Adcom GTP-740 User Manual

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/DCOM

GTP-740

Digital Processing

Tuner / Preamplifier

OWNER’S MANUAL

This page should be picked up

from any Adcom manual second

page (inside front cover)

SAFETY NOTIFICATION PAGE

This equipment generates and uses radio frequency energy and if not installed and used properiy (that is. in strict accordance with the manufacturer's instructions), may cause interference to radio and television reception. It has been type tested and found to comply with the specifications Subpart J of Part 15 of FCC rules, which are designed to provide reasonable protection against such interference in a residential installation.

However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment on and off, the user is encouraged to try to correct the interference by one or more of the following measures.

• reorient ttie receiving antenna

• relocate the processor with respect to the receiver

• move the processor away from the receiver

• plug the processor into a different outlet so that the processor and receiver are on different branch circuits.

If necessary, the user should consult the dealer or an experienced radio/television technician for additional suggestions. The user may find the following booklet prepared by the Federal Communications Commission helpful; "How to identify and Resolve RadioTV Interference Problems". This booklet is available from the US Government Printing Office, Washington, DC, 20402, Stock No. 004-000-00345-4.

Caution — Use of controls or adjustments, or performance of procedures other than those specified herein may result in hazardous radiation exposure.

Caution — To prevent electrical shock, do not use the polarized plug with an extension cord or receptacle, or other outlet, unless the blades can be fully inserted to prevent blade exposure.

Attention— Pour prévenir les chocs électriques ne pas utiliser cette fiche polarisée avec un prolongateur, une prise de courant ou une autre sortie de courant, sauf si les lames peuvente être insérées à fond sans laisser aucune partie a décourvert.

Explanation of Graphic Symbols

This "lightning flash with arrowhead" symbol is intended to alert the user of the presence of uninsulated "dangerous voltage" within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

The “exclamation point” symbol is intended to alert the user to the presence of important operating and

maintenance (servicing) instructions in the literature accompanying the appliance.

A NOTE FROM ADCOM

Thank you and congratulations on your decision to purchase the ADCOM GTP-740 Dolby Digital Tuner/Preamplifier. The GTP-740 will be the centerpiece of a truly cutting edge Home Theater system. To deliver the highest possible performance, ADCOM designers and engineers utilized the most advanced digital signal processing “erfgines” available, the Motorola 56000 series. The GTP-740 uses both the 56007 and 56009 processors for full 24 bit Dolby Digital decoding and digital bass management. In addition, we chose high precision six channel 20 bit Digital-to-Analog converters for the finest sound.

ADCOM PROTECTION PLAN (USA ONLY) ADCOM offers the enclosed valuable Limited Warranty. Please read the details on the Warranty Card carefully to

understand the extent of the protection offered by the Warranty, its reasonable limitations, and what you should do in order to obtain its benefits. Be sure to verify that the serial number printed on the rear panel matches the serial number on the outer carton. If any number is altered or missing, you should notify us immediately in order to ensure that you have received a genuine ADCOM product which has not been opened, mishandled, or tampered with in any way.

CONCEALED SHIPPING DAMAGE Before your new GTP-740 left our factory, it was carefully inspected for physical imperfections and tested for all

mechanical and electrical parameters as a routine part of ACCOM’s systematic quality control program. This should ensure a product flawless in both appearance and performance. After you have unpacked №ie GTP-740, inspect it for physical damage. Save the shipping carton and all packing material as they are intended to reduce the possibility of transportation damage should your component ever need to be shipped again.

In the unlikely event that damage has occurred, notify your dealer immediately and request the name of the freight carrier so a written claim to cover shipping damages can be filed. THE RIGHT TO A CLAIM AGAINST A PUBLIC 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 BY THE CARRIER. SAVE ALL PACKING MATERIALS UNTIL THE CLAIM HAS BEEN SETTLED.

This unit is manufactured 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 Dolby Digital® are registered trademarks of Dolby Laboratories Licensing Corporation.

PRELIMINARY INFORMATION

.-Safety Information

A Note from ADCOM The ADCOM Protection Plan

Unpacking your GTP-740

p.2

1.0 PRODUCT FEATURES.................................................................................p. 6

1.1 Front Panel Controls

Headphone jack Power button and LED Surround mode button and LED indicators Dialog Enhance button Dynamic Range button and LED indicators Display Window Tuner preset buttons Shift (8-14) button

FM/AM button Seek/Manual button Tuning Down/Up buttons Panel Dim button Audio Mute button

Input Selector buttons and LED indicators

Master Volume control

IR (infrared) sensor

Room 2 button

1.2 Rear Panel Inputs & Outputs ~ System Connections

A Note on Cables

Composite or S-Video?

RCA jack color key

Antenna connections

Digital audio/standard (composite) video inputs

DVD Dig. aux Dig. RF

Dig, RF demodulator bypass switch

12 volt trigger output

Analog audio/standard (composite) video inputs and outputs

LD (laserdisc) inputs VCR inputs and outputs Video aux. inputs

Room 2 outputs Ball System inputs and outputs

Tape inputs and outputs

Video monitor outputs CD inputs

..............

.p9

S-Video inputs and outputs

DVD inputs Dig. aux inputs Dig. RF input LD input VCR input and output Video aux input Room 2 output Video monitor outputs

Ball System input and output Ball System On/Off switch Remote control connections

Infrared repeater outputs

IR mini-jack (infrared sensor) input

Remote sensor extension outputs Preamplifier outputs AC fuse holder AC power cord AC convenience outlet

1.3 The Remote Control

2.0 INSTALLING/CONNECTING THE GTP-740.

2.1 Physical Placement

2.2 Connecting Source Components to the GTP-740

3.0 INITIAL SETUP

3.1 What You Will Need

.......................

...........................................................

.p. 20

.p.30

p.30

3.2 SETUP Screen

3.3 input Settings ,

3.4 Channel Delay Settings

3.5 Speaker Size Settings

3.6 Channel Balance Settings

3.7 Using Balance Check

4.0 BASIC OPERATION..........................................................................p.39

4.1 Tuner

4.2 Room 2

4.3 Operating Mode

5.0 TROUBLE SHOOTING.................................................................p. 43

6.0 CARE, MAINTENANCE, and SERVICE

.................................................

p. 44

7.0 SPECIFICATIONS

........................................................................

p.45

1.0 PRODUCT FEATURES

1.1 Front Panel Controls

The GTP-740's front panel is a study in simplicity as all controls are logically grouped for intuitive operafion. Look at the following diagram and read the short explanations of each feature. When you finish, you will be well on your way to enjoying the GTP-740’s convenience and sound quality.

1 Headphone jack 2 Power button and LED

3 Surround mode button and LED indicators 4 Dialog Enhance button 5 Dynamic Range button and LED indicators 6 Display Window

7 Tuner preset buttons

8 ShK (8-14) button 9 FM/AM button

10 Seek/Manual button

11 Tuning Down/Up buttons

12 Panel Dim button 13 Audio Mute button 14 Input Selector buttons 15 Master Volume control 16 IR (infrared) sensor 17 Room 2 button

Headphone jack: This accepts the stereo 1/4” phone plug connector used by almost all high quality headphones. When you use the headphone jack, the GTP-740's rear panel main line level Preamp outputs are muted. Room 2 outputs are unaffected.

Power Button and LED: Use this button to turn your GTP-740 on and off. When you first push the Power Button to the ON (depressed) position, the center LED will glow yellow until all circuitry stabilizes. When your GTP-740 is ready to use, the LED will turn red.

NOTE: The front panel Power Button must be engaged to use the remote control. If the front panel Power Button is not depressed, the remote control will not have any effect. When the front

panel Power Button is engaged, the remote controller’s “Power” button will cycle your GTP-740 between standby and operation modes. When in standby mode (indicated by the yellow LED), you need to press the remote control’s “Power” button to activate your GTP-740’s circuitry. (The LED will turn red when you do this.)

Surround Mode button and LED indicators: Pushing the button sequentially steps your GTP740 through all the available operatinig modes linked to the selected input.

For example, if you have chosen the DVD input (a digitai input), the Surround Mode button will

step through Dolby Digital, Dolby Digital/Cinema. and Dolby Digital/2-chan. stereo. The LED

immediately to the right of the selected Operating Mode will indicate the current choice. The

Operating Mode button will automatically bypass choices not applicable to the DVD input.

In a similar manner, the Surround Mode button will step through Dolby Pro Logic/CInemaJDolby

Pro Logic, symphony hall, stadium, jazz club, 5-chan, stereo, and 2-chan, stereo sequentially when you’ve selected the CD input. Since no CDs can carry a Dolby Digital (AC-3) signal, that choice is not available.

Dialog Enhance button: A shelving filter with a comer frequency of 7 kHz that reduces the often

excessive high frequencies on some movie soundtracks that make them fatiguing to listen to.

Dynamic Range button and LED indicators: This button, usable only with a Dolby Digital

source, incrementally reduces theaudio track’s dynamic range in four steps (full, 75% , 50%>, and

25%) to allow comfortable listening under a wide variety of conditions. The normal, or default,

position is full.

Although we usually prefer to reproduce a source’s full dynamic range (the difference between

very loud and very soft sounds), we occasionally need to reduce dynamics. For example, when

playing a movie late at night, loud explosions might wake sleeping family members. Simply

turning the volume control down would probably make a whisper in the next scene inaudible. The

Dynamic Range button solves this dilemma by progressively lowering the volume of loud peaks

while increasing the level of softer sounds. This allows you to hear every element of the

soundtrack without disturbing those around you or forcing you to strain to hear delicate nuances. Display window: This shows all the pertinent information you will need to effectively use the

GTP-740 on a daily basis. We carefully designed this window to display only the data you need at the time you need it. The window’s configuration will change as you ask the GTP-740 to do different things. The display normally shows the input you’ve selected. If you’re currently listening to AM or FM radio, the display shows that signal’s frequency. Additional Information appears as needed and we’ll note these appearances in subsequent sections of this manual.

Tuner preset buttons: These buttons (and the Shift button: see # 8 immediately below) allow

quick access to up to 14 preselected AM or FM broadcast frequencies.

Shift (8-14) button; This allows each of the 7 tuner preset buttons to do “double duty.” When the LED in the center of the shift button is illuminated red, the 7 tuner preset buttons activate tuner presets 8-14. When the LED in the center of the shift button is not illuminated, the 7 tuner preset buttons activate tuner presets 1-7.

FM/AM button; As you might expect, this button selects AM or FM. In addition to the selected broadcast frequency, a small “AM” or “FM" indicator appears in the bottom of the Display Window to confirm your choice.

11 Tuning DownAJp buttons: These allow easy selection of all the stations your GTP-740 can

12 Panel Dim button; This reduces Display window brightness for listening or viewing in a dark

13 Audio Mute button; This button lowers levels at the main preamplifier outputs by 20 dB. Press

14 input Selector buttons and LED indicators: These allow easy dioice of any available input.

Seek/Manual button: This controls the tuner’s scan function. In Seek mode (indicated by the word “seek” in the bottom center of the Display window), the tuner

will automatically go to the next active broadcast frequency when you press either of the Tuning buttons (see #11 immediately below.) In Manual mode, the tuner will jump to the next higher or next \ower adjacent frequency when you press either Tuning button, whether or not that frequency is active. For example, if the GTP-740 indicates an FM frequency of 91.1 (MHz) and you press the Tuner Up button, the GTP-740 will display 91.3, the next available frequency. Similarly, if you’re listening to an AM broadcast at

1630 (kHz) and press the Tuning Down button, you will see 1620.

Note: These frequency intervals apply only to North America. Other countries may be different.

receive. Remember that these Tuning buttons will scan to the next active or to the adjacent frequency depending on how you’ve set the Seek/Manual button described above.

room. The button simply toggles between full and reduced illumination.

It again to restore previous levels. Audio Mute does not affect “Room 2” outputs.

When you select a particular input, the LED in the center of that button will light and the input

name will appear in the Display window to confirm your choice. Choosing an input automatically selects the Surround mode last used with that input. You may change frie Surround mode at any

time by using the Surround Mode button (#3 above.)

15 Master Volume control; This rotary knob raises the volume to all active speakers

simultaneously as you turn it clockwise and lowers volume when you turn it counter-clockwise.

16 IR (infrared) sensor: This small window receives invisible infrared commands from the remote

controller. Do not block this window with accessories, cables, CD jewelboxes, etc., or the remote controller will not work.

17 Room 2 button; Pressing this button will activate the Room 2 output circuitry, enabling any of six

analog audio and video sources; LD, VCR, video aux, CD, tape, and tuner. Pressing the

Room 2 button will cause the LED’s on the available source buttons to illuminate. The source that

is currently selected for room 2 will be flashing. Choose the source you want to send to Room 2

by pressing the desired source button, it wili illuminate steadily and the others will go off.

1.2 Rear Panel inputs & Outputs •• System Connections

Like the front panel, the GTP-740’s rear panel is carefully arranged to make hookup, configuration, and use as simple as possible. However, the GTP-740’s extraordinary capabilities take some study to use most effectively. We strongly suggest that you read this section of the manual very carefully before beginning to hook up your system. You will save yourself much time and effort if you carefully think out what you expect from your system; consider the components

you will use, where they’ll be placed, and how you will want them to work together.

A NOTE ON CABLES Different connections require different types of cables. For example, normal analog audio interconnects are not ideal for either digital audio or video signal transfer. Coaxial digital audio cables (those with RCA connectors at each end) should have a characteristic impedance of 75 ohms. Similarly, video cables, both composite and S-Video, should have, a characteristic impedance of 75 ohms.

One question you will need to answer right away is which video signal format—composite or SVideo—you will be using throughout the system. The GTP-740 will handle either equally well but

will not convert from one to ttie other. In general, the composite format Is more widely used,

although S-Video offers significantly better resolution with more advanced sources, especially DVD. S-Video’s advantages decline somewhat with long cable runs. You may want to confer with your ADCOM dealer before deciding on one or the other.

Composite or S-Video?

The GTP-740 is shipped from the factory preset for use with composite video sources and display devices. While set for composite video use, the GTP-740’s on-screen menu is not available at either SVideo monitor output.

If you elect to use S-Video connections, you must set the GTP-740 for this format. You can do this by Using

the menu system (see Section 3 for details), or you can follow these three steps:

1) Turn the GTP-740 off via the front panel power switch. (Do NOT use the remote controller’s “power” button.) (When the unit is fully off, the LED in the center of the power switch will NOT light.)

2) Hold the surround mode button down

3) While continuing to hold the surround mode button down, press the front panel power switch again to activate the GTP-740.

This will switch the GTP-740 from standard (composite) to S-Video mode. For verification, hook your display device to either S-Video “monitor out” (make sure you’ve chosen the S-Video input) and press the “menu” button on the GTP-740’s remote controller. If the SETUP menu screen appears, the GTP-740 is set for S-Video operation.

If the SETUP screen does not appear, recheck all connections. This will probably resolve the problem. However, remember that your dealer may have tested your GTP-740 and already switched it from

composite to S-Video mode.

If this is the case, or if you simply want to reset the GTP-740 for use with composite video components, follow the three steps immediately above to toggle back to the composite video mode. Make sure your monitor is connected to a composite “monitor out” and that the monitor is set for the correct composite input. Press the remote controller’s “menu” button again. You should see the SETUP screen displayed on the monitor.

The diagrams and notes in this section will probably answer most of your questions about interfacing the GTP-740 with other components in your system. You will find more detailed information on initial setup and configuration in following sections of the manual.

18 19

Antenna connections Digital audio/standard (composite) video inputs

DVD

Dig aux DigRF Digital RF Demodulator bypass svfHch

12 volt trigger output

Analog audio/standard

(composite) video inputs and outputs

LD (laserdisc) inputs

VCR inputs and outputs Video aux in

Room 2 outputs

Ball System inputs and outputs Tape inputs and outputs Standard (composite) video monitor outputs CD inputs

26 27 28 29

S-Video inputs and outputs DVD input

Dig Aux input Dig RF input LD Input

VCR input VCR output

Video aux input

Room 2 output

S-Video monitor outputs Ball System input and output Ball System On/Oft switch Remote control connections

Infrared repeater outputs

IR mini jack (infrared sensor) input

Remote sensor extension outputs

Preamplifier outputs

AC fuse holder AC power cord

AC convenience outlets

Note that the GTP-740’s RCA-style jacks have color-coded centers to make connections easier. Use this key to help route cables properly:

YELLOW centers =

BLACK centers

WHITE centers

RED centers

18 Antenna connections: You need to connect different antennas for FM and AM reception.

For FM, use either the 75 ohm “F" connector or the 300 ohm “push terminals” depending on what type of antenna you’ve chosen. If you’re getting FM from a cable system feed, you will most likely use the “P connector. The “T" shaped antenna supplied with the GTP-740 uses the push terminals marked “300 ohms." “T" antennas are directional. They should be placed as high as possible with the arms fully extended. If possible, the arms should be oriented so that they are at right angles to the transmitter.

= =

VIDEO signals (composite)

DIGITAL AUDIO signals

and CENTER CHANNEL and SUBWOOFER PREAMP outputs LEFT CHANNEL ANALOG AUDIO signals RIGHT CHANNEL ANALOG AUDIO signals

antenna

300a-t ground AM

signal direction

transmitter

signal direction

best reception

FM antenna

The supplied AM loop antenna connects to the push terminals marked “ground” and “AM,” respectively. You may need to adjust the position of the antenna for best reception. If you use an outdoor AM antenna, follow the manufacturer’s instructions.

poor reception

to GTP-740 FM antenna connections

transmitter

19 Digital audio/standard (composite) video inputs

Remember that you must choose either standard (composite) or S-Video connections before hooking up source components. This section of the manual assumes you have chosen composite connections. S-Video connections will be handled in a subsequent section.

DVD in: Connect the DVD player’s composite video output to the yellow-center RCA jack immediately under the “DVD in” label.

Connect the DVD player's RCA-style digital output jack to the GTP-740’s black-center RCA jack located under the “DVD in" label.

_________

Note: If your DVD player has only a TOSlink (optical) digital output, you may need to connect it to “dig. aux in." If this is the case, remember to connect the player’s video output (composite or S-Video) to the appropriate “dig. aux in" jack.

Dig Aux In; This Input is recommended for an audio/video source (DSS receiver, etc.) with a

TOSlink (optical) digital output.

Remember that the composite video connection will go to the yellow-center RCA jack immediately under the "dig. aux in" label.

Connect the source’s TOSlink (optical) digital output to the GTP-740’s TOSlink socket located under the "dig. aux in" label.

Dig RF in: We recommend this input for laserdisc players with a digital RF output. It is the only

input on the GTP-740 equipped with the RF demodulator needed to process a laserdisc’s Dolby Digital encoded soundtrack.

Connections follow the same pattern detailed in “DVD in" and “Dig. aux in” above.

Connect the laserdisc player’s composite video output to the yellow-center RCA jack immediately under the “dig. RF” label, then connect the player’s coaxial digital output to the black-center RCA jack under the “dig. RF in” label.

20 Digital RF Demodulator bypass switch

(see illustration on preceding page)

This switch adds flexibility to the GTP-740. If you play laserdiscs with Dolby Digital-encoded

soundtracks, put this switch in the IN position. This places the demodulator circuit in the signal

path and allows proper Dolby Digital decoding.

If you do not have a laserdisc player with a digital RF output, place the switch in the OUT position.

You can then use this input in exactly the same way as you would use the DVD input.

21 12 volt trigger output

(see illustration on preceding page) To facilitate remote turn-on and turn-off of other components (power amplifiers, for example), this

2.5 mm mini-jack provides a constant signal (12 volts DC) whenever the GTP-740 is fully powered. When the GTP-740 is turned off (via the front panel switch) or placed in standby mode (via the “power” button on the remote controller), the jack has no output.

22 Analog Audio and Standard (Composite) Video inputs and outputs

LD (laserdisc) inputs:

Use these inputs as you have already used the digital source inputs (see #19 above.) After selecting and connecting the laserdisc player’s composite video output to the GTP740’s yellow-center RCA jack immediately under the “LD in" label, connect the player’s left channel analog audio output to the white RCA jack under the “LD In” label. Then connect the player’s right channel analog audio output to the “LD in" red RCA jack.

VCR inputs and outputs;

(see illustration on preceding page)

Because you will use your VCR to record as well as play, take care to follow these instructions carefully.

1) Connect the VCR’s composite video output to the GTP-740's yellow-center RCA jack immediately under the “VCR in" label.

2) Connect the VCR’s composite video input to the GTP-740's yellow-center RCA jack immediately under the “VCR out” label.

3) Connect the VCR’s left channel analog audio output to the GTP-740's white “VCR in"

jack.

4) Connect the VCR’s right channel analog audio output to the red “VCR in" jack.

5) Connect the VCR’s left channel analog audio input to the GTP-740’s white "VCR out”

jack.

6) Connect the VCR’s right channel analog audio input to the red “VCR out” jack.

Note: You may want to use so-called “AA/ combination" patch cords to make this step less confusing. Sold under a variety of names, these combination cables usually include a video conductor and two audio conductors in one cable assembly. If you elect to use them, make sure that they support the video format (composite or S-Video) you’ve chosen for your system.

Video aux input: (see illustration on preceding page)

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-740’s corresponding “video aux" video input, connect the source’s left channel analog audio output to the white RCA jack under the “video aux in" label. Then connect the SQurce’s right channel analog audio output to the red RCA jack under the “video aux in" label.

Room 2 outputs:

These outputs supply video

and audio signals for

distribution to a secondary area or room in your home.

Room 2 features are

covered in a separate

section of this manual.

Connect the composite Room 2 video output to the video display device (TV or video projector) in the

remote area. Make sure the cable(s) you use for this connection are high quality and well shielded as long cable runs act as antennas for unwanted interference signals. (Depending on the distance between the GTP-740 and the display device and, to a lesser extent, the video format you’ve chosen, you may need

a video distribution amplifier to make sure the signal arrives at the display device properly. Consult your ACCOM dealer for additional information if needed.)

Connect the white “Room 2 ouf jack to the left channel input of the amplifier used to power speakers in the remote area. Then connect the red “Room 2 out” jack to the amplifier’s right channel input.

Ball System inputs and outputs:

These connections allow easy interface with ACCOM’s unique “Ball System,” the BOS500 home theater controller. Note that the BOS-500 processes video signals only so you don’t need to concern yourself with any audio connections between it and the GTP-740.

(For additional information, consult the BOS-500 manual.)

Connect the BOS-500’s composite video output to the GTP-740’s yellow-center “Ball System in" jack. Then connect the BOS-500’s composite input to the GTP-740’s yellow-center “Ball System ouf

jack.

If you are using the GTP-740 with the Ball System, make sure you’ve set the Ball System switch correctly.

Tape inputs and outputs:

These connections are designed for a cassette

deck or any other audio recording device with linelevel analog inputs and outputs.

Follow these instructions;

1) Connect the recorder’s left channel analog audio output to the GTP-740’s white “tape in” jack.

2) Connect the recorder’s right channel analog audio output to the red “tape in” jack.

3) Connect the recorder’s left channel analog audio input to the GTP-740’s white “tape out” jack.

4) Connect the recorder’s right channel analog audio input to the red “tape out" jack.

standard (composite) video monitor outputs;

CD inputs: (see illustration on preceding page)

These line-level analog inputs allow easy connection of a CD player (or other two channel analog audio source.)

Follow these instructions:

1) Connect the CD player’s left channel analog audio output to the GTP-740’s white “CD in" jack.

2) Connect the CD player’s right channel analog audio output to the red “CD in” jack.

23 S-Video inputs and outputs

Note: This section assumes that you’ve elected to use S-Video sources and display devices exclusively and that you've set the GTP-740 for S-VIdeo signal transfer by following the steps described in the boxed note entitled Composite or S-Video? on page 9.

Connect the main monitor or display device to the yellow-center RCA jack

under the “standard monitor 1” label. You may use the "standard monitor 2” jack for another monitor if desired. Properly connected, either monitor will then display an image from a video source or on-screen menu information when appropriate.

DVD <Sg.»ux <Sg.RF LD

in in in in

video aux moni2

in out

VCR video eux momS

in out in out

S-video monitor

1 2

When hooking up S-Video capable audio/video components, follow the steps outlined in Sections

19 and 22 above. However, ignore the instructions for composite video connections and substitute the following:

DVD in: Connect the DVD player’s S-VIdeo output to the mini-DIN connector under the S-Video

“DVD in" label.

Dig. aux in: Connect the source’s S-Video output to the mini-DIN connector under the S-Video

“dig. aux in” label.

Dig. RF in: Connect the source’s S-Video output to the mini-DIN connector under the S-Video

“dig. RF in” label.

LD in; Connect the LD player’s S-Video output to the mini-DIN connector under the S-Video

“LD in” label.

VCR in: Connect the VCR's S-Video output to the mini-DIN connector under the S-Video

“VCR in” label.

VCR out; Connect the VCR’s S-Video input to the mini-DIN connector under the S-Video

“VCR out” label.

Video aux in: Connect the source’s S-Video output to the mini-DIN connector under the S-Video

“video aux in” label.

Room 2 output; Connect the video display device to the S-Video mini-DIN output under the

“room 2 out” label.

S-Video monitor outputs: Connect the main monitor or display device to the mini-DIN jack

under the “S-Video monitor 1" label. You may use the “S-Video monitor 2” Jack for another monitor if desired. Properiy connected, either monitor will then display an image from a video source or on-screen menu information when appropriate.

Ball System input and output: Connect the BOS-500's S-Video output to the mini-DIN jack

immediately under the “ball sys in" label. Then connect the BOS-500’s S-Video input to the mini-DIN jack under the “ball sys ouf label.

24 Ball System On/Off switch

This switch controls a “video loop" that enables the GTP-740 to function seamlessly with ADCOM’s Ball System controller.

For conventional high performance home theater systems, make sure the “ball sys on/off switch is in the off position. When using the Ball System controller, place this switch in the on position.

Remote control connections

remote sensor

Infrared

repeater

mini lack

extension

© © ©

Infrared repeater: These mini-jack outputs transfer command codes received from either the IR

mini-jack or remote sensor extension inputs to an IR repeater located close to other system components. IR signals received at the GTP-740’s front panel IR receptor are

NOT available at the infrared repeater outputs. IR mini-jack: This input receives IR command codes from remote sensors. Remote sensor extension inputs: These inputs receive signals from ADCOM’s XR500II and

SPM500II remote control sensors.

26 Preamplifier outputs

These are the GTP-740’a main outputs,

channel as follows;

1) Connect the white-center RCA output marked “front L(eft)" to the amplifier channel designated for the left front loudspeaker.

2) Connect the red-center RCA output marked “front R(ight)" to the amplifier input designated for the right front loudspeaker.

3) Connect the white-center RCA output marked “rear L(eft)” to the amplifier input designated for the left rear loudspeiaker.

4) Connect the red-center RCA output marked “rear R(ight)” to the amplifier input designated for the right rear loudspeaker.

5) Connect the black-center RCA output marked “center" to the amplifier input designated for the center channel loudspeaker.

6) Connect the black-center RCA output marked “subwoofer" to the amplifier input (in

most cases, the line-level input of a powered subwoofer) designated for the subwoofer.

Note: There are two subwoofer outputs (1 & 2.) They are in parallel (i.e., each produces

an identical signal) and may be used interchangeably. We've included these outputs to

make it easier to add a sepond subwoofer, if desired.

AC fuse holder

This holder provides easy access to the AC line fuse if that fuse needs replacement. To gain access to the fuse, insert a Phillips head screwdriver and turn counterclockwise. After replacing the fuse, reseat the holder by turning clockwise until the holder is firmly seated.

Connect each to the proper amplifier or amplifier

When replacing the fuse, ALWAYS use one of equal value (for domestic models use an FSOOmA, 250V fuse available at any electronic parts store.) NEVER use a fuse of higher value. If the fuse fails again, consult your ACCOM dealer or call the ADCOM Service Department directly.

28 AC power cord (115VAC models)

Make sure to seat this cord firmly in an unswitched wall socket to provide uninterrupted power to the GTP-740. When removing the cord from an AC socket, NEVER pull on the cord itself.

Instead, grasp the plug firmly and remove it from the socket. You may need to “rock” the plug

lightly for easier removal.

28a AC power cord receptacle (export models)

This I EC-standard socket accepts a wide variety of AC power cords.

29 AC convenience outlets (115VAC models)

These outlets are for low-current source components only. They are not

designed for power amplifiers.

'“The single unswitched outlet is live whenever the GTP-740 is plugged into a live AC source. The

two switched outlets are live only when the GTP-740 is fully operational (i.e., whenever the front power button’s LED is red.) They are not live when the GTP-740 is in standby mode (when the LED is yellow.)

Observe the wattage limitations printed above the two switched and one unswitched outlets. Note that the 500VA figure (equivalent to 500 watts) above the two switched outlets is a maximum figure for both outlets combined. Do not exceed this limit.

We strongly recommend the use of our switched power line conditioner, the ADCOM ACE515, for systems with substantial amplifiers and many source components. In addition to relieving the GTP-740 from handling large current surges, the ACE-515 protects your entire system by filtering and conditioning the AC current. In addition to numerous heavy duty AC outlets, the ACE-515 includes sequential power-up and power-down modes to minimize “thumps” whenever you turn your system on or off.

_____________________________________

1.3 The Remote Control

30 Source selectors

main DVD

*-VCR

tuner

V. aux (Video auxiliary)

CD d. RF (digital RF) ~ digital LD

d. aux (digital auxiliary) 31 Power 32 Input selectors 33 Volume Up/Down 34 Tuning Up/Down 35 Guide

36 Menu 37 < (left arrow)

38 Up arrow/Pause

39 > (right arrow)

40 Down arrow/Stop

41 Select/Play 42 Direct access keypad

(“1" through “10” and “+10”) 43 Shift 44 FM/AM 45 Stereo

46 Srnd (surround) 47 Enter 48 d. (dynamic) range 49 dialog

50 Level trim

Rear Up/Down Center Up/Down

Sub Up/Down 51 Bal. chk (balance check) 52 Dim 53 Ml, M2. M3. M4 (Macro keys) 54 Room 2 55 Backlight 56 Mute

■ [ I power |1

tlune^

digital LD

IC®] GH

The ADCOM universal remote controller is preset to operate most GTP-740 functions (MAIN device mode), GTP-740 AM/FM tuner functions (TUNER device mode) and GCD-700/750 CD functions (CD

device mode.)

30 Source selectors (main, DVD, VCR, tuner, v. aux, CD, d. RF, d. aux.)

These buttons serve two functions.

First, they switch inputs on the GTP-740 so you can hear the source you’ve just selected.

Second (and even more important), they can change the functions of all the other buttons on the remote controller. In other words, if you first push the DVD device selector, the remote's select/play button generates a command code for your DVD player. If you then press the d. aux device selector, the same select/play button would send a different command code that

might, for example, start your mini-disc player. (Of course, this all depends on how you programmed the remote in the first place. Don’t worry—we’ll cover that shortly.)

32 Input selectors (tape, LO)

33 Volume Up/Down

34 Tuning Up/Down

Power

• In main mode (after you’ve pressed the main device selector), this is preprogrammed to turn the GTP-740 on and off.

In tuner mode, it is also preprogrammed to turn the GTP-740 on and off.

The button is programmable for use with other sources.

In main mode, these are similar to the source selectors described above but they switch only GTP-740 inputs. They DO NOT automatically change the functions of other remote buttons.

These buttons are programmable for use with other sources.

In main mode, these buttons are preprogrammed to raise and lower the GTP-740’s master volume level accordingly.

They are programmable for use with other sources.

In tuner mode, these buttons‘are preprogrammed to scan up or down the GTP-704’s AM or FM band.

They are programmable for use with other sources.

Guide

This is intended for easy call-up of cable or satellite program guides.

Button is programmable for use with any source.

In main mode, this is preprogrammed to call up the GTP-740’s SETUP menu system. (A subsequent push will exit the menu, regardless of wrtiich menu screen you are in.)

It is programmable for use with any source.

(left arrow)

In main mode, this is preprogrammed to step through the various choices you might wish to select while a menu item is highlighted. In CD mode, it is preprogrammed for audible reverse scan with an ADCOM CD player The button is programmable for use with any other source.

38 Up arrow/Pause

• In main mode, this is preprogrammed to scroll up to the next choice on a menu screen.

• In CD mode, it is preprogrammed to pause an ADCOM CD player.

• In tuner mode, it is preprogrammed to start scanning preset frequencies higher than the current station.

• The button is programmable for use with any other source.

39 > (right arrow)

• In main mode, this is preprogrammed to step through the various choices you might wish to select while a menu item is highlighted.

• In CD mode, it is preprogrammed for audible forward scan with an ADCOM CD player

• The button is programmable for use with any other source.

40 Down arrow/Stop

In main mode, this is preprogrammed to scroll down to the next choice on a menu screen. In CD mode, it is preprogrammed to stop an ADCOM CD player.

In tuner mode, it is preprogrammed to start scanning preset frequencies lower than the current station. The button is programmable for use with any other source.

41 Seiect/Play

In main mode, this is preprogrammed to enter a selection chosen via the menu system.

In CD mode, it is preprogrammed to start an ADCOM CD player.

The button is programmable for use with any other source.

45 Stereo

Direct access keypad (buttons “1” through “10,” and “+10”)

• in tuner mode, buttons “1” through “7” are preprogrammed to access preset stations.

• In CD mode, buttons are preprogrammed as track access commands for the ADCOM CD

• The buttons are programmable for use with any other source.

Shift

• In tuner mode, button is preprogrammed to access presets 8 through 14 (“Shift” + “2" =

• In CD mode, button is preprogrammed as “call” command for ADCOM CD player.

• The button Is programmable for use with any other source. FM/AM

• In tuner mode, button is preprogrammed to switch between FM and AM bands.

• In CD mode, button is preprogrammed as “repeat” command for ADCOM CD player.

• The button is programmable for use with any other source.

player.

preset number 9, etc.)

In tuner mode, button will change playback from Stereo to Mono. In CD mode, button is preprogrammed as “program/memory” command for ADCOM CD player. The button is programmable for use with any other source.

46 Srnd (surround)

In main mode, button is preprogrammed to step through GTP-740's various operation modes. In CD mode, button is preprogrammed to initiate random play with ADCOM CD player.

The button is programmable for use with any other source.

47 ' Enter

• In tuner mode, button is preprogrammed to select “manual” or “seek” tuning modes.

• In CD mode, button is preprogrammed as “time” command for ADCOM CD player.

• The button is programmable for use with any other source.

48 d. (dynamic) range

• In main mode, button is preprogrammed to adjust dynamic range of Dolby Digital encoded sources.

• In CD mode, button is preprogrammed to access disc 1 with ADCOM CD player.

• The button is programmable for use with any other source.

49 dialog

• In main mode, button is preprogrammed to call up or cancel “dialog enhance” equalization.

• In CD mode, button is preprogrammed to begin and end “A-B" repeat with ADCOM CD player.

• The button is programmable for use with any other source.

50 Level trim (Rear Up/Down, Center Up/Dowm, Sub Up/Down)

Rear Up

• In main mode, button is preprogrammed to increase both rear speaker levels simultaneously.

• In CD mode, button is preprogrammed to access disc 2 with ADCOM disc player.

• The button is programmable for use with any other source.

Rear Down

• In main mode, button is preprogrammed to decrease both rear speaker levels simultaneously.

• In CD mode, button is preprogrammed to clear “repeaf command with ADCOM disc player.

• The button is programmable for use with any other source.

Center Up

• In main mode, button is preprogrammed to increase center channel speaker level.

• in CD mode, button is preprogrammed to access disc 3 with ADCOM disc player.

• The button is programmable for use with any other source. Center Down

• In main mode, button is preprogrammed to decrease center channel speaker level.

• The button is programmable for use with any other source.

Sub Up

• In mam mode, button is preprogrammed to increase subwoofer level.

• In CD mode, button is preprogrammed to access disc 4 with ADCOM disc player.

• The button is programmable for use with any other source.

.*Sub Down

• In main mode, button is preprogrammed to decrease subwoofer level.

• The button is programmable for use with any other source.

Bal. chk (balance check)

• In main mode, button is preprogrammed to initiate balance check procedure with test tone and BALANCE CHECK menu screens.

• In CD mode, button is preprogrammed to access disc 5/Memory Clear with ADCOM disc player.

• The button is programmable for use with any other source.

Dim

In main and tuner modes, button is preprogrammed to dim GTP-740’s information display. The button is programmable for use with any other source.

Ml, M2, M3, M4 (Macro keys) Ml

• In main mode, button is preprogrammed to select Tape 2 input (not applicable to GTP-740.)

• The button is programmable for use with any other source. M2

• In main mode, button is preprogrammed to select Video 4 input (not applicable to GTP-740.)

• The button is programmable for use with any other source. M3 and M4

• These buttons are programmable for use with any source.

Room 2

• In main mode, button is preprogrammed to select a Room 2 source.

• The button is programmable for use with any other source.

Backlight

• No programming capabilities. Button backlights all keys for eight (8) seconds when pressed. Mute

• In main, tuner, and CD modes, button is preprogrammed to mute outputs of device.

• The button is programmable for use with any other source.

Remote Function Table

This table supplements the information you’ve just read. Use it to quickly review button functions. The controller’s capabilities are extensive and you may be somewhat intimidating at first. However, you will soon find that its logical button arrangement and programming capabilities will greatly increase your enjoyment as you discover the ease with which you can operate your entire system from just one remote!

Look down the left-hand column until you see the button you want to learn about. Then look under MAIN to see if it is preprogrammed for a GTP-740 function, under CD to see what CD commands are preprogrammed, and under TUNER to see all preprogrammed tuning functions.

BUTTON

FUNCTION

Main CD

MAIN

Selects MAIN

DVD Selects DVD None None VCR Selects VCR Nòne None TUNER

Selects TUNER in None None

V.AUX Selects VIDEO AUX None None

CD Selects CD

D. RF

D. AUX

POWER TUNING + TUNING -

VOLUME +

Selects DIGITAL RF None None Selects DIGITAL AUX None None Power On/Off & Macro

Not programmable Not programmable

Master volume up

None

Programmable

None

Power On/Off Disc Skip + Tuning + Disc Skip - Tuning Volume up

Master volume

VOLUME -

Master volume down

Volume-

Master volume

down

TAPE LD GUIDE MENU

EXIT

DELAY

Selects TAPE Selects LD

Not programmable

On-screen display

Not programmable

Sets rear chan, delay

Programmable Programmable Programmable Programmable Programmable

'Track reverse

Track forward Polarity Open/close

Programmable

drawer

UP/PAUSE

DOWN/STOP OSD scroll down

< > SELECT/

OSD scroll up Pause

Stop Preset Scan -

OSD left select

Search reverse

OSD rioht select Search forward OSD “Enter" command

Play

Preset Scan +

Programmable

PLAY

2 3 4 5

6 7 8 9

Not programmable Not programmable Not programmable Not programmable Not programmable Not programmable Not programmable Not programmable Not programmable Not programmable

Track 1 Track 2

Preset 1

Preset 2 Tracks Preset 3 Track 4

Preset 4 Track 5 Preset 5 Tracks Preset 6 Track 7 Track 8 Track 9 Track 10

Preset 7

Programmable

Tuner

All Others

None None None None None None None

Programmable Programmable Programmable Programmable

Programmable

Programmable Programmable

Programmable Programmable Programmable Programmable Programmable

Programmable Programmable Programmable Programmable Programmable Programmable Programmable Programmable Programmable Programmable

+ 10 SHIFT

FM/AM STEREO SRND

ENTER D. RANGE REAR + CENTER + SUB + BAL. CHK

DIALOG REARCENTER SUBDIM

Not programmable Not programmable Not programmable

Stereo mode select Surround mode select

Not programmable

Dynamic range adjust Disc 1

Rear level up Center level up Subwoofer level up Disc 4 Balance check Disc 5/

Dialog enhance on/off

Rear level down Center level down Subwoofer level down Dim display

Ml For Macro use M2

M3 M4 ROOM 2

MUTE

For Macro use For Macro use For Macro use For Macro use For Macro use For Macro use

For Macro use

Room 2 source select

Mute volume Mute volume

+ 10 Call Repeat Program/Mem. Random play Time display

Disc 2 Disc 3

Programmable

Presets 8-14 FM or AM select Stereo/Mono

Programmable

Seek/Manual

Programmable Programmable Programmable Programmable Programmable Programmable Programmable Programmable Programmable

Memory clear

A-B repeat

Clear repeat

Programmable Programmable

Programmable

Programmable Programmable Programmable Programmable Programmable Programmable Programmable. Programmable

Dim Display

For Macro use For Macro use

For Macro use

Programmable

For Macro use

Programmable

Mute volume

Programmable Programmable Programmable Programmable Programmable Programmable

Programmable

For Macro use For Macro use For Macro use For Macro use

Programmable ProgrammaUe

PROGRAMMING YOUR ADCOM REMOTE CONTROLLER Introduction

The ADCOM universal remote controller operates eight different audio/video components. As you’ve already seen, it’s preprogrammed to control ACCOM’s GTP-740 Preamp/Tuner and the GCD-700 CD player. In ¿ddition, K has five “component 'memory banks” available so you can program the remote to

learn commands for your DVD player, satellite box, laserdisc player, VCR, etc. This lets you use one remote controller for your entire system.

Using Preprogrammed Commands

Using the remote controller’s preprogrammed commands is simple. For most GTP-740 functions (volume up/down, changing surround modes, etc.), follow these easy steps.

Press the main source selector button. This tells the remote that you want to use GTP-740 preprogrammed commands. The main button will flash red to tell you it understands.

Press the appropriate function button (volume up, volume down, etc..) If you’ve selected a button

that actually triggers a GTP-740 command, the main button will again flash red to confirm your choice.

If the main button does not flash, you’ve selected a function button that isn’t preprogrammed. (Review the table above to see which buttons are preprogrammed.)

For tuner functions (changing stations, etc.):

1. Press the tuner source selector button. It will flash red.

2. Press the tuning up (or tuning down) function button to change stations. The tuner source selector wfil flash red to confirm that the function button you’ve selected actually triggers a command. (Again, use the table to see which buttons are preprogrammed.)

Press the CD source selector first to access preprogrammed commands for ADCOM CD players.

Note: You can program new commands over the preprogrammed commands in tuner and CD if you wish.

However, you cannot program any buttons, even those unprogrammed with GTP-740 command codes, while you're in main mode. This safety feature assures you that you will always be able to fully enjoy the GTP-740*s capabilities._______________________________________________________________________

Programming Your Own Commands You can supplement preprogrammed commands with commands to operate other components. Before

you begin to follow these steps, note the status LED located at the top left comer Just above the remote’s

button panel: It will flash red, orange, or green to signal particular functions as you enter new commands

into your ADCOM remote.

Begin by dedding which source component’s commands you will be transferring to the ADCOM remote. Then press the appropriate source selector button. For example, if you’re teaching your ADCOM remote commands for your DVD player, press the DVD source selector first. You can “teach” your remote new

commands for any function button (except backlight) after you’ve selected DVD, VCR, TUNER, V.AUX,

CD,D.RForD.AUX.

1. Place the source component’s remote “head to head” with the ADCOM remote. They should be in line with each other about 2 to 3 inches apart.

2. Press the ADCOM remote’s appropriate source selector and select/play buttons simultaneously. Hold both buttons until the statuì LED turns orange and the source selector button glows red. Both indicators should remain lit.

3. Decide which function button on the ADCOM remote you want to learn a new command. Press it. The orange status LED will begin to flash and the source selector LED will go out.

4. Find the corresponding button on the source component’s remote. Press and hold it until the status LED on the ADCOM remote flashes green once and remains green until the button on the source remote is released. Once the button on the source remote is released, the status LED will start flashing orange again.

5. Verify that the ADCOM remote has learned the new command by pressing and holding the same button on the source remote. The ADCOM remote’s status LED should flash green twice and then go back to steady orange. This indicates successful programming. Release the button on the source remote.

Repeat Steps 2 through 5 for any other commands you want to teach your ADCOM remote for that source component.

Save the commands you’ve just programmed into the ADCOM remote by pressing and holding the appropriate source selector and select/play buttons simultaneously. Hold until the status LED and

source selector LED flash twice and then go out. Repeat these steps for any other source commands

you wish to program.

Deleting (clearing) Individual Programmed Commands

1. Press the ADCOM remote’s source selector and select/piay buttons simultaneously and hold until the orange status LED and the source selector button glow steadily.

2. Press the function button you wish to clear. The status LED will flash continuously.

3. Press the backlight button. The status LED will then flash green twice and then revert to steady orange. The source selector button will continue to glow.

Repeat steps 2 and 3 for any other command you wish to delete for the same source component.

4. Exit “delete mode” by pressing and holding the source selector and select/play buttons simultaneously. The orange status LED and the source selector button will turn off.

Deleting all the Programmed Commands for one Source Component

1. Press the ADCOM remote’s source selector and select/play buttons simultaneously and hold until the orange Status LED and the source selector button turn on and remain lit.

2. Press and hold down the backlight button. The red Status LED and the Device button will flash five times, the Status LED will then flash green twice and turn to a constant orange, indicating that all the learned information for the device mode selected has been erased.

3. To exit this feature, press and hold the ADCOM remote’s source selector and select/piay buttons simultaneously. The orange status LED and the source selector button will flash twice and then turn off.

Deleting all the Programmed Commands for every Source Component

Note: This procedure erases every programmed command accessed under the DVD. VCR. TUNER. V.AUX. CD. D.RF and ti.AUX input

selectors. Make sure you really want to do this before foliowing the step

below.

1. Press and hold the CD input selector and the light button simultaneously. The red status LED will flash twelve times. The status LED will then flash green once, followed by a single orange pulse. M LEDs will then turn off, indicating that every learned command in the ADCOM remote has been erased.

Macro Commands

Introduction

“Macro” commands are simply a series of individual commands initiated by pushing just one button. The ADCOM remote can learn up to 10 individual commands and store them as a single macro.

There are five “macro initiator” buttons on the ADCOM remote: power, m1, m2, m3, and m4. Each “macro initiator” can store and transmit either of two complete macros, depending on which source

selector is active when you push it.

For macro programming purposes, think of the source selectors as being in two groups: main, DVD. VCR,

and tuner in Group 1; v. aux, CD, d. RF, and d. aux in Group 2. When you program a “Group 1" macro,

you will start by pushing the main source selector. After you’ve completed and memorized that macro command series, you can initiate it whenever you’re in main, DVD, VCR, or tuner modes. Similarly, you

will program “Group 2“ macros by pushing v. aux first and can use them whenever the v. aux, CD, d. RF,

or d. aux inputs are active.

For example, if the m1 button is programmed in Group 1 mode to turn on the TV, turn on the audio

receiver, turn on the VCR, and then turn on the satellite receiver, it will perform the same series of commands whenever the m1 button is pressed IF main, DVD, VCR, or tuner sources are active at the time you select that macro. If you’ve programmed a Group 2 macro, it will send out an identical command

sequence whenever v. aux, CD, d. RF, or d. aux inputs are active.

Programming Macro Initiator Buttons:

1. Press either the Group 1 or Group 2 source selector button (main or v. aux respectively) and the mute button simultaneously. Hold both buttons until the red status LED and the input selector button remain lighted.

2. Press the macro initiator button (power, ml, m2, m3 or m4) you wish to program.

3. Select and press up to 10 buttons you wish to store in the macro. Both source selector and function buttons count as individual commands. Remember that each maao can hold only up to 10 individual commands.

4. Press the tuning up button to save the macro. The red status LED and input selector button will blink twice to confirm programming and then turn off.

Please note:

• To add a power (on/off) command to the macro, use the mute button in place of the power button.

• The tuning up/down buttons cannot be used in a macro sequence.

Programming main volume “punch through”

This particular macro command is very useful. It allows you to adjust the main volume (volume up, volume down, and mute) regardless of which source selection is active. In practical terms, this means that you will be able to adjust the GTP-740’s volume without first pressing main—even if you’re in VCR

mode at the time! Remember that you will need to program the remote individually for each source you

think you will use this “punch through” feature with.

1. Press the appropriate source selector and mute buttons simultaneously and hold until both the red status LED and source selector button remain lighted.

2. Press the volume up button.

3. Press the main source selector. The red status LED and the source selector button you pressed in Step 1 will blink twice to confirm successful “punch through” programming and then turn off.

Example; If you wish to have the GTP-740's master volume controls operate in the VCR mode, you would press the VCR source selector button in Step 1 and the main source selector button in Step 3. If you

want the same convenience while in DVD mode, select DVD in Step 1, etc.

Reversing main volume “punch through”

You can revert to normal volume control operation by erasing the “punch through” command. Do this by following these steps:

1. Press the appropriate source selector and mute buttons simultaneously and hold until both the red status LED and source selector button remain lighted.

2. Press the volume up button.

3. Press the same source selector as you chose in Step 1. The red status LED and the source selector button will blink twice to confirm that you've erased the “punch through" command.

2.0 JNSTALLING/CONNECTING THE GTP-740

2.1 Placement Your system components need a stable, vibration-free supporting surface. Your ADCOM dealer will be

pleased to show you many different types of audio/video equipment racks and cabinets. Keep the GTP740 (and other audio/video components) away from moisture and out of direct sunlight.

Bear in mind that the GTP-740's rear panel is the central connecting point for almost every component in your audio/video system. Leave sufficient room behind the rear panel to accommodate cables, antenna leads, power cords, etc. We recommend a minimum of 5” of free space behind the GTP-740 for maximum flexibility.

The GTP-740’s contrd and processing circuitry benefits from several advanced microprocessors. These devices generate signals that occasionally interfere with other components. To avoid this, place the GTP740 on a separate shelf if at all possible with space above and below frie unit for better isolation. In

addition to providing optimum heat dissipation, this also allows easy access to the rear panel to check

connections or reconfigure your system if you desire.

2.2 Connections ' , Section 1.2 above has already provided the information you need to successfully connect all the

audio/video components you will need for a sophisticated home theater system. Your ADCOM dealer wiif be pleased to assist you should you required detailed answers to more advanced system configuration questions.

3.0 INITIAL SETUP

What this section is all about...

After connecting all the components in your home theater system to the GTP-740, you will need to spend

some time configuring it to best serve your needs. Although this might seem to be a daunting task at first, the GTP-740’s on-screen menu system and the following step-by-step instructions will easily guide you through the process.

Remember, all you’re really doing is telling the GTP-740 what’s connected to it, what it’s connected to. and some things about your speakers and room. The GTP-740’s advanced microprocessors will digest this

information and adjust its internal circuitry accordingly.

3.1 What You Will Need

1) Decide which video format (composite or S-Video) you will use. After you’ve made that choice, follow the instructions in the box titled Composite or S-Video in Section 1.2 to make sure your GTP-740 is

set properly.

2) Connect your monitor to the appropriate “monitor output” on the GTP-740. Turn your monitor on, verify that it is receiving a signal by pressing the remote controller’s “menu” button. Once you see the on-screen menu’s main screen, you’re ready.

3) Make sure you have a sound level meter handy if you have access or wish to purchase one.

Although you can calibrate the GTP-740 surprisingly well using your ears alone, we strongly suggest a sound level meter for greater accuracy. TTie Radio Shack meter (catalog # 33-2050) is both inexpensive and reasonably precise. Other sound level meters offering improved accuracy and flexibility are available. In general, we find meters with digital readouts less satisfactory for calibration work as the continuous scale of an analog readout gives a more useful picture of sound level variations.

3.2 SETUP Screen (Main menu screen)

In composite video mode, all menu screens will show white copy against a blue background. The highlighted choirs will show black letters against a light gray rectangle.

If you’ve selected S-Video mode, all screens will show white copy against a dark gray background. Highlighted choices show as black copy against a light gray rectangle.

After you’ve connected your monitor to the GTP-740 and turned both units on, press the remote controller’s menu button once. The following screen will appear;

SETUP

1 INPUTSETTINGS 2 CHANNEL DELAYS 3 SPEAKER SIZE 4 CHANNEL BALANCE 5 EXIT

This screen is the first step in configuring your GTP-740 to best serve your needs. It provides quick access to all other menu choices.

Input settings should be highlighted. If it is not, use the remote controller’s Up/Down arrow buttons to move the cursor to INPUT SETTINGS and press the remote’s Select button.

3.3 INPUT SETTINGS Screen

This screen shows;

Note that the first five menu items (INPUT through DYNAMIC RANGE) contain additional information. MODE, DIALOG ENHANCE, AND DYNAMIC RANGE are keyed to the input identified at the top of the screen and are the default settings for that input. You can change these settings within limits for later recall but remember that the GTP-740’s *Auto SelecT feature may override your choices under certain conditions.

• INPUT identifies the input in use when you called up the menu system.

INPUT SETTINGS

INPUT: VIDEO; MODE: DIALOG ENHANCE: DYNAMIC RANGE: LEVELS MENU

UNDO CHANGES DONE

• VIDEO tells you which video mode (composite or S-Video) you’ve already selected.

• MODE indicates the operating mode (stereo. Pro Logic, etc.) currently associated with the

chosen input.

• DIALOG ENHANCE selects a proprietary midrange equalization curve designed to reduce relative high frequency content of very “brighf sources.

• DYNAMIC RANGE indicates the level of compression currently selected. (Note: This applies only to digital inputs receiving a Dolby Digital-encoded signal.) Choices are Full, 75%, 50%, and 25%.

The remaining menu items are:

• LEVELS MENU: This works in conjunction with the CHANNEL BALANCE adjustments (# 4 on the main SETUP screen) and the circuitry initiated by pressing the “bal. check” button on the remote controller. Our suggestion is to avoid the LEVELS MENU saeen entirely for the

present other than to make sure that all the indicators are centered. If you need to center the indicators, use the Up/Down arrow buttons to scroll to the appropriate indicator, and then center It with the < or > buttons. Once all indicators are in the middle of their respective scales, scroll down to DONE and press Select to exit to the SETUP screen.

• UNDO CHANGES discards any choices you may have just made, maintains previously

chosen settings, and returns you to the main SETUP screen.

• DONE preserves the changes you’ve just selected for future use and returns you to the main SETUP screen.

Highlight INPUT if necessary (the Up/Down arrow buttons) and press either the < (left arrow) or > (right arrow) buttons to scroll to the input you want to modify. (Wait about 2-3 seconds after pressing < or >. This gives the GTP-740’s microprocessor array time to reset and check all system parameters.)

When you’ve selected the input, the screen displays the currentiy selected defaults associated with that input. For example, you might see;

INPUT SETTINGS

INPUT: TUNER VIDEO; COMPOSITE MODE: 2 CHANNEL DIALOG ENHANCE: OFF DYNAMIC RANGE: N/A LEVELS MENU

UNDO CHANGES

DONE

This tells you that selecting the TUNER input (from the front panel or remote) will automatically “call up” 2 channel operating mode with dialog enhancement Off. Note that dynamic range adjustment is not possible.

You may change any parameter by highlighting it with the Up/Down buttons and using < or > to scroll through the available choices. For example, you can elect one of the following modes as the default for the TUNER input:

2 channel (stereo) Cinema EQ (with Dolby Pro Logic)

Dolby Pro Logic (no Cinema EQ) Hall surround Stadium surround

Jazz surround

5 channel surround (enhanced stereo)

These choices are not consistent from input to input. Dolby Digital, for instance, is not available when you’ve selected TUNER, because TUNER is an analog input. In this way, the GTP-740 protects you from

making inappropriate choices

Note: If you change video formats, the menu screen will disappear. Do not panic. Just press

Once you’ve adjusted the default parameters for all inputs to your satisfaction, highlight DONE and press the Select button, this memorizes your choices and takes you back to the main SETUP screen.

3.4 CHANNEL DELAY Screen

The term “delay” is often misunderstood. Conventional surround sound systems routinely

delay the sound going to the rear channels for a few thousandths of a second (a few milliseconds - abbreviated “mS”) to enhance the apparent directionality of various effects. In addition, the GTP-740 allows you to calibrate center channel delay.

either the < or > button to restore the screen.

Based on a psychoacoustic principle called the “Haas effect,” properly implemented rear channel delay reduces our “acoustic confusion” about the origin of sounds. Rear channel delay is particularly important with “matrix” surround decoding (Dolby Pro Logic for

example) because even the best matrix circuits “leak” front channel information to the

surround channels. Center.channel delay compensates for conditions where the two main speakers and the

center channel speaker are at slightly different distances from the listening/viewing position.

Although discrete delivery systems like Dolby Digital are not as dependent on precisely

calibrated rear channel delay, the GTP-740 follows proper protocol and shifts rear channel delay settings automaticaliy as you select Pro Logic or Doiby Digital processing.

This will greatly increase your enjoyment of the enormous variety of surround-encoded •

software available today.

From the SETUP screen, highlight CHANNEL DELAYS and press Enter. You will see the following screen;

CHANNEL DELAYS CENTER 0 mS

REAR 0 mS UNDO CHANGES

DONE

If “N/A” shows to the right of CENTER or REAR, change inputs to DVD (or another input where Dolby

Digital is the default operating mode) by pressing the appropriate button on the GTP-740's front panel or

remote controller.

Highlight CENTER with the Up/Down buttons and then select the proper delay setting with the < or > buttons.

* '*

Setting Proper Center Channel Delay

For optimum performance, a single impulse from the front speakers should arrive at the prime listening position at the same instant. Of course, that requires that the front speakers are all placed at equal distances from the prime listening/viewing position (PLP.) This is rarely the case, since the center channel speaker is usually closer to the PLP than the main left and right speakers. This would mean that sound from the center speaker would arrive at the PLP before the impulse from the main left and right speakers and confuse the front soundfield.

To prevent this from happening, we can delay the center channel signal in the GTP-740 before it reaches the center channel output. Since sound travels roughly 1 foot every millisecond (or every thousandth of a second), we can easily calculate optimum delay by measuring the distance from the main speakers to the PLP and then comparing that to the distance between the center channel speaker and the PLP. The difference in these two measurements is the proper delay setting.

For example, if your main speakers are 15 feet from the PLP and the center channel speaker is 12 feet, the difference is 3 feet. The corresponding center channel delay is 3 milliseconds (15-12=3.)

The GTP-740 delays center channel output up to 5 milliseconds and thus compensates for center channel speakers that are up to 5 feet closer to the PLP than the main left and right speakers.

In rare system setups, the center channel speaker is actually farther away from the PLP than the main left and right speakers. In these cases, set the center channel delay to 0 mS.

Next, adjust rear channel delay time by highlighting REAR with the Up/Down buttons and using < and > to choose the appropriate setting.

The principle here is the same. Measure the distance from the rear speakers to the PLP and compare it to the distance you've already measured from the main

left and right speakers to the PLP. Note the difference and use that as your rear

channel delay setting.

For example, if your rear speakers are 9 feet from the PLP, the correct delay

setting would be 6 milliseconds (15-9=6.)

Again, if the rear speakers are farther away from the PLP than the main speakers, set delay to 0 mS.

When DELAY settings are completed to your satisfaction, highlight DONE and press Select to return to the SETUP screen.

__________________________________________

Setting Rear Channel Delay

________________________

3.5 SPEAKER SIZE Screen

In the SETUP screen, highlight SPEAKER SIZE and press Enter.

You will see:

SELECT PRESET should be highlighted. If not, use the Up/Down arrows. The < and > buttons will cycle

through Preset 1, Preset 2, and Preset 3. For the moment, select “1."

Most surround controllers allow only one speaker configuration. This is logical,

since you will rarely switch speakers once your system is installed and calibrated.

However, the GTP-740 provides three presets to ailow you to custom-configure

the same system to optimally reproduce both music and video soundtracks.

SPEAKER SIZE

SELECT PRESET: 1

MAIN: LARGE

CENTER: ON

REARS: ON SUBWOOFER: ON

UNDO CHANGES DONE

Why Different Speaker Size Presets?

For example, if you use your system primarily for music reproduction, you might configure Speaker Size Preset 1 for Targe” main speakers with the rear channels and subwoofer off. For video viewing, you will probably want rear speakers and the subwoofer on. Speaker Size Preset 2 gives you №e ability to quickiy choose tiiis combination when apprq|}riate. We’ve provided Speaker Size Preset 3 for ' your convenience. Use it as you will.____________________________

After selecting the proper Preset, scroil down to MAIN. Use the < and > buttons to select either LARGE or SMALL. Choose LARGE when your main speakers are full bandwidth designs with good bass capability.

Choose SMALL when your main speakers are smaller *satellite” designs or lack deep bass output. (If

you're not sure what to choose here, your ADCOM dealer will be happy to advise you.) After you’ve configured your MAIN outputs, scroll to CENTER and choose ON or OFF. For most users,

choose ON if your system has a center channel speaker. However, if you’re configuring a Speaker Size Preset specifically for two-channel music reproduction, you may want to select OFF.

After you’ve configured your CENTER output, scroll to REAR and choose ON or OFF. For most users, choose ON if your system has REAR channel speakers. However, if you’re configuring a Speaker Size Preset specifically for two-channel music reproduction, you may want to select OFF.

Scroll to SUBWOOFER and repeat the process described above: ON activates the GTP-740’s Subwoofer output, OFF mutes it.

After completing all choices, scroll to DONE and press Enter. This will save the configuration and return you to the SETUP screen.

_______________

Remember that UNDO CHANGES allows you to exit the configuration process at any time without memorizing any changes you might have just made. Scroll to UNDO CHANGES and press Select to return to the SETUP screen.

Note: You may want to repeat these steps for Preset 2 and Preset 3. Just follow the steps above but make sure you’ve chosen the proper PRESET prior to choosing a different configuration. If you don’t, the new choices will overwrite those you’ve previously made.

3.6 CHANNEL BALANCE Screen

Proper system calibration (i.e., adjusting the relative output of all speakers to compensate for system and placement variations) is an essential step if you wish to enjoy a movie soundtrack or other multi-channel sound source as the director, producer, or sound engineer intended.

Channel balancing (or “calibrating") a system simply means adjusting the GTP740’s main outputs to compensate for speaker level differences caused by varying amplifier sensitivities, speaker efficiencies, and speaker placement—all the possible variations

except those inherent in the software you will be playing .

The GTP-740 gives you several ways to adjust channel balance.

• The first is with the LEVELS MENU adjustments accessed from the SETUP menu screen. As weVe already pointed out, we suggest that you not use this initially. It adjusts levels of the main front (left and right) speakers simultaneously and of both rear speakers simultaneously. Although this has advantages in certain situations, it is not ideal here.

• The next is with the CHANNEL BALANCE screen. See below for details.

• Another Is by using the remote controller's bai. chk button. This is the preferred

mediod for initial calibration.

• The last is by using the rear, center, and sub Up/Down buttons on the remote.

These are intended for “on the fl/; corrections for some perceived shortcoming in

the source you're currently enjoying!

Why Do I Need To Balance Channel Output?

From the SETUP screen, select CHANNEL BALANCE with the Up/Down buttons and press Enter.

You will see:

CHANNEL BALANCE

LEFT

+ RIGHT CENTER REARL REARR -

SUB

UNDO CHANGES

DONE

LEFT will be highlighted. The < and > arrow buttons will decrease and increase LEFT channel level respectively. When you’ve completed this adjustment, scroll to RIGHT and, once again, use the < and > arrow keys until the RIGHT level is satisfactory. Continue through CENTER, REAR L, REAR R, and SUB.

When you’re satisfied with the relative levels, scroll to DONE and press Select. This will commit the changes to memory and exit to the SETUP screen. NOTE: Although this screen allows individual channel adjustments, it is not ideal for initial calibration. If you’re using the GTP-740 for the first time, we suggest you use

the remote controller’s bal. chk button to begin the initial calibration. The reason for this

is that the bal. chk procedure turns on the GTP-740’s internal test tone generator and automatically steps that test tone through all six outputs.

3.7 Using bal. chk

The remote controller’s bal. chk button is the easiest way to calibrate the GTP-740. Once your system is connected and functioning, press the bal. chk button. You will see the following screen:

BALANCE CHECK

LEFT CENTER RIGHT REARR -

REARL -

SUB

UNDO CHANGES DONE

You will hear a Vaterfall” test tone advancing from speaker to speaker. You will also see the highlight bar automatically advandng through LEFT, CENTER, RIGHT, etc., in synchronization with the test tone.

Before making any adjustments, place your sound level meter as closely as possible to ear height at your favorite listening/viewing position. (Most sound level meters have a threaded connection on the bottom for a camcorder or camera tripod that may help you do this.) The meter should be “free standing;" avoid putting it close to reflective surfaces (including your own body) as reflected sound waves will reduce reading accuracy.

When using a sound level meter, set it to "Slow" response (to better average continuous readings), "C" weighing (the *C" scale is more accurate for the type of

measurement you need to do), and adjust the "range" setting to 80 dB.

Adjust the GTP-740’s master volume control until the sound level meter registers approximately 80 dB as the test tone cycles through the channels. (Don’t be concerned about variations here—once you’re done calibrating, they won’t be there any longerl)

+ + + + +

_________________

Wait until the test tone cycles to the LEFT speaker and verify that you’ve got an 80 dB reading. (If not,

use the master volume control to increase and decrease the test tone volume as necessary.) When the test tone cycles to the CENTER speaker, use the remote controller’s < and > arrow buttons to adjust center channel level until you get an 80 dB reading. (You will notice that the test tone will not cycle to the RIGHT speaker until you’ve completed adjusting the CENTER output.) Repeat this procedure for every channel.

Points to Remember:

• The test tone automatically cycles to the next speaker every three seconds UNLESS

you use the < and > buttons to adjust levels. (You will also notice that pressing some

other buttons on the remote controller will temporarily delay this advance.)

• You will probably need several passes until you've equalized levels. Don't be concerned about this—it’s normal. Once you’ve brought each channel’s level close to 80 dB, one or two more passes will even things out and ensure precise balancing.___________________

When you’ve completed channel balancing, press the bal. chk button again. Both the test tone and the

BALANCE CHECK screen will disappear and the levels you’ve just selected will be memorized. This completes the initial level calibration.

4.0 BASIC OPERATION

4.1 The Tuner Selecting stations As we have already explained in Section 1.1, using the tuning controls to receive your favorite FM

and AM broadcasts is a simple process.

- 1) Select the tuner input via the front panel (# 14) or remote control (# 30) button. The information display will show the most recently received broadcast frequency.

2) If the band you want (AM or FM) is already displayed, proceed to step 3) below. If not, push the FM/AM selector (#9 on the front panel, #44 on the remote) to change to the appropriate band. .

3) Choose your preferred tuning method (seek or manual) by pressing the front panel seek/manual button (# 10).

While in “seek” mode, the tuning buttonS’(front panel #11, rempte # 34) will take you to the next

active frequency. In “manual" mode, the tuning buttons wiil step to the next available frequency even if it is unused.

4) Use the tuning buttons to select the station you wish to listen to.

Programming “preset” stations.

The GTP-740 can memorize up to 14 AM and 14 FM signals for instant recall. Place your favorite

stations in memory by:

1) Select either FM or AM as described above. Note the stations you want to preset. Starting at the lowest end of the frequency range (88.1 for FM, 520 for AM), tune to the first station you

want to program into memory.

2) Press the preset 1 button (# 7 on the front panel, # 42 on the remote) and hold it for approximately three (3) seconds. (Remember to push the remote’s tuner source selector before using the keypad.) When you see “Preset 1” appear in the information display and the LED in the preset 1 button light, that frequency is memorized.

3) Tune to the next desired frequency and follow the same instructions but use “Preset 2” to commit this new broadcast frequency to memory.

4) Continue for all presets up to and including the seventh.

5) Setting presets 8 through 14 require the use of the shift button.

• Select the desired frequency for preset # 8. Press shift and then hold preset button 1 for three seconds. When you see “Preset 8” appear in the information display and

the LED’s in the front panel preset 1 and shift buttons light, that frequency is memorized.

• Select the frequency for preset # 9. Follow the instructions above but substitute

preset button 2 in place of preset button 1. (Remember that the shift button adds a “7” to the nominal preset button value. Thus, shift + 2 actually means “Preset 9” and so on.)

• Continue as above until all 14 presets are used or until you run out of “favorite" stations, whichever comes first.

6) Select the other broadcast band (AM or FM) and begin programming again. Follow the instructions above. When you're finished, you’ll be able to listen to any of these favorite frequencies by pushing just one or two buttons.

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”).

3) Enjoy.

4.2 Room 2 Operation Introduction

The GTP-740’s “Room 2” circuitry give you the ability to simultaneously enjoy two different

audio/video sources in two different areas of your home. For instance, you can watch a DVD movie in the main family room while someone else enjoys a satellite broadcast or CD in the bedroom.

Full “Room 2" capability requires an infrared sensor and a reliable data link between that sensor and the GTP-740. Consult you ADCOM dealer for details and assistance if necessary.

Selecting a “Room 2” source

Note: Although you can select a “Room 2” source from the GTP-740’s front panel, you probably

won’t want to do this very often. The preferred, and far more practical, method is via the remote

control link between whatever area of your home you've designed “Room 2” and the GTP-740

1) Press the room 2 button (# 17 on the front panel, #54 on the remote) once. The LED in the center of the room 2 button will light to tell you that “room 2” capability is on.

2) Press the room 2 button again. The LED’s in the center of the six front panel analog source selectors will light to show you that you can route any of those sources to the GTP-740’s “Room 2” outputs. If one of the six source LED’s blinks, that source is already selected for room 2 distribution. If no LED blinks, no source is currently selected. {Hole: You cannot direct a digital source - DVD, digital RF, or digital aux — to the Room 2 outputs.)

3) Choose the source you wish to direct to the room 2 outputs by pushing one of the lighted source selectors. The LED’s in the other source selectors will go out and the name of the source you’ve just chosen for room 2 distribution will briefly appear in the information display window. After five (5) seconds, the display will change to show the room 1 (main) source but the room 2 LED will still glow, indicating that a room 2 source is now active.

4) You can verify the room 2 source selection any time "room 2” capability is active (i.e., any time the room 2 LED is illuminated) by simply pressing the room 2 button again. You’ll see ail six analog source selector LED’s light. The active room 2 source LED will blink and the name of that source will show in the information display. You’ll have ten (10) seconds to change the room 2 source by simply pressing any other illuminated source selector.

Setting “Room 2” playback volume

You can change “room 2” volume only by using the remote control. There is no way to adjust “room 2" playback level from the GTP-740’s front panel alone.

Although you can use the remote to adjust “room 2“ volume while still in the main listening/viewing area, that does not serve a useful purpose as you wont have an easy way to Judge the remote location’s volume.

1) Press the remote control's main source selector once. This makes sure the remote is ready to generate GTP-740 command codes.

2) Press the room 2 button twice to access the room 2 mode.

3) Use the remote control’s volume up/down buttons within ten (10) seconds of pressing room

2. The front panel display will show room 2 level changes as you make them and will then revert to normal display mode ten (10) seconds after the GTP-740 receives the last volume adjust command.

Remember that you can construct remote control “macros" to automatically put you in “room 2’ command mode. You should always have a second remote controller in the “room 2" location and that controller can be easily configured with specific room 2 command streams (those beginning with a command for main source selection followed by two “room 2" pulses) for easy operation.

4.3 Operating Mode Selection The GTP-740 features several operating modes — Dolby Digital, Dolby Pro Logic, 5 channel

stereo, several “enhancement” modes, etc. — designed to present music and movie soundtracks as realistically as possible. In addition, some of these modes add the ability to “custom tailor” the GTP-740’s spatial presentation to better suit individual tastes.

You’ll need to understand these modes — Dolby Digital, Cinema, Dolby Pro Logic, Symphony Hall, Stadium, Jazz Club, 5 channel stereo, 2 channel stereo — to get the most out of your GTP-

740.

However, selecting the proper mode can be difficult, particularly when increasingly popular digital formats like DVD present an often-bewildering array of soundtrack options. For this reason, the GTP-740 features automatic mode selection (or “Auto Select”) to analyze digital input signals and process them properly. (Auto Select works only with digital input signals.)

When you are using other inputs, you will probably need to manually select the proper operating mode. However, the GTP-740 remembers the mode you’ve most recently used for a particular input ^nd will automatically restore that mode when you use that input next, software permitting, of course.

You can change modes with the menu system or with the surround mode button (# 3 on the front panel or # 46 on the remote) when you wish to.

The GTP-740’s operating modes are:

• Dolby Digital: This mode applies only when you’ve selected one the GTP-740’s three digitalonly sources; DVD, digital RF, or digital aux. Contrary to popular belief, Dolby Digital does not always imply a discrete 5.1, channel soundtrack. That’s because a Dolby Digitalencoded source may have 6 separate channels of information ... or 4, or 3, or 2, or only 11 This is up to the producers of the software you’re playing. If allowed by the software, all six channels are active.

• Cinema: Not an actual mode itself, “cinema” is an equalization (“EQ") curve designed to reduce

excessive high frequencies and the consequent harshness sometimes encountered in movie soundtracks originally mixed strictly for theatrical release. “Cinema” can be used in conjunction with Dolby Digital or Dolby Pro Logic.

• Dolby Pro Logic: Usable with both analog and PCM (i.e., non-Dolby digital-encoded) digital sources, this is the surround mode of choice for most videotapes, surround-encoded TV broadcasts, and many music CDs.

• Symphony Hall: This mode emulates the expansive space of a typical concert hall and is available for all two-channel sources, analog as well as PCM digital. The subwoofer channel is nof active in this mode.

• Stadium: Again intended only for analog and PCM digital sources, this mode re-creates the soundfleld typical of a large outdoor sporting event with long reverberation times and somewhat rolled-off high frequency response. Again, no subwoofer output.

• Jazz Club: An analog and PCM digital source enhancement, this mode simulates the intimacy of a very small acoustic space. Again, no subwoofer output.

• 5 channel stereo: This makes full use of a home theater speaker array (except for the subwoofer) vrhen playing two-channel only (analog or PCM digital) sources. It's ideal for parties or any other time when you want to get the broadest possible sound distribution from a non-surround encoded source.

• 2 channel stereo: Obviously, the preferred mode for traditional two-channel listening. This mode is available for both analog and digital sources. In fact, the GTP-740 may even “auto switch” to 2 channel stereo mode — even for a Dolby Digital source when it

contains only stereo or mono soundtrack information.

5.0 TROUBLE SHOOTING

Your GTP-740’s circuitry is built around advanced microprocessors. The GTP-740 may exhibit occasional anomalies arising from AC line surges, etc. If you experience

unexpected behavior, or if the GTP-740 “locks up” and does not respond to control input, reset it by turning front power switch off. (Do not use the remote control’s

“power” button.) Wait 10 seconds and then turn the GTP-740 on. This will reset the

internal control circuitry and solve almost all problems.

SYMPTOM

Power LED does not light

POSSIBLE REASON

AC Power Cord not plugged in AC Fuse failed

Power LED glows

but no sound

Power amp or source unit is not on Ball Switch (rear panel) is on

No sound from one channel Connections in rear of amp are loose

Input or Output connector disconnected or loose

Speaker disconnected

Hum from all speakers (any volume)

Ground loop present (difference in ground voltages between components)

A major appliance, dimmer, halogen or fluorescent light may be creating interfereruie

Hum from all speakers

Problem with source unit (CD, etc.) (increases or decreases with change in system volume)

Problem wiffi cable connecting that

source to the Tuner/pre-amp

POSSIBLE SOLUTION

Plug in AC Power Cord Replace AC Fuse

Make sure whole system is on Put Ball System switch in Off position

Verify all connections on rear of amp Verify both connections on that channel

Verify connection at speaker If cable TV is present, see Note 1

If cable TV is not present, see Note 2

Make sure all appliances, dimmers and suspect lights are off

Try different source to verify Try different cable to verify

Note 1; Cable TV systems can contribute to ground loop problems which, in turn, cause “hum.” To determine whether your cable system is

the contributing factor, disconnect the cable TV incoming signal line (the round, 75 ohm cable) before it first connects to your system. If the

hum disappears, you should insert a ”75 ohm Ground Loop Isotator” between the cable down Jead and your system. Check with your

ACCOM Dealer to obtain one. If the isolator does not fully cancel the hum, please read Note 2 to complete the troubleshooting procedure.

Note 2; Make sure that the power amplifier is at least 6" from ttie Tuner/Pre-amp. Usually, putting another component between these two units is sufficient to minimize the hum. If this does not work, turn the system off and disconnect all input cables from the amplifier. Turn the

system on again. If the hum persists, your Dealer or Service Center should dteck the amplifier. If the hum disappears, try another set of

RCA cables. (Remember to turn your entire system off whenever you change cables. You may also need to wait a few moments after turning the amplifier off until the power supply discharges to avoid nasty “thumps" when you disconnect or connect cables.) Connect one RCA cable at a time to see if the hum returns and. if it does, which specific cable is responsible. Replace that cable. If the hum persists with any (or all) cables, then your GTP-740 should be checked by your Dealer or Authorized Service Center

6.0 CARE, MAINTENANCE, and SERVICE

CARING FOR YOUR GTP-740

Great care has been taken by ADCOM to ensure that your GTP-740 is as flawless in appearance as it is electronically. Jhe front panel is a heavy gauge, high-grade aluminum extrusion carefully finished and anodized for durability. The chassis, top cover, and rear panels are heavy gauge steel that have been powder-coated and baked to ensure a lasting finish. If the front panel, top or sides become dusty or finger printed, they can be cleaned with a soft lint free cloth, slightly dampened with a very mild detergent solution or glass cleaner.

WARNING! Do not spray or pour liquids of any kind on the GTP-740.

SERVICING ADCOM has a Technical Service Department to answer questions pertinent to the installation and operation of

your unit. In the event of difficulty, please contact us for prompt advice. Please have the following information readily at hand; the unit’s model and serial numbers, and dealer from which it was bought. If your problem cannot be resolved through our combined efforts, we may refer you to an authorized repair agency, or authorize return of the unit to our factory. To aid us in directing you to a convenient service center, it would be helpful if you indicate which major city is accessible to your home.

Please address mail inquiries to:

ADCOM Service Corporation

10 Timber Lane Marlboro. NJ 07746 USA

UNDER NO CIRCUMSTANCES SHOULD YOUR UNIT BE SHIPPED TO OUR FACTORY WITHOUT PRIOR AUTHORIZATION, OR PACKED IN OTHER THAN ITS ORIGINAL CARTON AND FILLERS.

For Fax inquires, please include a return Fax or voice number; for the reply. When calling or writing about your , GTP-740, be sure to note and refer to its serial number as well as the date of purchase and the dealer from whom it was purchased. In the event the unit must be returned to our factory for service, you will be instructed on the proper procedure when you call or write for a Return Authorization. For warranty coverage, a copy of the original proof of purchase is required. If you have no original copy, please contact your dealer to obtain a duplicate copy.

If the original shipping carton and its fillers have been lost, discarded, or damaged, a duplicate carton may be

obtained from our Parts Department for a nominal charge. Always ship PREPAID VIA UNITED PARCEL SERVICE (UPS) OR OTHER APPROVED CARRIER. DO NOT

SHIP VIA PARCEL POST, since the packaging was not designed to withstand rough Parcel Post handling.

FREIGHT COLLECT SHIPMENTS CAN NOT BE ACCEPTED UNDER ANY CIRCUMSTANCES.

Phone, Fax or E-mail inquiries to:

Voice; 732-683-2356

Fax: 732-683-9790

Monday through Friday 9:00AM to 5;00PM EST

E-mail:

service@adcom.com

8.0 SPECIFICATIONS

Preamplifier Section

Output Level (Rated)......................................................................2.0V

Input Impedance........................................................................... 20kQ

OutplJt Impedance....................................................................... 100Q

Frequency Response

20Hz to 20kHz

...............................................................

+0, -0.5dB

THD+N@ Rated Output

20Hz to 20kHz...................................................................<0.02%

IM Distortion

CCIF @ 15kHz and 16kHZ...............................................<0.009%

Signal to Noise Ratio (Ref. to 2V)

“A" Weighted.....................................................................>95dB

FM Tuner Section

Usable Sensitivity (Mono).....................................................3pV/15dBf

Quieting Sensitivity (50dB)

Mono........................................................................3.4|xV/22dBf

Stereo

........................................................................

31pV/41dBf

Signal To Noise (65dBf, "A” weighted)

. Mono............................................................................................78dB

Stereo..................................................................................70dB

THD+N (1kHz, 65dBf)

Mono..................................................................................0.05%

Stereo.................................................................................0.09%

Capture Ratio.............................................................................. 2.0dB

Alternate Channel Selectivity (± 400kHz).....................................>55dB

Separation (@1kHz)

..........................1.......................................

>50dB

Frequency Response (±0.5dB).........................................30Hz to 15kHz

AM Tuner Section

Sensitivity.............................................................................. 300jxV/m

Selectivity

..................................................................................

^40dB

Signal to Noise (5mV/m “A” Weighted)...................................^45dB

General

Power (available in 230V on special order)

Chassis Dimensions

Maximum Dimension

............

.......

4”(102mm) x 17”(432mm) x 11 V2”(292mm)

4 %”(108mm) x 17”(432mm) x 12 %”(324mm)

Weight.................................................................

................

.............

120VAC/50-60Hz

16lbs. (7.3kg)

Weight, Packed.................................................................191bs. (8.7kg)

Printed in the USA GTP-740/v.l .0

10 Timber Lane

Marlboro, NJ 07746

Tel: (732) 683-2356

Fax: (732) 683-9792

www.adcom.com

Adcom GTP-740 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

GTP-740

Table of Contents

PRELIMINARY INFORMATION

2.0 INSTALLING/CONNECTING THE GTP-740.

1.0 PRODUCT FEATURES

© © ©

2.0 JNSTALLING/CONNECTING THE GTP-740

3.0 INITIAL SETUP

3.7 Using bal. chk

4.0 BASIC OPERATION