Adcom GTP-760 manual

GTP-760 Digital Processing T uner / Preamplifier O WNER’S MANU AL[...]

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Caution — T o prev ent electrical shoc k, do not use the polarized plug with an e xtension cord or receptacle, or other outlet, unless the blades can be fully inserted to prev ent b lade e xposure. Attention — P our prév enir les chocs électr iques ne pas utiliser cette fiche polarisée av ec un prolongateur , une prise de courant ou une autr[...]

A NO TE FR OM ADCOM Thank you and cong ratulations on y our purchase of the ADCOM GTP-760 Digital Processing T uner/Preamplifier . The GTP-760 f or ms the center piece of a tr uly leading edge home theater system. T o deliv er the highest possible performance, ADCOM designers and engineers utilized the most advanced digital signal processing “eng[...]

T ab le of Contents PRELIMINAR Y INFORMA TION ..................................................................... p. 2 Safety Information A Note from ADCOM The ADCOM Protection Plan Unpacking your GTP-760 1.0 PR ODUCT FEA TURES .......................................................................... p. 6 1.1 Front Panel Controls Headphone jack [...]

LD input VCR input and output Video aux input Room 2 output Video monitor outputs Video Processor input and output Video Processor On/Off switch Remote control connections Infrared repeater outputs Remote sensor extension outputs Preamplifier outputs 5.1 Channel inputs AC fuse holder AC power cord AC convenience outlet 1.3 The Remote Control ......[...]

1 . 0 PR ODUCT FEA TURES 1. 1 Front Panel Controls The GTP-760’ s front panel is a model of simplicity . All controls are logically grouped f or easy , intuitiv e operation. F amiliarize y ourself with the f ollowing diagram and read the shor t e xplanations of each f eature. When y ou finish, you will be w ell on your w a y to enjo ying the GTP-[...]

For familiar music CDs (also called PCM signals) the choices are the same as for analog inputs, Dolby Pro Logic , Dolby Pro Logic/Cinema , symphony hall , stadium , jazz club , 5-chan. stereo , and 2-chan. stereo . Because CDs do not carr y Dolb y Digital signals, the Dolb y Digital option is not available and the GTP-760 automatically bypasses tha[...]

1 3 5.1 Channel In Button: This b utton selects the 5.1 channel analog input, which allows the user to enjo y high-resolution, multichannel f or mats such as D VD-A udio and Super A udio CD . This pure analog input completely bypasses any digital conversion or processing to maintain the highest possible audio quality; thus, delay and bass managemen[...]

Composite or S-Video? One of the first system hook-up decisions to make will be which video f or mat to use . While the composite video f or mat is more widely used, S-Video can off er improv ed picture quality . The GTP-760 does not conv er t between the two f or mats. Howe ver , it can sav e the video mode for each input. It is recommended that o[...]

1 8 Antenna connections 1 9 Digital audio/standard (composite) video inputs DV D Digital 2 Digital 1 ( RF ) 2 0 Digital 1 RF Demodulator switch 2 1 12 volt trigger output 2 2 Analog audio/standard (composite) video inputs and outputs LD (laserdisc) inputs VCR inputs and outputs Video aux in Room 2 outputs Video Processor inputs and outputs T ape in[...]

For FM, use either the 75 ohm “F” connector or the 300 ohm “push terminals” depending on what type of antenna you’v e chosen. If you’ re getting FM from a cable system f eed, you will most likely use the “F” connector . The “T” shaped antenna supplied with the GTP-760 uses the push terminals mar ked “300 ohms. ” “T” ante[...]

Video) to the appropriate “dig.2 in” jack. Digital 2 in: This input is recommended f or an audio/video source (DSS receiv er , etc.) with a T OSlink (optical) digital output. Remember that the composite video connection will go to the yellow-center RCA jack immediately under the “dig.2 in” label. Connect the source’ s T OSlink (optical) d[...]

2 1 12 V olt T rigger Output (see illustration on preceding page) T o f acilitate remote tur n-on and tur n-off of other components (power amplifiers , for e xample), this 2.5 mm mini-jack provides a constant signal (12 volts DC) whenever the GTP-760 is fully powered. When the GTP-760 is tur ned off (via the front panel switch) or placed in standb [...]

Video Aux Input: This input is electrically identical to the LD input described above and will accommodate a wide variety of audio/video sources. After selecting and connecting the source’ s composite or S-Video output to the GTP-760’ s corresponding “video aux” video input, connect the source’ s left channel analog audio output to the wh[...]

T ape Inputs and Outputs: These connections are designed for a cassette deck or any other audio recording device with line-level analog inputs and outputs. Follow these instructions: 1) Connect the recorder’ s left channel analog audio output to the GTP-760’ s white “tape in” jack. 2) Connect the recorder’ s right channel analog audio out[...]

2 3 S-Video Inputs and Outputs Note: This section assumes that y ou’v e elected to use S-Video sources and displa y de vices and that you’ve set the GTP-760 for S-Video signal transfer by following the steps described in the boxed note entitled Composite or S-Video? on page 9. When hooking up S-Video capable audio/video components, follow the s[...]

2 4 Video Processor On/Off Switch This switch controls a “video loop” that enables the GTP-760 to function with a separate video processor . F or con v entional home theater systems , mak e sure the “ video processor on/off ” switch is in the OFF position. When using a separate video processor , place this s witch in the ON position. 2 5 Re[...]

2 7 5.1 Channel Inputs These are the multichannel analog inputs. Connect y our D VD- A udio , SA CD or other multichannel source as f ollows: 1) Connect the source’ s “front left” output to the white-centered RCA input mark ed “front”. 2) Connect the source’ s “front right” output to the red-centered RCA input mar ked “front”. 3[...]

2 9 A C Con venience Outlets (115V AC models) These outlets are for lo w-current source components onl y . They are not designed for power amplifiers. The single uns witched outlet is liv e whene v er the GTP-760 is plugged into a liv e A C source. The two switched outlets are live only when the GTP-760 is fully operational (i.e., whenever the fron[...]

3 0 Source selectors main DV D dig.1 (digital RF — digital LD) dig.2 (digital auxiliary) tuner CD VCR v . aux (video auxiliar y) 31 Powe r 3 2 Input selectors 3 3 V olume Up/Down 3 4 T uning Up/Down 3 5 Guide 3 6 Menu 3 7 < (left arrow) 3 8 Up arrow/P ause 3 9 > (right arrow) 4 0 Down arrow/Stop 4 1 Select/Play 4 2 Direct access keypad (“[...]

3 0 Source Selector s (main, D VD , VCR, tuner , v . aux, CD , dig.1, dig.2.) These buttons serve two functions. • First, they switch inputs on the GTP-760 so you can hear the source you’ve just selected. • Second (and e v en more impor tant), the y can change the functions of all the other buttons on the remote controller . In other words, i[...]

4 0 Down arrow/Stop •I n main mode, this is preprogrammed to scroll down to the next choice on a menu screen. •I n CD mode, it is preprog rammed to stop an ADCOM CD pla yer . •I n tuner mode, it is preprogrammed to star t scanning preset frequencies low er than the current station. • The button is programmable for use with any other source.[...]

50 Level trim (Rear Up/Down, Center Up/Down, Sub Up/Down) Rear Up •I n main mode, button is preprogr ammed to increase both rear speaker le vels sim ultaneously . •I n CD mode, button is preprogr ammed to access disc 2 with ADCOM disc pla yer . • The button is programmable for use with any other source. Rear Down •I n main mode, button is p[...]

Remote Function T able This table supplements the inf ormation you’ve just read. Use it to quickly re view b utton functions. The controller’ s capabilities are e xtensiv e and ma y be some what intimidating at first. Howe v er , you will soon find that its logical button arrangement and programming capabilities will greatly increase your enjoy[...]

BUTT ON FUNCTION Main C D T uner All Others 0 Not programmable T rac k 10 Programmable Programmable + 10 Not programmable + 10 Programmable Programmable SHIFT Not programmable C al l Presets 8 - 14 Programmable FM/AM Not programmable Repeat F M o r A M s el e c t Programmable STEREO Stereo mode select Pr og ra m/ Mem. Stereo/Mono Programmable SRND [...]

For tuner functions (changing stations, etc.): 1. Press the tuner source selector button. It will flash red. 2. Press the tuning up (or tuning do wn ) function b utton to change stations. The tuner source selector will flash red to confirm that the function button you’ve selected actually triggers a command. (Again, use the table to see which but[...]

Deleting (clearing) Individual Programmed Commands 1. Press the ADCOM remote’ s source selector and select/pla y buttons sim ultaneously and hold until the orange status LED and the sour ce selector button glo w steadily . 2. Press the function button y ou wish to clear . The status LED will flash continuously . 3. Press the backlight b utton. Th[...]

m1 button is pressed IF main , DV D , dig. 1 , or dig. 2 sources are active at the time y ou select that macro . If you’v e programmed a Group 2 macro , it will send out an identical command sequence whenev er tuner , CD , VCR , or v . aux inputs are active . Programming Macro Initiator Buttons: 1. Press either the Group 1 or Group 2 source selec[...]

3.0 INITIAL SETUP What this section is all about . . . After connecting your home theater , you ma y elect to configure the GTP-760 to the specific speak er arrange- ment and dimensions of your system. The procedures described in this section demonstrate how to use the GTP-760’ s on screen displa y to enter this inf ormation. Once complete, the G[...]

In a typical home theater system, the distance from each speaker to the listening position will be diff erent. The most common e xample: in many home theaters the center and rear speak ers sit closer to the listener than the main speakers. In such a situation the sound emitted from the closer speakers will be heard first. For many movie soundtracks[...]

The speaker size menu allows you to describe the size and number of speakers in your system to the GTP-760. The descriptiv e words LARGE and SMALL that appear in the MAIN field mean the follo wing: LARGE: The speaker is full range and capab le of reproducing the entire audible frequency spectrum 20Hz to 20kHz. The GTP-760 sends a full range signal [...]

3.4 CHANNEL BALANCE F rom the SETUP screen, select CHANNEL BALANCE with the or b uttons and press select/play . Y ou will see: CHANNEL BALANCE LEFT - + RIGHT - + CENTER - + REAR L - + REAR R - + SUB - + UNDO CHANGES DONE Each piece of home theater equipment operates diff erently . In the same system, amplifiers may ha v e diff erent gains, speakers[...]

Second, the subwoofer trim appears in the CHANNEL BALANCE menu, but not during the operation of the noise sequencer . Because the subwoof er operates at a limited frequency r ange and because the sound le vel measurement is weighted, the noise sequencer method of channel trimming is often unreliable in setting the subwoofer level. Using such an app[...]

If you ha ve chosen to use a mix of both Composite and S-Video sources, the VIDEO field of the INPUT SETTINGS menu is the place to set the mode. In the example from section 1.2, a composite VCR and an S- Video D VD are to be used. Select the VCR input of the GTP-760. The VIDEO field should sho w COMPOSITE. Now select the GTP-760 input where the D V[...]

When you are using analog inputs, you will probably need to manually select the proper operating mode. How ev er , the GTP-760 remembers the mode y ou’ve most recently used f or a par ticular input and will automatically restore that mode when you use that input next, software permitting, of course. Y ou can change modes with the men u system or [...]

4.2 The T uner Selecting stations 1 ) Select the tuner input via the front panel or remote control b utton. The inf or mation displa y will show the most recently receiv ed broadcast frequency . 2 ) If the band you w ant (AM or FM) is already displa y ed, proceed to step 3) belo w . If not, push the FM/AM selector to change to the appropriate band.[...]

Listening to “Preset” Stations 1 ) Select tuner and either FM or AM . 2 ) Press the appropriate preset button (or shift + the preset button for choices higher than “preset 7”). 4.3 Room 2 Operation Introduction The GTP-760’ s “Room 2” circuitry gives y ou the ability to simultaneously enjo y two diff erent audio/video sources in two d[...]

Operating Room 2 From “Room 2” In addition to the front panel Room 2 controls, the GTP-760 provides an interface for controlling Room 2 remotely . Such a connection is technically sophisticated and usually intended only for custom installations. Please contact your ADCOM dealer or ADCOM directly f or fur ther information on these advanced featu[...]

Note 1: Cable TV systems can contrib ute to ground loop problems , which in tur n, cause “hum. ” T o deter mine whether your cab le system is the contributing f actor , disconnect the cable TV incoming signal line (the round, 75 ohm cable) bef ore it first connects to y our system. If the hum disappears, y ou should inser t a “75 ohm Ground L[...]

6.0 CARE, MAINTENANCE, and SER VICE CARING FOR Y OUR GTP-760 ADCOM has taken g reat care to ensure y our GTP-760 is as flawless in appear ance as it is electronically . The front panel is a heavy gauge , high-grade aluminum extrusion carefully finished and anodiz ed for durability . The chassis, top cov er , and rear panels are powder-coated hea vy[...]

7.0 SPECIFICA TIONS GTP-760 Preamplifier Section Output Level (Rated) ................................................................................................1.0V Input Impedance .............................................................................................20k Ohms Output Impedance ............................................[...]

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10 Timber Lane Marlboro, NJ 07746 T el: (732) 683-2356 Fax: (732) 683-9790 www .adcom.com (c) 2000 by ADCOM. All rights reserved. Printed in the USA GTP-760/v .1.0[...]