VCR without changing any of the rear panel connections Conversely you can record the audio portion of a video tape on an audio cassette recorder THE TUNER The Tuner button selects the internal AM FM FM Stereo tuner Choose FM or AM by using the FM AM selector button T
34. nect one end of the wire to the terminal marked AM and run the other end to a high location in your home or hang it from a window In most cases a second wire run from the Ground terminal to a solid earth ground a cold water pipe for example will also improve AM reception as well as provide a safe path to ground in the event that lightning Strikes an outdoor AM antenna AUDIO SOURCE HOOK UP Patience and common sense will help you avoid almost all the errors you might make when rushing the initial installation Remember to connect Left Channel to Left Channel and Right Channel to Right Channel etc The jacks on all ADCOM products follow conventional color coding White for Left Channel and red for Right Channel Most interconnect cables observe this general guideline the connectors on each end of the cable are usually color coded We ve received many questions about the sonic attributes of premium interconnect cables We do suggest that you make sure any cable you use is a low capacitance design Most are Your ADCOM salesperson will be happy to make cost effective recommendations based on individual component characteristics and System complexity 7 8 9 10 11 VIDEO SOURCE HOOK UP All of the comments immediately above apply here also especially the references to patience and common sense You ll notice that the standard composite video connections use RCA jacks color coded with yellow inserts This makes
35. nel stereo or surround bypass Each surround mode has a pre programmed delay setting chosen to best complement that mode You may select another by sequentially pushing the delay button amp Note that not all delay settings are available with all surround choices ON SCREEN DISPLAY The on screen display gives an instant status check of selected inputs operating modes delay choices etc Press the remote control s Display button to turn on the display Press it again to turn it off EVERYTHING YOU NEED TO KNOW This section uses the same paragraph numbers as the preceding QUICK START section We hope you find the additional information useful and enjoyable OUT OF THE BOX 1 UNPACKING As part of ADCOM s quality control procedures your GTP 600 was carefully inspected for physical imperfections and electrical performance before it left our plant In the event of physical damage notify your ADCOM dealer immediately and request help in filing a written damage claim THE RIGHT TO A CLAIM AGAINST A COMMON CARRIER CAN BE FORFEITED IF THE CARRIER IS NOT NOTIFIED PROMPTLY IN WRITING AND IF THE SHIPPING CARTON AND PACKING MATERIALS ARE NOT AVAILABLE FOR INSPECTION SAVE ALL PACKING MATERIALS UNTIL THE CLAIM HAS BEEN SETTLED The foam packing and carton were specifically designed to protect your GTP 600 Even though space is often at a premium in today s homes we recommend that you save the packing materials in case you
36. ng conductors location of antenna discharge unit connection to grounding electrodes and requirements for the grounding electrode a Use No 10 AWG 5 3 mm copper No 8 AWG 8 4 mm aluminum No 17 AWG 1 0 mm copper clad steel or bronze wire or larger as a ground wire b Secure antenna lead in and ground wires to house with stand off insulators spaced from 4 6 feet 1 22 1 83 m apart c Mount antenna discharge unit as close as possible to where lead in enters house d Use jumper wire not smaller than No 6 AWG 13 3 mm copper or the equivalent when a separate antenna grounding electrode is used See NEC Section 810 21 j EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL CODE INSTRUCTIONS CONTAINED iN ARTICLE 810 HADIO AND TELEVISION EQUIPMENT POWER LINES R GROUND CLAMP N SERVICE ENTRANCE GONDUCTORS dx STANDOFF INSULATORS b MAST Lad SERVICE ENTRANCE EQUIPMENT ANTENNA LEAD IN WIRE ANTENNA DISCHARGE UNIT c TO EXTERNAL ANTENNA TERMINALS OF RADIO RECEIVER POWER SERVICE GROUNDING ELECTRODE SYSTEM e g interior metal water pipe GROUND WIRE a b GROUND CLAMPS BONDING JUMPER d OPTIONAL ANTENNA GROUNDING ELECTRODE DRIVEN 8 FEET 2 44 M INTO THE EARTH IF REQUIREO BY LOCAL CODES SEE NEC SECTION 810 21 f NOTE TO CATV SYSTEM INSTALLER This reminder is provided to call the CATV syst
37. perating instructions are on the rear of the RC 65 The RC 65 is a learning remote and can be programmed to operate many other components 6 ADVANCED OPERATION 26 SYSTEM BALANCING After you ve physically set up your system use the RC 65 remote controller to balance 27 28 the relative outputs of all speakers to fully enjoy the spatial benefits of Dolby Pro Logic decoding A Verify that you re in Cinema or Dolby Pro Logic mode by making sure that the appropriate LEDs the ones to the left of Cinema and Dolby Pro Logic are lighted If some other mode is indicated press the Surround button front panel or remote until the proper LEDs appear B Activate the Balance Check circuit by pressing the bal check button front panel or remote A test tone that sounds like rushing water will start in the left front loudspeaker C Adjust the center and rear channel outputs so that the sequential rushing water noise is equally loud when heard through each speaker Sit in your favorite chair and use the remote control for this adjustment D Turn off the sequential test tone by pushing the bal check control or again SURROUND and DELAY CHOICES The GTP 600 gives you 7 operating modes to choose from Choose the mode best suited for your source by pushing the front panel or remote Surrou nd button amp B respectively until the LED beside the chosen mode lights 1f no LED is visible you have chosen 2 chan
38. s Power press CD press Play B press Disc then press O and 4 on the numeric keypad Q B To program the RC 65 with commands for other components 1 Place the RC 65 and other remote controller so that the infrared transmitter elements face each other usually this is a top to top position 12 2 Press the RC 65 Learn key to enter Learn mode The Learn LED glows steadily 3 Press the proper RC 65 Input Selector button to identify the corresponding component The Learn LED blinks twice 4 Press the RC 65 command key you wish to program The Learn LED blinks once 5 Press and hold the corresponding key on the other remote until the RC 65 Learn LED blinks twice The Learn LED then resumes steady operation A programming error is indicated by simultaneous operation of Learn and Transmit LEDs If this happens repeat steps 3 through 5 as needed 6 Repeat steps 3 through 5 above for all other desired commands 7 When finished press the Learn key to exit Learn mode The Learn LED goes out C To delete previously programmed commands except non erasable ADCOM commands 1 Press the RC 65 Learn key to enter Learn mode The Learn LED glows steadily 2 Press the proper RC 65 Input Selector button to identify the corresponding component The Learn LED blinks twice 3 Press the RC 65 Reset button The Learn LED blinks continuously 4 Press the RC 65 command key you wish to clear The Learn LED Stops blink
39. ts or the S video Monitor output by using the appropriate cable from the GTP 600 to the corresponding input on the TV Use the same format standard or S video already chosen for other video components If you own an older TV with only an antenna input either screw terminals or an F type connector you will need to purchase an RF modulator at an electronic parts store Check your TV s Owner s Manual for additional information VIDEO MODE SELECTION Set the Video Mode switch to either Standard composite or S video depending on which format you have chosen for video signal transfer CENTER CHANNEL MODE SELECTION Adjust the Center Mode switch to the appropriate position Normal restricts bass information below 100 Hz It is used when a center channel speaker has somewhat limited bass capability Choose Wideband when the center channel speaker amplifier combination is capable of extended bass response 1 Choose Phantom only when a center channel Speaker is not being used PREAMP TO POWER AMP CONNECTIONS Connect the GTP 600 s 5 Main Preamplifier Outputs B to the corresponding power amplifier inputs Remember to maintain proper channel continuity Connect the GTP 6005 right front output to the power amplifier s right front input etc The multi pin ADlink connector simplifies these connections when used with ADCOM 5 or 6 channel power amplifiers SUBWOOFER CONNECTIONS Connect a powered self amp
40. une in the desired station TONE CONTROLS The Bass and Treble controls amp respectively emphasize or decrease low and high frequencies to suit your taste These controls are active only when the Tone in switch Q is depressed A separate Bass EQ switch adds a predetermined amount of bass energy to all signals You may find this particularly convenient to enhance video soundtracks This circuit operates independently of the Tone in switch BALANCE CONTROL The Balance control allows you to compensate for source eccentricities or unusual listening room acoustics by adjusting relative output from the main system speakers If you want more output ftom the right speaker for example turn the control to the right VOLUME CONTROL The Volume control is the master gain control for the entire system Turn it clockwise to increase volume and counterclockwise to decrease volume NOTE The LED on the front panel Volume control glows steadily when in normal operation When the Audio mute switch is engaged the LED blinks AUDIO MUTE CONTROL Push this to fully mute the output The Volume control LED blinks when mute is engaged MONO SWITCH Push this for a mono signal You ll also find this useful to reduce background noise on very weak FM broadcasts P THE REMOTE CONTROL The RC 65 hand held remote controller duplicates all front panel controls t also contains additional controls that are used only from remote locations Basic o
41. ut between both main speakers to synthesize a center channel image Although the Phantom position provides an excellent interim step in creating a home theater system it is somewhat less effective than using a center channel speaker NOTE The center channel speaker is an essential component in a Dolby Pro Logic equipped home theater system It should be placed as close to your TV screen as is physically possible and must be magnetically shielded to prevent image distortion and possible damage to your picture tube In conjunction with Dolby Pro Logic s adaptive matrix decoding the center channel speaker improves coherency by anchoring the soundfield to the screen s image Dialog for example always appears to be coming from your TV regardless of where you re sitting in the room We strongly recommend a center channel speaker Your ADCOM dealer will be pleased to show you suitable choices PREAMP TO POWER AMP CONNECTIONS This is once again a matter of patience and common sense Remember the only real difference between hooking up a two channel stereo music system and a five or six channel home theater system is three or four more channels Take care to observe channel continuity the GTP 6005 right front output should go to the power amplifier s right front input etc 12 13 14 15 The ADCOM ADlink connector duplicates all the separate RCA type preamplifier outputs in one 8 pin DIN style connector Use this connector i
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