Adcom GTP-860 User Manual

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OWNER’S MANUAL

tune/ prese t

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surr ound mode

G T P - 8 6 0

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PR O L OG I C I I

GTP-860

Digital Processing Tuner/Preamplier

WELCOME

Dear fellow ADCOM product owner,

Welcome to the ADCOM family! For more than twenty years, ADCOM products have delivered excellent performance and value for customers around the world. Our products are designed by our experienced and demanding engineering team, built to the highest standards in our factory, and sold and serviced through dealers, custom installers, and other retailers whose primary goal is your complete satisfaction.

We know you are anxious to hear your new preamplifier in action, but please take a few minutes to read this owner’s manual before connecting the preamplifier to your system. It is particularly important that you connect your preamplifier to your amplifier and speakers while the amplifier and preamplifier is unplugged and your other equipment is turned off. This will protect your equipment from potential short circuits that may occur during installion. In addition, it is important that you allow for adequate ventilation around your preamplifier and other equipment, since excessive heat buildup can shorten the life of any electronic product, including the preamplifier. Once you have correctly connected your amplifier and speakers to your new preamplifier, you should be able to enjoy many trouble-free years of performance.

We conduct a thorough quality and performance test on each and every preamplifier we build in our factory prior to shipment. In the rare case of a defect that may occur after shipment, we stand behind our preamplifiers with a five-year parts and labor warranty. To register for this warranty, please complete and mail the enclosed warranty card back to ADCOM. Also, please keep a copy of your sales receipt with the owner’s manual so you may provide proof of eligibility for the warranty should the need arise.

We know you will be very happy with the sound and performance of your new preamplifier. We hope you will also consider other ADCOM products, such as our line of preamplifiers and DVD and CD players. In addition, we design and manufacture complementary products such as line conditioners/ surge suppressors and speaker selectors. Please visit our web site, www.adcom.com, to learn more about our complete line of stereo, home theater, and distributed audio/video products.

On behalf of all of us at ADCOM, I want to thank you for selecting our product for your home or business entertainment system.

Sincerely,

Douglas Klein President ADCOM

2 | ADCOM GTP-860 OWNER’S MANUAL

TABLE OF CONTENTS

WELCOME . .. . . .. . .. . ... . .. . .. . ... . .. . .. . . .. . .. . ... . .. . .. . .. 2

SAFETY INFORMATION .. . . .. . .. . ... . .. . .. . ... . .. . .. . . .. . .. . 4

INTRODUCTION & UNPACKING . . ... . .. . .. . ... . .. . .. . . .. . .. . 5

WARRANTY INFORMATION .. .. . ... . .. . .. . ... . .. . .. . . .. . .. . . 5

DESCRIPTION OF UNIT

FRONT PANEL DRAWING . .. . .. . ... . .. . .. . . .. . .. . ... . .. . .. . . 6

1.1 INTERFACE OVERVIEW .. . ... . .. . .. . ... . .. . .. . . .. . 7-10

REAR PANEL DRAWING .. .. . .. . ... . .. . ... . .. . .. . ... . .. . .. . 11

1.2 INPUTS & OUTPUTS SYSTEM CONNECTIONS .. . .. . 12-15

REMOTE CONTROL DRAWING . .. . ... . .. . .. . ... . .. . .. . . .. . . 16

2.1 OVERVIEW OF THE GRC-800 . ... . .. . .. . ... . .. . .. . 17-19

2.2 REMOTE FUNCTION TABLE ... . .. . .. . . .. . .. . ... . . 20-21

2.3 PROGRAMMING YOUR REMOTE CONTROL . . .. . .. . 22-23

2.4 PROGRAMMING MACRO BUTTONS .. . ... . .. . .. . . .. . .. 24

2.5 DISCRETE CUSTOM CODES FOR INSTALLERS . ... . .. . . 25

PLACEMENT OF THE GTP-860 . .. . ... . .. . .. . ... . .. . .. . . .. . .. . 25

OPERATION & SETUP

3.1 ONSCREEN DISPLAY . ... . .. . .. . . .. . .. . ... . .. . .. . . .. . 26

3.2 CHANNEL BALANCE . . . .. . .. . ... . .. . .. . ... . .. . .. . . .. 26

3.3 CHANNEL DELAYS ... . .. . .. . . .. . .. . ... . .. . .. . ... . 27-28

3.4 SPEAKER SETTINGS . ... . .. . .. . ... . .. . .. . . .. . .. . . 28-29

3.5 SURROUND SPEAKER PLACEMENT . . .. . ... . .. . .. . . .. . 30

3.6 INPUT SETTINGS ... . .. . .. . ... . .. . .. . . .. . .. . ... . .. . 31

TROUBLESHOOTING

RESOLVING PROBLEMS . . ... . .. . .. . ... . .. . .. . . .. . .. . ... . .. 32

TROUBLE SHOOTING . . .. . ... . .. . .. . ... . .. . .. . . .. . .. . ... . . 33

CARING FOR YOUR GTP-860 . . .. . . .. . .. . ... . .. . .. . ... . .. . . 34

SERVICE INFORMATION . . .. . ... . .. . .. . . .. . .. . ... . .. . .. . ... 34

GTP-860 SPECIFICATIONS . .. . .. . . .. . .. . ... . .. . .. . ... . .. . . 35

ADCOM GTP-860 OWNER’S MANUAL | 3

THE FOLLOWING PRECAUTIONS AND SAFETY INSTRUCTIONS

power lines

ground clamp

power service grounding electrode system (e.g. interior metal water pipe)

ground clamps

optional antenna grounding electrode driven 8 feet (2.44 M) into the earth if required by local codes.

bonding jumper, d

service entrance equipment

service entrance conductors

standoff insulators, b

mast

antenna lead-in wire

antenna discharge unit, c

ground wire, a,b

to external antenna terminals of radio receiver

ground wire, a,b

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT

OPEN

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT

OPEN

ARE REQUIREMENTS OF UL AND CSA SAFETY REGULATIONS

Warning: To reduce the risk of re or electric shock, do not expose this unit to rain or moisture.

The graphic symbol of a lightning ash with an arrow point within a triangle signies that there is dangerous voltage within the unit and it poses a hazard to anyone removing the cover to gain access to the interior of the unit. OnIy qualied service personnel should make any such attempt.

The graphic symbol of an exclamation point within an equilateral triangle warns a user of the device that it is necessary to refer to the instruction manual and its warnings for proper operation of the unit.

Do not place this unit on an unstable cart, stand, tripod, bracket, or table. The unit may fall, causing serious injury to a child or adult, and serious damage to the unit. Use only with a cart, stand, tripod, bracket, or table recommended by the manufacturer or sold with the unit. Any mounting of the device should follow the manufacturer’s instructions, and should use a mounting accessory recommended by the manufacturer.

Read all the safety and operating instructions before connecting or using this unit.

Retain this notice and the owner’s manual for future reference.

All warnings on the unit and in its operating instructions should be adhered to.

All operating and use instructions should be followed.

Do not use this unit near water. For example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool.

POUR PREVENIR LES CHOCS ELECTRIQUES NE PAS UTILISER CETTE FICHE

ATTENTION

POLARISEE AVEC UN PROLONGATEUR, UNE PRISE CE COURANT OU UNE AUTRE SORTIE CE COURANT, SAUF SI LES LAMES PEUVENT ETRE INSEREES A FOND SANS EN LAISSER AUCUNE PARTIE A DECOUVERT.

CAUTION

TO PREVENT ELECTRIC SHOCK DO NOT USE THIS POLARIZED PLUG WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE.

CAUTION POWER LINES

Any outdoor antenna must be located away from all power lines.

OUTDOOR ANTENNA GROUNDING

If an outside antenna is connected to your tuner or tuner/preamplier, be sure the antenna system is grounded so as to provide some protection against voltage surges and built-up static charges. Section 810 of the National Electrical Code, ANSI/NFPA No. 701984, provides information with respect to proper grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of grounding conductors, location of antenna discharge unit, connection to grounding electrodes, and requirements for the grounding electrode.

a. Use No.10 AWG (5.3 mm2) copper, No.8 AWG (8.4 mm2) aluminum, No.17 AWG (1.0 mm2) copper clad steel or bronze wire, or larger, as a ground wire.

b. Secure antenna lead-in and ground wires to house with stand-off insulators spaced from 46 feet (1.221.83 m) apart.

c. Mount antenna discharge unit as close as possible to where lead-in enters house.

d. Use jumper wire not smaller than No.6 AWG (13.3 mm2) copper, or the equivalent, when a separate antenna grounding electrode is used. See NEC Section 810-21 (j).

EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL CODE INSTRUCTIONS CONTAINED IN ARTICLE 810. RADIO AND TELEVISION EQUIPMENT.

The unit should be installed so that its location or position does not interfere with its proper ventilation. For example, it should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation openings; or placed in a built-in installation, such as bookcase or cabinet, that may impede the ow of air through its ventilation openings.

The unit should be situated away from heat sources such as radiators, heat registers, stoves, or other devices (including ampliers) that produce heat.

The unit should be connected to a power supply outlet only of the voltage and frequency marked on its rear panel.

The power supply cord should be routed so that it is not likely to be walked on or pinched, especially near the plug, convenience receptacles, or where the cord exits from the unit.

Clean unit only as recommended in its instruction manual.

The power supply cord of the unit should be unplugged from the wall outlet when it is to be unused for a long period of time.

Care should be taken so that objects do not fall, and liquids are not spilled, into the enclosure through any openings.

This unit should be serviced by qualied service personnel when: A. The power cord or the plug has been damaged; or B. Objects have fallen, or liquid has been spilled, into the unit; or C. The unit has been exposed to rain, or liquids of any kind; or D. The unit does not appear to operate normally, or exhibits a marked change in performance; or E. The device has been dropped, or the enclosure damaged.

DO NOT ATTEMPT SERVICING OF THIS UNIT YOURSELF.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

This reminder is provided to call the CATV system installer’s attention to

NOTE TO CATV SYSTEM INSTALLER

Article 82022 of the National Electrical Code that provides guidelines for proper grounding and, in particular, species that the cable ground shall be connected to the grounding system of the building, as close to the point of cable entry as practical.

INTRODUCTION

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PRO LOGIC II

Congratulations on your decision to purchase the ADCOM GTP-860 tuner-preamplifier. The GTP-860 provides

Dolby Digital and DTS decoding with 7.1 output channels, as well as a 5.1 analog bypass and the RDS radio data

system. These features and ADCOM’s legendary quality provide the heart of your cutting-edge home theater. You

have made a wise choice that will reward you for years to come with exceptionally accurate and musical sound

reproduction. To realize the full potential of your new preamplifier, and before making any connections to it,

please read these operating and installation instructions thoroughly.

UNPACKING THE GTP-860

Before your new ADCOM tuner-preamplifier left our factory, it was carefully inspected for physical imperfections

and tested for all electrical parameters as a routine part of ADCOM’s systematic quality control. This, along with

full operational and mechanical testing, should ensure a product flawless in both appearance and performance.

After you have unpacked the GTP-860, 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 the preamplifier ever

need to be shipped again. In the unlikely event damage has occurred, notify your dealer immediately and request

the name of the carrier so a written claim to cover shipping damages can be initiated. 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.

GTP-860 Tuner/Preamp

✔

GRC-800 Remote Control

✔

with Batteries

GTP-860 Owners Manual

✔

and Warranty

ADCOM Power Cord

✔

Video 5 input cover

✔

FM Antenna/Balun Adapter

✔

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 benets. 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, or if the ADCOM Warranty Card is not

included in the carton, 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. Always retain your

original sales receipt as a proof of purchase.

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.

Manufactured under license from Digital Theater Systems, Inc. US Patent Number 5,451,942 and other worldwide patents issued and pending. “DTS,” “dts,” “DTS Digital Surround,” are trademarks of Digital Theater Systems, Inc. Copyright 1996 Digital Theater Systems, Inc. All Rights Reserve

ADCOM GTP-860 OWNER’S MANUAL | 5

[1]

[9] [10] [11] [12] [13]

[4]

[3]

[2] [5]

[7] [6]

[5]

[8]

DESCRIPTION OF UNIT FRONT PANEL

[1] Power Button

[2] Display Button

[3] FM Mute/High Blend Button

[4] Memory Button

[5] Tuner Up/Down Buttons

[6] Tune/Preset Button

[7] Display Window

[8] Volume Knob

[9] Headphone Output & Video 5 Input

[10] Surround Backs Button

[11] Input Selector Buttons

[12] Surround Mode Button

[13] Bass/Treble Controls

6 | ADCOM GTP-860 OWNER’S MANUAL

1.1 Interface Overview

The GTP-860’s front panel is designed for ease of

display panel, and the station’s RDS name is automatically

displayed (RDS PS).

operation. All controls are logically grouped for easy,

intuitive operation. Familiarize yourself with the preced-

ing diagram and read the short explanations of each fea-

ture below. When you finish, you will be well on your way

to enjoying the GTP-860’s convenience and sound quality.

[1] Power Button

Depress the Power button to switch the preamplifier to

its ‘Stand-By’ mode. The amber LED in the power button

will light up. On the front panel, press any of the input

selector buttons [11] to switch the preamplifier on. From

the remote control, press the power button [30] to switch

the unit on (see remote diagram, page 20). The display

will light up indicating which input was selected and the

power button LED will turn red.

Pressing the Power switch again will turn the unit OFF

completely. The GTP-860 preamplifier uses a memory

back-up system to store surround sound trim settings and

preset station information for the tuner section. This

information is retained for several weeks, even if the unit

is switched off completely or unplugged.

Some radio stations, which support RDS, also transmit

additional information, known as Radio Text (RDS RT).

To view this information, use the Display button.

With stations carrying RDS information, the Display

button scrolls between three different display modes,

each successive push of the button engages the next one

of the three modes:

a) In the default mode, the station’s RDS name is

displayed, Program Service (PS; normally the station’s

calling letters, WXYZ, for instance).

b) From the default mode, press the button once to view

Radio Text (RT). This can be additional information such

as the presenter’s or program’s name; what song is play-

ing, etc. This text scrolls continuously over the 8 alpha-

numeric display segments. It takes a few seconds for the

tuner to gather the RT information, so immediately after

tuning to a station and selecting to view RT the display

will indicate “NO TEXT” and default to the station name.

If no RT information is available, the display will also

show “NO TEXT” for three seconds before reverting to the

default mode.

Press the Remote Control Power button [30] to switch the

unit from Operating to Stand-By mode. Press this button

again to switch to Unit On from Stand-By; the last select-

ed source will be indicated in the display.

The Power Button LED will light up amber when the

preamplifier is switched On, but in Stand-By mode.

NOTE: In Stand-By mode the GTP-860 uses very little power.

However, it is recommended that you switch the unit com-

pletely off if it is not going to be used for more than a couple

of days. Switch off completely by pressing the Power button on

the front panel. All lights will extinguish. When the GTP-860

is plugged into the wall current may still be flowwing into the

transformer. Only when the GTP-860 is unplugged is all current

into the device stopped.

[2] Display Button

The GTP-860 supports RDS PS and RDS RT. With stations

carrying RDS information, “RDS” will light up in the

c) Press the Display button from the RT mode to display

the station frequency. Press again to return to the default

mode (a).

When the Display button is pressed when tuned to a non-

RDS station, the display will show “NO NAME” for three

seconds before reverting to the default display.

The Display button also has a secondary function: When

pressed and held for three seconds, the front panel dis-

play will dim. Press and hold the button again to turn the

display off, and again to set the display back to its

original brightness.

[3] FM Mute/High Blend Button

This button combines two functions; it switches the tuner

from Stereo to Mono and disengages the muting circuitry

at the same time. The muting circuit will mute the tuner

in between radio stations when searching or tuning to

avoid tuning noise.

ADCOM GTP-860 OWNER’S MANUAL | 7

However, very weak radio station signals may be sup-

pressed by the muting circuit. If such a very weak station

is in stereo it will have a high level of background hiss.

Switching to Mono Mode and disengaging the muting cir-

cuit by depressing the FM Mute/High Blend button will

allow the station to be heard and will cancel most or all

of this background noise.

In normal operation the mute circuit is engaged, and the

display indicates “FM MUTE.” Press the FM Mute/High

Blend button to disengage the muting circuit and switch

from stereo to mono reception. “FM MUTE” will extinguish

in the display. Also, “STEREO” will extinguish if a stereo

broadcast was received. Press the FM Mute/High Blend

switch again to return to Auto Stereo FM operation.

In combination with the Memory button [4] a preset

number can be emptied.

[4] Memory Button

The Memory button is used to store stations into the

Preset Memory (1-30 Presets on FM, 1-10 Presets on AM),

used in conjunction with the Down/Up [5] buttons on the

front panel. When Memory is active, the Preset number

flashes and the red “MEMORY” indicator is shown in the

Display Panel. If no other button is pressed within 10 sec-

onds “MEMORY” will stop flashing and the preamplifier

will default to its previous state.

To Store a Preset:

Tune to the radio station you wish to enter into a Preset.

If the station is transmitting RDS information, the RDS

indicator will light up and station initials will be shown in

the Display Panel. If a non-RDS station is found, then just

the frequency will be shown.

To store that station as a Preset, press Memory [4].

“MEMORY” and the preset section in the display panel will

start to flash. If no other button is pressed within 10 sec-

onds, “MEMORY” will stop flashing and the preamplifier

will default to its previous state.

Press the Down/Up [5] buttons to select which Preset

number you wish to assign to the station (from 1 to 30

on FM and 1 to 10 on AM), shown as a flashing number in

the Display Panel, and then press Memory [4] again. The

Memory light in the Display Panel will go out and the sta-

tion is now stored in your GTP-860’s memory.

To exit the Memory mode without storing a station, leave

all the tuner controls untouched; the Memory mode will

automatically cancel itself after 10 seconds. The Memory

Presets have a memory back-up, so they will remain

stored for several weeks even if the Preamplifier is

switched off or unplugged from the main supply.

NOTE: You can enter a new station into an unused Preset

or overwrite an existing programmed Memory Preset. By

doing this you will replace the radio station previously

held on that Preset number.

Deleting a stored Preset:

You can empty a Preset by deleting the stored information:

• Press Memory button [4]

• Select the Preset to be emptied by pressing the Up/

Down buttons [5].

Press FM Mute/High Blend button [3]. The Preset will then

be deleted and ‘—‘ appears as the Preset number.

[5] Tuner Up/Down Buttons

The function of these buttons depends on the tuning

mode selected with the Tune/Preset button [6]. The Tune/

Preset button toggles between the two operation modes:

a) Preset mode (indicated in the display area): Press the

Down button to scroll to a lower number Preset; press the

“ Up” button to scroll to a higher Preset number. This is

a “wrap-around” function, so that going from the high-

est number Preset, the tuner will go to the lowest Preset

number or vice-versa when tuning either up or down.

b) Tune mode: Press the “Up” or “Down” button for more

than 1/2 second to engage automatic tuning respectively

up or down the frequency band. The tuner will search

automatically for the first reasonably strong radio station,

where it will stop. Press the Down/Up button again for

1/2 second to start searching again.

NOTE: Automatic tuning is available on both FM and AM.

By briefly tapping the Down or Up buttons you can engage

manual tuning respectively down or up the frequency band

for precise tuning to a specific frequency. With each suc-

cessive tap of the keys, the tuner will take 0.05 MHz steps

on FM so you can accurately tune into the desired fre-

quency. For AM the tuning steps are factory set at 10 kHz.

This tuning mode can also be useful when trying to

receive a radio station which is too weak for the auto

8 | ADCOM GTP-860 OWNER’S MANUAL

search mode. When tuned accurately to a station,

“TUNED” will light up in the display.

[6] Tune/Preset Button

The Tune/Preset button toggles between the Preset and

Tune mode. When Preset mode is selected, “PRESET”

lights up in the display area. Refer to the Tuner Up/Down

button [5] description for more information.

[7] Display Window

The display area shows all vital information when the unit

is operational.

[8] Volume Knob

The Volume control adjusts the overall loudness of the

signals being fed to the preamplifier outputs. Unlike con-

ventional controls, the GTP-860’s volume control doesn’t

have a start or end position. Volume can also be adjusted

from the remote control using the Master Volume Up or

Down buttons [34]. The Volume control does not affect

recordings made using the Tape, Video 3 and Video 4

outputs but will affect the signal going to the Preamp

Outputs. The volume level is indicated in the display

panel when it is being adjusted, and after three seconds

the display defaults to its previous status. Volume setting

can range from -61dB to +18dB.

REMEMBER: Listening at high levels can damage your hearing.

The video five input is located on the front panel to sim-

plify connection of a camcorder or a video game console.

To select video five, push the corresponding front panel

button in the input selector section.

[10] Surround Backs Button

Pressing this button engages ADCOM’s proprietary 7.1m²™

decoding algorithm. The 7.1m²™ decoding process mixes

the signals from the left surround and right surround chan-

nels to derive two unique signals sent to each back output.

The benefit of our 7.1m²™ decoding process is enhance

imaging between the surround speakers and the creation

of a more diffuse ambient sound field. The 7.1m²™ pro-

cess has the same benefits when compared to other matix

decoding as stereo signals have over mono signals. The

7.1m²™ process can also be used to drive your surround

back speakers when you are listening to an externally

decoded DVD audio or SACD multi-channel disc. Due to

the varying nature of film soundtracks and music, you may

prefer to activate or deactivate the surround back chan-

nels. For example, Dolby Digital 5.1 and DTS soundtracks

benefit greatly from the addition of the 7.1m²™ process-

ing. Prologic soundtracks on the other hand provide a

mono surround signal track, which yields a less satisfying

experience when using the surround back channels.

On the remote control, press the Mute button [32] to

temporarily switch off the sound to the Preamp outputs

and headphones. Mute mode is indicated by “MUTING”

flashing in red in the display area. Press Mute again to

restore sound. Mute does not affect recordings made

using the Tape, Video 3 and Video 4 outputs but does

affect the signal going to the Preamp Outputs.

[9] Headphone Output/Video 5 Input

A 1/4” stereo jack socket is provided for headphone lis-

tening and will work with conventional headphones of any

impedance. The volume and tone controls are operative

for headphone listening. Use a suitable adapter to con-

nect headphones with other types of connectors such as

3.5mm stereo ‘personal stereo’ jack plugs. Inserting a

headphone will automatically turn off the signals from the

Preamp Outputs, and set the listening mode to Stereo.

NOTE: Head phones are only LF RF output. If listening to

5.1 material center channel should be turned off.

The level of the Surround Back channels can be adjusted

in the same manner as the other channels, either through

the On-Screen-Display (OSD) or with the Bal. or Test func-

tions from the remote control. Be sure to experiment to

find the balance that best suits your taste.

[11] Input Selector Buttons

These buttons select the active video and audio input for

the GTP-860. The source that is currently selected will be

shown in the front panel display and the LED in the source

button will be red. The currently selected source signal

is sent to the main preamp outputs after processing and

the video 3, video 4, aux and tape outputs. If an input

has both digital and analog input capabilities the GTP-

860 will give priority to an existing digital signal, and in

the absence of a digital signal will default to the analog

connection. Video signals associated with an input give

priority to s-video sources over composite video signals.

The video one and video two inputs also have component

video switching capabilities. This component video

ADCOM GTP-860 OWNER’S MANUAL | 9

switching is independent of the composite/S video signal

and does not support on-screen display messages.

ext 5.1: Selects the multi-channel output signal from

a DVD player or external decoder source (such as DVD-

Audio) connected to the ext 5.1 input as the active input.

NOTE: No ext 5.1 audio signal is available from the headphones

socket, or the Tape, Video 3 or Video 4 outputs.

Tape Monitor: Selects the output from a tape recorder

when playing back tapes or monitoring recordings being

made through the Tape sockets. Press the Tape Monitor

button once to select it and again to return to the normal

input selection.

The Tape Monitor function does not override the current

input selection that is sent to the tape outputs. When the

Tape Monitor is selected, you are listening to the signal

that is coming back into the Tape Input jacks. The cur-

rently selected source is still being sent to the Tape Out

where it can be recorded. This function enables you to

check on a recording that you are making without affect-

ing the recording process. When Tape Monitor is selected,

the button will remain lit until Tape Monitor is

disengaged again.

[12] Surround Mode Button

With the Surround Mode button the available surround

sound modes can be selected. The selected surround

mode is permanently indicated in the display area and is

also shown for 3 seconds in the large text section of the

display. The Surround Mode button scrolls through the

available surround sound modes when pressed repeatedly.

The surround modes are:

Stereo: The Stereo mode provides straight two channel

listening. With an analog source, it bypasses all process-

ing. With a digital input, only the bass-management

filtering is applied.

Hall: In the Hall Surround mode, a realistic level of

ambiance is added to a normal stereo source such as a

CD or FM radio.

Pro Logic II: Dolby Pro Logic II is the new advanced ver-

sion of Prologic, Dolby’s original surround matrix with cen-

ter channel output. Prologic II has enhanced imaging and

wider bandwidth surround signals than original Pro Logic.

Dolby Pro logic II is intended for use with most movies and

television programs that are designed to be listened to

using Prologic decoding. In addition to the standard Dolby

Prologic II, the GTP-860 supports three enhanced versions

of Prologic II processing, which were designed for specific

types of programs. “Prologic II Music” mode was designed

for use with regular old stereo recordings and it can utilize

all you speakers in your system when listening to a CD.

“Prologic II Movie” is an enhanced version of Prologic II

decoding with settings optimized for movies and televi-

sion. “Prologic II Panorama” is a version of Prologic II that

is intended for use with Movie playback that spreads the

images from the front left and right speakers around to the

surround speakers. “Prologic II Matrix” creates a surround

sound signal from mono sources.

5 ch Stereo: This mode is designed for use with stereo pro-

gram material. It is designed to get maximum output from

all your speakers. The rear speakers are driven with the

same signal as the front left and right, while the center

speaker is a monophonic summation of the front speakers.

With any of the Digital Inputs, the GTP-860 automatically

recognizes if the selected source carries a Dolby Digital™

or DTS™ signal. Dolby Digital and DTS have six indepen-

dent channels available in total: Left, Center, Right,

Surround Left, Surround Right and an “Effects Channel”

(Subwoofer). With either Dolby Digital 5.1 or DTS digi-

tal input, the Stereo, Dolby Pro Logic and Hall surround

modes cannot be selected.

The Dolby Digital signal allows for several channel

configurations. Most two-channel Dolby Digital recordings

will allow the Pro Logic listening mode to be applied.

[13] Bass/Treble Controls

The GTP-860 is fitted with Bass and Treble tone controls

to adjust the overall tonality of your system. The 12

o’clock position is ‘flat’ with no boost or cut and a

detent indicates this position.

Rotate the control clockwise to increase the amount of

Bass or Treble. Rotate the control counter-clockwise to

decrease the amount of Bass or Treble. These controls

affect the Left and Right Front channels. The Tone

controls do not affect recordings made using the Tape or

Video line outputs.

10 | ADCOM GTP-860 OWNER’S MANUAL

[14]

[20]

[22] [23] [18] [24]

[26]

[28]

[27]

[21]

[15] [16] [17] [25]

[19]

DESCRIPTION OF UNIT: REAR PANEL

[14] Antenna Connections

[15] Preamp Outputs

[16] Auxiliary Outputs

[17] Monitor Outputs

[18] Video/Analog Audio Inputs & Outputs

[19] Component Video Inputs & Output

[20] Multi-Zone Source Outputs

[21] Tape Inputs and Outputs

[22] CD Analog Inputs

[23] External 5.1 Analog Inputs

[24] Digital Audio Inputs

[25] AC Power Cord

[26] 12V DC Trigger

[27] Voltage Switch

[28] IR Input

ADCOM GTP-860 OWNER’S MANUAL | 11

1.2 Inputs & Outputs System Connectiotns

Like the front panel, the GTP-860’s rear panel is carefully

arranged to make hookup, configuration, and use as sim-

ple as possible. However, the GTP-860’s capabilities take

FM Antenna: A ribbon wire FM antenna is included and

should be connected to the FM connector at the rear of

the unit using the ‘balun’ adapter supplied. The ribbon

aerial should be mounted on a vertical surface and placed

so that it forms a ‘T’.

some study to use most effectively. We strongly suggest

that you read this section of the manual 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. The diagrams and notes in this section will prob-

ably answer most of your questions about interfacing the

GTP-860 with other components in your system.

Note that the GTP-860’s RCA-style jacks have color-coded

centers to make connections easier. Use this key to help route

cables properly:

RED centers = RIGHT CHANNEL ANALOG

AUDIO inputs or outputs

WHITE centers = LEFT CHANNEL ANALOG

AUDIO inputs or outputs

YELLOW centers = VIDEO inputs (composite)

BLACK centers = DIGITAL AUDIO inputs and

CENTER CHANNEL and

SUBWOOFER inputs and outputs

[14] Antenna Connections

AM Antenna: An AM loop antenna is supplied with the

GTP-860 and is required for AM reception. Open the clip

terminal lever and insert the wire from the antenna.

Closing the lever will lock the wire in place. Test various

positions for the antenna, but always ensure the loop is

placed vertically for best reception. Placing the antenna

close to large metal items such as metal shelves or

radiators may interfere with reception.

NOTE: When reception is not satisfactory using the supplied

AM loop antenna alone, connection of an external antenna is

recommended. The antenna cable to the loop antenna must not

exceed three meters.

Experiment with placement of the antenna to find the

position that gives the best signal strength and low-

est background noise. An inadequate FM signal normally

results in high levels of hiss, especially in stereo, and

interference from external electrical sources. In areas of

poor FM reception, the tuner section’s performance can

be improved by using an externally mounted FM antenna.

A qualified aerial installer will be able to advise and fit a

recommended aerial for your reception conditions.

[15] Preamp Outputs

Before making any connections, check that the GTP-860

and the power amplifiers it will be connected to are

switched off. Connect the RCA-to-RCA leads from the

Front Left and Right, Center, Surround Rear Left and

Right, and Surround Back Left and Right Preamp Outputs

to your external amplifiers. The subwoofer preamp output

allows for connection to a sub-bass speaker system with

its own external or integrated power amplifier (“active”

or “powered” subwoofers).

With volume turned down to a low level, switch power on

only after all connections have been made.

[16] Auxiliary Outputs

The auxiliary outputs allow a line level connection to

various devices, such as an audio system in another room.

The output is the selected source.

[17] Monitor Outputs

Composite Video and S-Video outputs are for connecting

a TV or Video Monitor to view video sources connected to

Video 1 through Video 5. Using a Video RCA-to-RCA lead or

S-Video, connect the ‘Video Line In’ on the TV or monitor

to the MONITOR OUT.

Note that an S-video input signal will also be available as

a composite video signal on the Monitor out if the corre-

sponding source is selected. Composite video input

signals will also be available as S-Video signals on the

Monitor output.

12 | ADCOM GTP-860 OWNER’S MANUAL

The video signal available on the S-Video and Video

Composite outputs is dependent on the selected video

input (Video 1, Video 2, Video 3, Video 4, Video 5).

However, when one of the audio-only sources is selected

(FM, AM, CD, Tape Monitor or ext 5.1) the last selected

video signal from one of the video inputs will be present

on these outputs. This way you can watch a DVD player or

video while using the 5.1 analog audio inputs from a DVD

player, as you might do when listening to a DVD-A or SACD disc.

[18] Video/Analog Audio Inputs & Outputs

Apart from the audio signal, these inputs will also accept

a video signal which will be routed to the Monitor Out

sockets [17] for a television or video projector. Composite

connection (using the yellow RCA socket) or an S-Video

connection (using the Mini-Din connector) is available.

of the VCR to Video Out of the GTP-860 preamplifier for

recording of video signals.

[19] Component Video Inputs & Output

The GTP 860 can switch between two sources with com-

ponent video output. The “video 1” and “video 2” sources

have the capabilities to accept component video signals.

Each component video signal uses three RCA type connec-

tions (Y-green plug, PB – blue plug, and PR – red plug), all

three connections should be made for optimum video per-

formance. Be sure to use high quality video

specific cables for connection. The Component video

connection is independent from the S-Video/Composite

video jacks. In order to maximize signal quality, no On-

screen text will appear on the component outputs. The

“video component output” jacks should be connected to

component video input on your TV.

The S-Video standard allows for higher quality video signal

transfer when compared to the Video Composite standard. If

your video components have an S-Video connector use dedi-

cated S-Video leads to connect them to the GTP-860 in the

same way as described with the Video Composite equivalents.

A video signal fed to an S-Video input socket will be avail-

able on both the S-Video Monitor Out and Video Composite

Monitor Out.

Video 1 & Video 2: Inputs for the audio playback and

video signal from a video device such as a stereo TV, DVD

player, satellite cable TV receiver or a Laser Disc. Using

twin RCA-to-RCA leads, connect to the left and right

‘Audio Out’ of the video device to these inputs. Using a

single RCA-to-RCA lead (Video Composite) or S-Video lead,

also connect the video output of the video device. Video 1

& Video 2 can be used for video playback only. Use Video

3 or Video 4 if you want to connect a VCR for recording

and playback through the GTP-860.

Video 3 & Video 4: Connections for the audio recording

and playback to a VCR or other video recorder. Using twin

RCA-to-RCA leads, connect to the left and right ‘Audio

Out’ of the VCR to the Video 3 or Video 4 IN connectors

for playback. Connect the left and right ‘Audio In’ of the

VCR to the Video 3 or Video 4 OUT connectors for record-

ing. Using a single RCA-to-RCA (Video Composite) lead or

S-Video lead, also connect the video output of the VCR

to Video In for Video playback. Connect the Video Input

[20] Multi-Zone Source Outputs

These output jacks provide a duplicate of the analog

audio signal that are connected to Video 1-4, CD and Tape

inputs. They are designed to allow the user to interface

the sources connected to the GTP-860 with an external

stereo receiver or tuner/preamplifier to facilitate multi-

zone operation. When using the GTP-860 in conjunction

with the GTP-506/GFA-5006 (a three room stereo tuner-

preamplifier and amplifier combination) the user can

deliver sound to three additional rooms using the same

source components hooked up to the GTP-860.

See drawing on next page (page 14) for details.

[21] Tape inputs and Outputs

Connections for analog recording and playback to an audio

tape recorder of any type, such as a cassette, reel-reel,

DAT, MD or CD-R. Using twin RCA-to-RCA leads, connect to

the left and right ‘Audio Output’ of the tape machine to

the TAPE IN connectors for playback. Connect the left and

right ‘Audio Input’ of the tape machine to the TAPE OUT

connectors for recording.

[22] CD Analog Inputs

Input for CD player (analog audio signal) or other line-level

signal source. Use a twin RCA-to-RCA lead to connect the

CD player’s left and right ‘Audio Outputs’ to this input.

ADCOM GTP-860 OWNER’S MANUAL | 13

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Multi-Zone Source Outputs

The drawing above illustrates the proper hook-up to

provide audio to multiple zones using a signal source

with the GTP-860. As illustrated above we use a

GTP-506 and GFA-5006 to ditribute the audio source, an

ADCOM GCD-750 CD player.

Referanced from page 13, [20].

14 | ADCOM GTP-860 OWNER’S MANUAL

[23] External 5.1 Analog Inputs

Inputs for the multi-channel audio signals from an exter-

nal decoder, such as an SACD or DVD-Audio player with

integrated decoder. Use two twin RCA-to-RCA leads to

connect the decoder’s front left and right ‘Audio Outputs’

to the Front left and right inputs, and the decoder’s

Surround left and right outputs to the Surround left and

right inputs. Use a third twin RCA-to-RCA lead to connect

the decoder’s subwoofer output to the Subwoofer input

and the decoder’s Center channel output to the Center

channel input. Make sure to follow color coding of the

plugs to ensure that both Center and Subwoofer are con-

nected correctly; for instance, use the red plugs at either

end to connect the center channel and the white plugs for

the subwoofer channel.

International Setup Procedure

Changing the video output between NTSC and PAL:

— Press to momentarily hold ‘MEMORY’ + ‘VIDEO 1’ keys

at the same time.

— The VFD display will indicate the current video system

for three to four seconds and then return to normal

display function.

Changing the AM stepping frequency between USA

10KHz and Europe 9KHz:

— Press to momentarily hold ‘EXT5.1’ + ‘VIDEO 3’ keys at

the same time.

— The VFD display will indicate the current AM stepping

frequency for three to four seconds and then return to

normal display function.

[24] Digital Audio Inputs

The GTP-860 has six digital audio inputs to allow for

connection of DVD, CD or other digital sources. Three

inputs are optical and three are coaxial.

Use a cable with the proper impedance specifically

designed for the transfer of digital signals.

[25] AC Power Cord

After you have completed all connections to the amplifier,

plug the AC line cord into a “live” wall socket.

[26] 12V DC Trigger

To facilitate remote turn-on and turn-off of other compo-

nents (power amplifiers, for example), this 3.5mm mini-

jack provides a constant signal (12 volts DC) whenever the

GTP-860 is fully powered. When the GTP-860 is turned off

(via the front panel switch) or placed in standby mode

(via the “power” button on the remote control), the jack

has no output.

NOTE: We strongly recommend the use of our surge suppresser/

line conditioners, the ADCOM ACE family of products, for sys-

tems with substantial amplifiers and many source components.

The ACE products relieve the GTP-860 from handling large cur-

rent surges, while they protect your entire system by filtering

and conditioning the AC current. In addition to the numerous

heavy duty AC outlets of the ACE-315, the ACE-615 includes

sequential power-up and power-down modes to minimize

“thumps” whenever you turn your system on or off.

[28] IR Input

The IR input allows hook up of an external IR sensor that

sends IR information to the microprocessor in the GTP 860.

This feature can be very useful if the GTP 860 is placed

behind a non transparent door or is used with an after

market remote control system.

[27] Voltage Switch

The GTP-860 can be configured for either 120V or 230V

operation using this switch. Extreme caution must be used

when changing the voltage of the unit, as an incorrect

voltage selection will cause severe damage to the unit.

See your dealer or contact ADCOM for more details

regarding the operation of this switch.

ADCOM GTP-860 OWNER’S MANUAL | 15

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[30]

[31]

[38]

[39]

[37]

[41]

[50]

[51]

[52]

[53]

[56]

[55]

[48]

[49]

[33]

[32]

[47]

[42]

[43]

[44]

[45]

[46]

[54]

[34]

[35]

[40]

[36]

[29] Source selectors

[30] Power button

[31] Input selectors

[32] Mute button

[33] d. range [dynamic range] button

[34] Volume Up/Down buttons

[35] Mode button

[36] Play button

[37] Pause button

[38] Stop button

[39] Arrow buttons

[40] Select button

[41] Direct Access Keypad

[42] Test button

[43] Bal (balance check] button

[44] Backs button

[45] Repeat button

[46] Random button

[47] Tuning Up/Down buttons

[48] Pre/Tune button

[49] RDS button

[50] AM button

16 | ADCOM GTP-860 OWNER’S MANUAL

[51] FM button

[52] M1, M2, M3, M4 [Macro Keys]

[53] Sleep button

[54] Backlight button

[55] Dim button

[56] Main button

REMOTE CONTROL

2.1 Overview of the GRC-800

The GRC-800 remote control is a learning remote control

that is capable of saving commands for all remote controls

in your home theater system. In this way, you may elimi-

The button description that follows distinguishes the func-

tion of each button dependent on the page the remote is

in. The remote is shipped from the factory with ADCOM

commands saved under the main, tuner, and CD pages,

and with important GTP-860 functions such as volume

saved under each page.

nate the confusion of using multiple remotes. Although

such power comes with some added complexity, the com-

plexity is minimal and with some repetition will become

second nature.

Eight Source Select Buttons

The single most important aspect to master about the

GRC-800 remote control is the function of the eight source

select buttons at the top of the remote. These are the

buttons labeled [56] and [29] in the figure on the oppo-

site page. Each of these buttons cause two things to hap-

pen when used. First, they select the corresponding input

on the GTP-860. Second, THESE KEYS REMAP ALL OF THE

OTHER BUTTONS ON THE REMOTE CONTROL. You can think

of each of these buttons as having a page of commands

associated with it. Some buttons, such as volume up and

down, are preprogrammed to operate the GTP-860 for each

source. These buttons can be “written over” if you like,

but default to GTP-860 operations for your convenience.

Most of the GTP-860 remote commands are saved under

the main remote page. Whenever you desire to control

the GTP-860 via remote, you must first ensure the main

page is active. As an example, press [56] main on the

remote control. Now, press the dim button. If your GTP-

860 is on, the brightness of the front panel display chang-

es. Notice also that the main button on your remote illu-

minates. This serves as a reminder that the main remote

page is currently active. Now press the CD button and

then the play button. Notice now that the CD source but-

ton lights. The CD remote page is now active. If you have

an ADCOM CD player, this command will cause an idle CD

to play. Now, press the dim button again. You should note

that CD button does not light. The dim command is not

preprogrammed in the CD remote page. If your GTP-860

is on you will also notice the display does not respond to

this command. Press the [56] main button again to reen-

ter the main remote page. The dim button will now again

change the GTP-860 display.

The ADCOM universal remote controller is preset to oper-

ate all GTP-860 functions (MAIN and TUNER device mode)

and most GCD-700/750 CD functions (CD device mode).

Alkaline batteries are recommended for maximum operat-

ing life. Four AAA (R 03) batteries should be fitted in the

battery compartment at the rear of the remote control.

When replacing batteries, check that they have been put

in correctly, as indicated on the base of the battery

compartment.

Remote Features

[29] Source Selectors (vid 1, vid 2, vid

3, vid 4, vid 5, tuner, CD):

These buttons serve two functions.

• First, they switch inputs on the GTP-860 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 con-

troller. In other words, if you first push the CD device

selector, the remote’s play button generates a command

code for your DVD player. If you then press the vid 5

device selector, the same play button would send a dif-

ferent 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. This will be

covered shortly.)

[30] Power Button

In all modes, this is preprogrammed to turn the GTP-860

on and off.

[31] Input Selector (tape, ext 5.1)

In main mode, these are similar to the source selectors

described above but they switch only GTP-860 inputs.

They DO NOT automatically change the functions of other

remote buttons.

ADCOM GTP-860 OWNER’S MANUAL | 17

[32] Mute Button

In all modes, this button is preprogrammed to mute out-

puts of device. Mute does not affect recordings made

using the Tape outputs but will affect the signal going to

the Preamp Outputs. When the unit is in mute mode, any

adjustment of the Volume Control on the front panel [8]

will release the muting, i.e. the original volume level will

be resumed.

[33] Dynamic Range Button

In main mode, this button is preprogrammed to adjust

dynamic range of Dolby Digital encoded sources.

The d. range button, which can be used only in combina-

tion with a Dolby Digital source, incrementally reduces

the audio track’s dynamic range in four steps (100%, 75%,

50% and 25%) to allow for comfortable listening under

a variety of conditions. The normal or default position

is 100%. To adjust the dynamic range, each consecutive

press of the d. range button will reduce the value in 25%

increments, as shown in the alpha-numeric

display section.

Although we usually prefer to reproduce a source’s full

dynamic range (the difference between very loud and very

soft sounds), it may occasionally be desirable to reduce

the dynamic range. 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

d. range button solves this dilemma by progressively low-

ering the volume of loud peaks while increasing the level

of softer sounds.

[34] Volume Up/Down Buttons

In all modes, these buttons change the master

volume setting of the GTP-860. In all modes except main,

they can be reprogrammed with new commands. The

Volume control does not affect recordings made using the

Tape and Video, or Tape, Video 3 and Video 4 outputs but

will affect the signal going to the Preamp output.

[35] Mode Button

In main mode, this is preprogrammed to cycle through the

surround modes of the GTP-860. Pressing repeatedly will cycle

through Pro Logic, Hall, and Stereo, when available. Refer to

the Surround Mode description [12] for more information.

[36] Play Button

In CD mode, it is preprogrammed for play with an ADCOM

CD player.

[37] Pause Button

In CD mode, it is preprogrammed to pause an ADCOM

CD player.

[38] Stop Button

In CD mode, it is preprogrammed to stop an ADCOM

CD player.

[39] Arrow Buttons

The arrow buttons allow navigation throughout the GTP-

860 OSD (On Screen Display) menus (as well as the menus

of other devices, once the commands are learned). Please

refer to section 3.1 for further explanations on the OSD.

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.

Up arrow/Setup: In main mode, this is preprogrammed to

enter the OSD menu system, as well as scroll up to the

next choice on a menu screen.

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

Down arrow: In main mode, this is preprogrammed to

scroll down to the next choice on a menu screen.

[40] Select Button

In main mode, this is preprogrammed to enter a selection

chosen via the menu system.

[41] Direct Access Keypad

(buttons “1” through “10,” and “+10”):

In CD mode, buttons are preprogrammed as track access

commands for the ADCOM CD player.

18 | ADCOM GTP-860 OWNER’S MANUAL

[42] Test Button

Pressing the test button engages the test signal generator

to allow for adjustment of all speaker levels, so that each

channel can be adjusted for equal loudness at your listen-

ing position. The test signal cycles automatically with 3-

second intervals from Front Left, Center, Front Right, Rear

Right, Back Right, Back Left, Rear Left, to Subwoofer in

continuous cycles. If an adjustment in setting is made for

one of the channels, cycling will pause for 3 seconds after

the adjustment was made. Both display panel and OSD

show which speaker is being fed with the test signal. Use

the cursor down and up buttons to respectively decrease

or increase the level for the current speaker. Press the

test button again to leave or cancel the test mode, any

changes will be memorized automatically.

[49] RDS Button

In main and tuner modes, cycles through the RDS func-

tions of the tuner. Refer to the Display button description

[2] for more information about RDS.

[50] AM Button

In main and tuner mode, buttons are preprogrammed to

select the AM band.

[51] FM Button

In main and tuner mode, buttons are preprogrammed to

select the FM band.

[52] M1, M2, M3, M4 (Macro Keys)

These buttons are programmable for use with any source.

[43] Balance (balance check) Button

In main mode, button is preprogrammed to initiate bal-

ance check procedure. Even when the GTP-860 is cor-

rectly set-up, it may sometimes be desirable to make

minor adjustments to suit the material you are listening

to. Pressing the bal button allows for direct adjustment of

Center, Surround, and Subwoofer levels. Press the bal but-

ton to scroll to the next speaker. Both display panel and

OSD show which channel can be adjusted. Use the Down

and Up arrow buttons to respectively decrease or increase

the level for the current channel.

[44] Backs Button

In all modes, this button is preprogrammed to toggle on

and off the Surround Back speakers.

[45] Repeat Button

In CD mode, this button is preprogrammed as “repeat”

command for ADCOM CD player.

[46] Random Button

In CD mode, this button is preprogrammed as “random”

command for ADCOM CD player.

[47] Tuning Up/Down Buttons

In tuner mode, these buttons are preprogrammed to scan

up or down the GTP-860’s AM or FM band.

[53] Sleep Button

Press sleep to make the GTP-860 automatically switch

off after a preset number of minutes. Pressing the sleep

button once will set the sleep time to 90 minutes, after

which the GTP-860 will automatically switch off into

Standby mode. Sleep mode is shown on the Display Panel.

To adjust the Sleep Delay, press the sleep button, each

consecutive press will reduce the sleep time in 30-minute

increments, as shown in the Display Panel. To cancel the

sleep mode, continue pressing the sleep button until the

sleep time returns to 0 minutes. Pressing the power on

the front panel [1] or Stand-By button will also cancel the

sleep mode.

[54] Backlight Button

No programming capabilities. Button

backlights all keys for eight (8) seconds when pressed.

[55] Dim Button

In main mode, button is preprogrammed to dim GTP-860’s

information display.

[56] Main Button

In all modes, button provides access to the GTP-860. For

instance, to turn on the test tone generator first push [56]

the main button, then push [42] the test button.

[48] Pre/Tune Button

In main and tuner modes, this button toggles between

manual tuning and preset station functions for the tuning

up and down buttons [47].

ADCOM GTP-860 OWNER’S MANUAL | 19

2.2 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 may be somewhat intimi-

dating 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-860 function, under CD to

see what CD commands are preprogrammed, and under

TUNER to see all preprogrammed tuning functions.

NOTES: Direct sunlight or very bright ambient lighting may

affect the operating range and angle for the remote

control handset.

The infrared remote control command receiver, located to

the right of the Power button, receives commands from

the remote control. There must be a clear line-of-sight

path from the remote control to this window; if that path

is obstructed, the remote control may not work.

BUTTONS

MAIN

VID 1

VID 2

VID 3

VID 4

VID 5

TUNER

POWER

MUTE

VOLUME UP

VOLUME DOWN

TAPE

EXT 5.1

Main

Selects Main

Selects Video 1

Selects Video 2

Selects Video 3

Selects Video 4

Selects Video 5

Selects Tuner

Selects CD

Power On/Off & Macro

Mute Volume

Master Volume Up

Master Volume Down

Selects Tape

Selects Ext 5.1

Selects Main

Selects Video 1

Selects Video 2

Selects Video 3

Selects Video 4

Selects Video 5

Selects Tuner

Selects CD

Power On/Off

Mute Volume

Master Volume Up

Master Volume Down

Programmable

Tuner

Selects Main

Selects Video 1

Selects Video 2

Selects Video 3

Selects Video 4

Selects Video 5

Selects Tuner

Selects CD

Power On/Off

Mute Volume

Master Volume Up

Master Volume Down

Programmable

All Others

Selects Main

Selects Video 1

Selects Video 2

Selects Video 3

Selects Video 4

Selects Video 5

Selects Tuner

Selects CD

Power On/Off

Mute Volume

Master Volume Up

Master Volume Down

Programmable

D. RANGE

STOP

MODE

PAUSE

PLAY

SETUP/UP

20 | ADCOM GTP-860 OWNER’S MANUAL

Dynamic Range adjust

Not programmable

Surround Mode Select

Not programmable

Programmable

Stop CD

Surround Mode Select

Pause CD

Play CD

Programmable

Surround Mode Select

Programmable

Surround Mode Select

Programmable

continued on opposite

BUTTONS

Main

Tuner

All Others

RIGHT

DOWN

LEFT

SELECT

+10

OSD Right Select

OSD Scroll Down

OSD Left Select

OSD “Enter” Select

Not programmable

Skip Ahead

Programmable

Skip Back

Programmable

Track 1

Track 2

Track 3

Track 4

Track 5

Track 6

Track 7

Track 8

Track 9

Track 10

+10

Programmable

TEST

BAL

BACKS

REPEAT

RANDOM

PRE/TUNE

RDS

TUNING UP

TUNING DOWN

Test Tone On/Off

Selects Channel Trims

Surr Backs On/Off

Not programmable

Selects Presets/Tuner

Enables RDS

Tuning Up

Tuning Down

For Macro Use

Programmable

Surr Backs On/Off

Repeat Current Track

Random Play

Programmable

For Macro Use

Programmable

Surr Backs On/Off

Programmable

Selects AM

Selects FM

Selects Tune/Preset

Enables RDS

Tuning UP

Tuning Down

For Macro Use

Programmable

Surr Backs On/Off

Programmable

For Macro Use

SLEEP

BLACKLIGHT

DIM

Sleep

Backlights All Buttons

Dims Display

Sleep

Backlights All Buttons

Programmable

Sleep

Backlights All Buttons

Programmable

ADCOM GTP-860 OWNER’S MANUAL | 21

Sleep

Backlights All Buttons

Programmable

2.3 Programming Your ADCOM GRC-800 Remote Controller

The ADCOM universal remote controller operates eight dif-

ferent audio/video components. As you’ve already seen,

it’s preprogrammed to control ADCOM’s GTP-860 Preamp/

Tuner and the GCD-700/750 CD players. In addition, it

has seven “component memory banks” available so you

can program the remote to learn commands for your DVD

player, satellite box, laser disc 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-860 functions (volume up/down,

changing surround modes, etc.), follow these easy steps.

1. Press the main source selector button. This tells the

remote that you want to use GTP-860 preprogrammed

commands. The main button will flash red to tell you it

understands.

2. Press the appropriate function button (volume up, vol-

ume down, etc.) If you’ve selected a button that actually

triggers a GTP-860 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 pre-

programmed.

command codes, while you’re in main mode. This safety feature

assures you that you will always be able to fully enjoy the GTP-

860’s capabilities.

Programming Your Own Commands

You can supplement preprogrammed commands with com-

mands to operate other components. Before you begin to

follow these steps, note the status LED located at the top

left corner 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 deciding 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

Video 1 source, press the vid 1 source selector first. You

can “teach” your remote new commands for any function

button (except backlight) after you’ve selected vid 1, vid

2, vid 3, vid 4, vid 5, tuner, or CD.

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 buttons simultaneously. Hold both buttons until

the status LED turns orange and the source selector but-

ton glows red. Both indicators should remain lit.

(Review the table above to see which buttons are prepro-

grammed.)

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 will 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 prepro-

grammed 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-860

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 compo-

nent’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.

22 | ADCOM GTP-860 OWNER’S MANUAL

Repeat Steps 3 through 5 for any other commands you want

to teach your ADCOM remote for that source component.

Deleting All The Programmed Commands for Every Source Component

Save the commands you’ve just programmed into the

ADCOM remote by pressing and holding the appropriate

source selector and select 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

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.

NOTE: This procedure erases every programmed command

accessed under the selected vid 1, vid 2, vid 3, vid 4, vid 5,

tuner, and CD input selectors. Make sure you really want to do

this before following the step below.

1. Press and hold the VID 5 input selector and the back-

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.

All LEDs will then turn off, indicating that every learned

command in the ADCOM remote has been erased.

Macro Commands

“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.

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 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

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 con-

stant orange, indicating that all the learned information

for the device mode selected has been erased.

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, vid1, vid 2, and

vid 3 in Group 1; vid 4, vid 5, tuner, and CD 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, vid 1, vid 2, or vid 3

modes. Similarly, you will program “Group 2” macros by

pushing vid 4 first and can use them whenever the vid 4,

vid 5, tuner, or CD inputs are active.

3. To exit this feature, press and hold the ADCOM remote’s

source selector and select buttons simultaneously. The

orange status LED and the source selector button will

flash twice and then turn off.

ADCOM GTP-860 OWNER’S MANUAL | 23

d.ra nge

setu p

mute

2 3

play

volu me

m1 m2

m3 m 4

back lig ht

+10

mode

paus e

stop

sleep

random

ext5.1

powe r

main vid 3vid 2vid 1

tune r

tape

vid

5vid 4

dim

test

bal

back s

AM pr e/ tun e

RDSFM tuni ng

repe at

G R C - 8 0 0

sele ct

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, vid 1, vid 2, or vid 3 sources are selected at the time you

select that macro. If you’ve programmed a Group 2 macro, it

will send out an identical command sequence whenever vid 4,

vid 5, tuner, or CD inputs are selected.

2.4 Programming Macro Initiator Buttons:

1. Press either the Group 1 or Group 2 source selector button

(main or vid 4 respectively) and the mute button simultane-

ously. Hold both buttons until the red status LED and the input

selector button remain lighted.

2. Press the macro initiator button (power, m1, 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 macro 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 pro-

gramming 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.

Deleting Macro Initiator Buttons:

1. Press either the Group 1 or Group 2 source selector button

(main or vid 4 respectively) and the mute button simultane-

ously. Hold both buttons until the red status LED and the input

selector button remain lighted.

2. Press the macro initiator button (power, m1, m2, m3 or m4)

you wish to delete.

24 | ADCOM GTP-860 OWNER’S MANUAL

3. Press the tuning up button. The red status LED and input

selector button will blink twice to confirm deletion of the

macro.

clearance

FUNCTION and DATA list for GTP-860(ADCOM) B: LSB first D: decimal Discrete (Direct Access) Custom Code: 1Ah E8h Code Type: NEC2

Function Data(B) D Function Data(B) D

* MAIN POWER ON 0010 1010 84 * MAIN POWER OFF 1010 1010 85 * DOLBY PRO LOGIC 0111 0000 14 * SYMPHONY HALL 1111 0000 15 * 2 CHANNEL STEREO 1111 0010 79 * 5 CHANNEL STEREO 0111 0010 78 * DOLBY PL II MOVIE 0011 1010 92 * DOLBY PL II MUSIC 1011 1010 93 * DOLBY PL II PANORAMA 0111 1010 94 * DOLBY PL II MATRIX 1111 1010 95 * Delay Front 5mS 0000 0000 0 * Delay Front 4mS 1000 0000 1 * Delay Front 3mS 0100 0000 2 * Delay Front 2mS 1100 0000 3 * Delay Front 1mS 0000 0010 64 * Delay Front None 1000 0010 65 * Dynamic Range Normal 0100 0010 66 * Dynamic Range 75% 1100 0010 67 * Dynamic Range 50% 0110 0010 70 * Dynamic Range 25% 1110 0010 71

* Delay Rear 15mS 0110 0000 6 * Delay Rear 10mS 1110 0000 7 * Delay Rear 5mS 0010 0010 68 * Delay Rear None 1010 0010 69 * Center Trim + 0001 0000 8 * Center Trim - 1001 0000 9 * Rear Left Trim + 0101 0000 10 * Rear Left Trim - 1101 0000 11 * Rear Right Trim + 0001 0010 72 * Rear Right Trim - 1001 0010 73 * Subwoofer Trim + 0101 0010 74 * Subwoofer Trim - 1101 0010 75 * Back Left Trim + 0011 1000 28 * Back Left Trim - 1011 1000 29 * Back Right Trim + 0111 1000 30 * Back Right Trim - 1111 1000 31 * OSD Bypass ON 0110 1000 22 * OSD Bypass OFF 1110 1000 23 * Mute ON 0110 0001 86 * Mute OFF 1110 0001 87

* OSD bypass is not available on all units.

Placement of your GTP-860

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 GTP-860 (and other

audio/video components) away from moisture and out of direct sunlight.

Bear in mind that the GTP-860’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 inches of free space behind the

GTP-860 for maximum flexibility. A distance of 1/2” should be maintained

around the GTP-860 for ventilation. Keep your GTP-860 in a room where

temperatures remain fairly moderate, and never cover it with table cloths,

curtains, newspapers, etc., to avoid potential overheating.

ADCOM GTP-860 OWNER’S MANUAL | 25

OPERATION & SETUP

SETUP

1 INPUT SETTINGS

2 CHANNEL BALANCE 3 CHANNEL DELAYS 4 SPEAKER SETTINGS 5 EXIT

After connecting your home theater, you may elect to

configure the GTP-860 to the specific speaker arrange-

ment and dimensions of your system. The procedures

described in this section demonstrate how to use the GTP-

860’s on screen display to enter this information. Once

complete, the GTP-860 stores this information so that

these tasks need only be repeated if speakers are changed

or substantially repositioned.

3.1 On Screen Display (OSD)

The GTP-860 is equipped with an elaborate On Screen

Display facility (OSD). As the OSD is an essential tool to

set up the various parameters for Surround sound cor-

rectly it is recommended that you connect your monitor

or television to the GTP-860.

Depending on your source and/or the television system

used you must first select the correct video system. If the

OSD rolls over the screen you must select another system:

PAL or NTSC.

While pressing the Memory button [4] on the front panel,

press the Video 1 input selector button [11] repeatedly

until the desired system is shown in the display area. The

OSD can be engaged by pressing main and then setup

buttons on the remote control. The SETUP Menu will

appear as below:

Select is used to choose the desired option. Otherwise,

highlight EXIT and press Select to leave.

The OSD menus are at maximum two “layers” deep; this

means that from the main menu (layer 1) you can select a

sub menu (layer 2).

3.2 Channel Balance

The output levels of each of the speakers connected to

the GTP-860 may need to be adjusted so that there is

an even balance of sound from all the speakers in the

system. If, for instance, the relative volume level to the

Left and Right speakers and the Center speaker is set too

low, most of dialogue may be difficult to follow. If, on

the other hand it is set too loud, the overall balance will

sound unnatural.

To adjust the channel balance the GTP-860 is equipped

with a Test button [42] to help assess the loudness levels

of each speaker. Before adjusting the channel balance

level make sure the master volume is turned down to a

normal listening level.

Pressing the Test button engages the Test signal generator

to allow for adjustment of all speaker levels, so that each

channel can be adjusted for equal loudness at your listen-

ing position. The test signal scrolls automatically with 3

second intervals from Left, Center, Right, Rear Right,Back

Right, Back Left, Rear Left, to Subwoofer in continuous

cycles. If an adjustment in setting is made for one of

the channels, scrolling will stop until 3 seconds after the

adjustment was made. Both the display panel and OSD

show which speaker is being fed with the test signal. Use

the Left and Right arrow buttons to increase or decrease

the level for the current speaker.

Use the cursor buttons on the remote control to navigate,

select the desired menu and options, then press Select

[40] to access. The Up and Down arrow buttons are used

to navigate and select an option (indicated by highlighting

the available option). The Left or Right arrow buttons are

used to change a setting from the highlighted section, and

26 | ADCOM GTP-860 OWNER’S MANUAL

The Channel Balance for each speaker can be adjusted

in 1dB increments. (The back channels are adjusted in 2

dB increments.) Continue to calibrate the level for each

speaker until equal loudness is achieved at your listening

position. A more accurate adjustment can be made using

a sound level meter, if available. Set the meter to “Slow”

and “C-weighted” modes and re-check the settings with

the meter placed in several different positions in the gen-

eral listening area.

Select the channel for which you wish to adjust and set

the level so that it matches the other channels. For best

results, start with the Left channel set at 0dB and to

SETUP

1 INPUT SETTINGS

2 CHANNEL BALANCE 3 CHANNEL DELAYS 4 SPEAKER SETTINGS 5 EXIT

INPUT SETTINGS

AUDIO

VIDEO

MODE

5 CH STEREO

DYNAMIC RANGE

N/A CENTER WIDTH=N/A DIMENSION=N/A DO NOT SAVE AND EXIT SAVE AND EXIT

CHANNEL BALANCE LEFT : 0dB

CENTER : - 3dB

RIGHT

: 0dB REAR R : 0dB BACK R : 0dB BACK L : 0dB REAR L : 0dB SUB

: 0dB

DO NOT SAVE AND EXIT SAVE AND EXIT

CHANNEL DELAYS

CENTER

: 1ms

SURROUNDS : 5ms

DO NOT SAVE AND EXIT SAVE AND EXIT

SETUP

1 INPUT SETTINGS

2 CHANNEL BALANCE 3 CHANNEL DELAYS 4 SPEAKER SETTINGS 5 EXIT

CHANNEL DELAYS

CENTER

: 1ms

SURROUNDS : 5ms

DO NOT SAVE AND EXIT SAVE AND EXIT

match the other channels to it. Normally, if the Right

speaker is located at the same distance from the listening

position to the Left speaker it should be set at the same

level as the Left speaker.

Highlight SAVE & EXIT and press Select to save the set-

tings and return to the SETUP menu.

The Channel Balance menu can also be accessed directly

with the bal button [39] on the remote control.

Press the Test button again to leave or cancel the Test

mode; any changes will be memorized

automatically.

NOTE: There is no output in the Subwoofer during noise

sequencer operation; therefore it is difficult to adjust the level

in test mode. The Subwoofer level can be adjusted in the OSD

setup menu with musical input.

After setting the balance with the Test function, you may

wish to make further adjustments by ear, depending on

the material you are listening to. There are two ways to

access the Channel Balance screen, which allows you to

adjust levels while monitoring a source.

Highlight CHANNEL BALANCE in the SETUP menu and press

Select on the remote. You will see a screen similar to the

following:

3.3 Channel Delays

For the best surround sound performance it is important

that sound from all speakers reach the listener’s ears

at the same time. Because the surround/rear speakers

are usually closer to the listener than the front speak-

ers, there is a tendency for the ear to localize sounds

to the rear, because the ear takes most notice of the

sounds that arrive at the head first. Similarly, the center

speaker is often closer to the listener than the front left

and right speakers. To compensate for this, the GTP-860

can slightly delay the audio sent to the center and rear

(closer) speakers. In this way, when playing Dolby Digital

or Dolby Pro Logic soundtracks, the sound from all speak-

ers arrives uniformly at the listening position as intended

by the film’s producer.

Each millisecond corresponds approximately with 1 foot or 30.5 centimeters.

To set the center channel delay time:

The GTP-860 allows the volume of each speaker to be

individually trimmed so that none of the speakers domi-

nates in playback and detracts from the surround illusion.

Highlight the speaker you wish to adjust, using the Up and

Down arrow buttons. Use the Left arrow button to lower

the output level, and the Right arrow button to raise the

output level. Each speaker can be adjusted within a -10

to +10dB range, in steps of 1dB. The back channels can be

adjusted within a -60 to +10 dB range, in steps of 2dB.

Call up the SETUP menu of the On Screen Display. Select the Channel Delays menu:

Choose CENTER and select the desired delay time (1, 2, 3, 4 or 5ms).

To set the surround channel delay time:

Use the Up or Down arrow buttons [39] to highlight the Surrrounds.

ADCOM GTP-860 OWNER’S MANUAL | 27

Scroll through the preset delay time options and select

surround

rear left

surround

rear right

front left

front right

center

surround

back right

surround back left

the desired time.

When both delays have been entered, choose “SAVE &

EXIT” to save the settings and return to the Main Menu.

In Dolby Digital surround mode, the rear channel delay

time can be set from 0ms to 15ms with 1ms increments.

The center channel can also be delayed up to 5ms, in 1ms

steps.

In Dolby Pro Logic surround mode, the rear channel delay

time can be set from 15ms to 30ms and 1ms per step.

For other modes including DTS, the channel delay time

cannot be adjusted.

Determining Delay Values:

In these cases, set the center channel delay to 0ms. The

center channel delay time adjustment is only available in

Dolby Digital surround mode.

Now, measure the distance from the listening position to

either the left or right rear speaker. Subtract the rear

speaker distance from the front speaker distance. The

resulting distance is equivalent to the delay in millisec-

onds for the rear delay setting. For example, if your rear

speaker distance is 6 feet (1.8 m) and the front distance

is 12 feet (3.7 m), the correct rear channel delay setting

is 6 milliseconds. Again, set the rear channel delay to 0ms

if the rear channels are further from the listening position

than the front speakers.

3.4 Speaker Settings

Four modes are available to the GTP-860’s setup: On or

Off, and Large or Small.

The On mode is used when the speaker is present. The

Off mode is used when a speaker is not present. Front

speakers are assumed to be present, so they cannot be

turned off. Center, Surround, and Subwoofer speakers are

optional, and these are the speakers you must describe to

the GTP-860. Audio signals intended for speakers which

are not present are redirected to the main speakers.

Measure the distance from the listening position to the

center speaker and to one of the front speakers. Subtract

the center channel distance from the front left or right

channel distance. For example, if the front speakers are

12 feet (3.7 m) from the listening position and the center

speaker is 10 feet (3.0 m), the difference is 2 feet (0.6

m). For this example the center channel delay is set to 2

milliseconds or ms.

The GTP-860 can delay the center channel output up to

5 milliseconds and thus compensates for center channel

speakers that are up to 5 feet (1.5 m) closer to the listen-

ing position than the front left and right speakers.

In rare system setups, the center channel speaker is actu-

ally further away than the front left and right speakers.

28 | ADCOM GTP-860 OWNER’S MANUAL

When a speaker is On, it can be set as Large or Small. The

Large mode is used when the speaker is full range and

capable of reproducing the entire audible frequency spec-

trum from 20Hz to 20kHz. The Small mode is used when

the speaker is not capable of reproducing the deepest

bass portion of the audio frequency 20Hz to 100Hz. When

a speaker is set to small, the low frequencies intended for

that speaker are redirected either to the Front speakers

or the Subwoofer.

For best results, you should consider using a center

speaker. Ideally it should be the same type as the left and

right speakers. Using a separate center channel speaker

will allow the dialogue to cut through even the biggest

sound effects and musical scores. Having the sound spread

across three front speakers also stabilizes the stereo

image, making the usable listening area much bigger.

Installing surround speakers will greatly enhance the sur-

round experience as these add considerably to the overall

“ambiance.” Dolby Pro Logic encoded material is deliber-

ately limited in dynamic range and frequency bandwidth

SETUP

1 INPUT SETTINGS

2 CHANNEL BALANCE 3 CHANNEL DELAYS 4 SPEAKER SETTINGS 5 EXIT

INPUT SETTINGS

AUDIO

VIDEO

MODE

5 CH STEREO

DYNAMIC RANGE

N/A CENTER WIDTH=N/A DIMENSION=N/A DO NOT SAVE AND EXIT SAVE AND EXIT

CHANNEL BALANCE LEFT

: 0dB

CENTER : - 3dB

RIGHT

: 0dB REAR R : 0dB BACK R : 0dB BACK L : 0dB REAR L : 0dB SUB

: 0dB

DO NOT SAVE AND EXIT SAVE AND EXIT

CHANNEL DELAYS

CENTER

: 1ms

SURROUNDS : 5ms

DO NOT SAVE AND EXIT SAVE AND EXIT

SPEAKER SETTINGS

PRESET :

1 MAIN : LARGE

CENTER : OFF

SURROUND : LARGE SUBWOOFER : ON

DO NOT SAVE AND EXIT SAVE AND EXIT

INPUT SETTINGS

AUDIO

VIDEO

MODE

STEREO

DYNAMIC RANGE

N/A CENTER WIDTH=N/A DIMENSION=N/A DO NOT SAVE AND EXIT SAVE AND EXIT

for the surround channel and thus only requires speakers

of far lesser capabilities compared to the front channels.

Dolby Digital, however, is a full range system with two

independent surround channels and with dynamics equal

to that of the front channels. For this reason it is advis-

able to choose loudspeakers which are similar in power

handling and performance capability to those of the front

channels. If you are using only one pair of surround speak-

ers, make sure to connect them to the Surround Rear

outputs. If you choose to install another pair of surround

speakers, locate them behind your listening position, and

connect them to the Surround Back outputs. Surround

Back channels add to the spaciousness and coherence of

the sound field, but the Surround Rear channels must be

present for the desired effect.

Many film soundtracks rely heavily on very low frequency

sound effects which are difficult for normal or smaller

hi-fi speakers to reproduce. To faithfully reproduce these

low frequencies you can use a specially designed low

frequency loudspeaker with its own built-in amplifier

(“active subwoofer”). Because it is difficult to hear which

direction very low frequencies are coming from, you only

normally need one subwoofer and this can be placed

virtually anywhere in the room. Dolby Digital uses a dedi-

cated Low Frequency Effects (LFE) channel. If a subwoofer

has been selected, the LFE channel will be fed to the sub-

woofer output.

First you need to indicate which speakers are present in

your system. Besides the Main speakers (Left & Right),

these can include a Center, two Surround Speakers and a

Subwoofer.

Call up the SETUP menu of the On Screen Display.

Preset 1: Default Setting / Adjustment

Main : LARGE / No Adjustment

Center : LARGE / OFF

Surround : LARGE / OFF

Subwoofer : ON / OFF

In this mode, all speaker channels are large, i.e. full

range, and the home theater system has a subwoofer. This

preset is particularly useful for large rooms.

Preset 2: Default Setting / Adjustment

Main : LARGE / No Adjustment

Center : SMALL / OFF

Surround : SMALL / OFF

Subwoofer : OFF / ON

This preset is useful for a home theater system that does

not have full range speakers. The bass frequencies from

the center and surround channels are redirected to the

main speakers.

Preset 3: Default Setting / Adjustment

Main : SMALL / No Adjustment

Center : SMALL / OFF

Surround : SMALL / OFF

Subwoofer : ON / No Adjustment

This preset is ideal for those systems using 5 small speak-

ers combined with a subwoofer. The bass frequencies from

each of these 5 channels are redirected to the subwoofer.

The Surround settings affect both the Surround Rear and

Surround Back speakers.

Select the SPEAKER SETTINGS.

Highlight PRESET and use the Left and Right arrow buttons

to select the preset (PRESET 1, 2 or 3) that best applies

to your setup. Select a preset based on speaker sizes,

then use the Up and Down arrow buttons to adjust for the

absence of Center, Surround speakers, or subwoofer.

ADCOM GTP-860 OWNER’S MANUAL | 29

3.5 Surround Speaker Placement

surround

rear left

surround rear right

front left

front right

center

surround

rear left

surround

rear right

front left

front right

center

surround

back right

surround back left

surround

rear left

surround

rear right

front left

front right

center

surround

back right

surround

back left

This speaker setting is preferred if you are not using surround backs.

This is the preferred speaker setting if you are using surround backs.

30 | ADCOM GTP-860 OWNER’S MANUAL

This speaker setting is preferred if you are using dipoles for your surround rears.

2-3 ft.

surround

rear left

Note: If space permits, install surrounds

SETUP

1 INPUT SETTINGS

2 CHANNEL BALANCE 3 CHANNEL DELAYS 4 SPEAKER SETTINGS 5 EXIT

INPUT SETTINGS

AUDIO

VIDEO

MODE

5 CH STEREO

DYNAMIC RANGE

N/A CENTER WIDTH=N/A DIMENSION=N/A DO NOT SAVE AND EXIT SAVE AND EXIT

2-3 feet above viewers.This helps to minimize localization effects.

3.6 Input Settings

Input Settings shows information about the current state

of operation of the GTP-860, and repeats much of the

same information shown on the GTP-860’s front panel.

This menu should be the only part of the on-screen display

you might elect to use regularly after setup is complete,

as it allows you to easily see the operating mode from the

listening position.

AUDIO = identifies the selected audio input

VIDEO = identifies the selected video input

MODE = indicates the surround mode of the selected input

(DOLBY DIGITAL, DTS, PRO LOGIC II, HALL, STEREO, and

5 CH STEREO).

Highlight INPUT SETTINGS in the SETUP menu and press

Select on the remote. You will see a screen similar to the

following :

The available choices in each of the fields can be selected

with the Left or Right arrow buttons on the remote; con-

firm the choice with Select button.

DYNAMIC RANGE = indicates the dynamic range currently

selected (100%, 75%, 50% and 25%) in Dolby Digital mode

only, or N/A for the other modes.

Dimension = This parameter is used when listening in

Prologic II Music mode, it changes the level balance from

front speakers to back speakers, much the same way the

fader adjust works in some car audio systems.

Center Width = This adjustment is used when listening to

Prologic II Music Mode. It changes the amount of sound

coming out of the center speaker. Adjust this parameter

for best over all imaging between the front left/Right and

center speaker.

Highlight SAVE & EXIT and press Select to save the altered

settings and return to the SETUP menu. Otherwise, select

DO NOT SAVE & EXIT to leave without saving any channel.

ADCOM GTP-860 OWNER’S MANUAL | 31

RESOLVING PROBLEMS

Use the chart on the opposite page to solve common situations that don’t require professional attention. If the steps stated in POSSIBLE SOLUTION do not resolve your problem, then please contact your ADCOM Dealer or call the ADCOM Customer Service Department. Any problems not covered here should be brought to the attention of your ADCOM Dealer or ADCOM Customer Service Department.

A special note on “hum:” When there is a low-volume “hum” audible throughout your speakers, even with the main volume turned all the way down, you have a common phenomenon known as a “ground loop.” A ground loop is basically a difference in ground voltages between two or more components which are connected electrically and which creates multiple current paths where there must only be one. This difference in potentials creates a 60Hz low-level sound (approximately a low A), that seems to “hum.”

It can be caused by adding new components to your system, but that does not imply there is anything electrically wrong with any new component. With the advent of audio/video and home theater systems, the problem has become commonplace. Generally, the cause is the Cable-TV incoming signal line. This new incoming line may add an additional ground at a different potential to the AC line ground of your other equipment (refer to Note I and 2, to troubleshoot a hum problem).

Note 1: Cable TV systems can sometimes contribute to ground loop problems which cause “hum.” To determine if your cable system is the contributing factor, disconnect the Cable-TV incoming signal line (round, 75Ω) at the wall, or the first component the cable is connected to (i.e. the cable box, or VCR). If the hum is no longer present, you must insert a “75Ω Ground Loop Isolator” before reconnecting the line. You should check with your ADCOM Dealer to obtain one. If the “75Ω Ground Loop Isolator” works only partially or not at all, then please read Note 2 to complete the troubleshooting procedure.

Note 2: Make sure that the power amplifier is at least 6” from the Preamp and/or Processor. Usually putting another component between them is sufficient to minimize the hum. If this does not reduce the hum, turn the system off and disconnect all Inputs from the amplifier. If the hum still persists, then your Dealer or Service Center must examine the amplifier. If the hum disappears, try another set of RCA cables. Connect one RCA cable at a time to see if one specific cable is responsible. If any or all cables cause the hum to appear, then the preamp or processor should be evaluated for proper operation by your Dealer or Authorized Service Center.

Troubleshooting Tip

Your GTP-860’s circuitry is built around advanced microprocessors. The GTP-860 may exhibit

occasional anomalies arising from AC line surges, etc. If you experience unexpected behavior,

or if the GTP-860 “locks up” and does not respond to control input, reset it by turning the front

power switch off. (Do not use the remote control’s “power” button.) Wait 10 seconds and then

turn the GTP-860 on. This will reset the internal control circuitry and solve most problems.

32 | ADCOM GTP-860 OWNER’S MANUAL

SYMPTOM POSSIBLE REASON POSSIBLE SOLUTION

No sound

No sound on one channel

No sound on surround channels

No sound on center channel

“Dolby Digital” OR “DTS” autodetection function does not work

• Power AC lead unplugged or power not switched on

• Tape Monitor selected

• Mute on

• Power Amplifier not on

• Speaker not properly connected or damaged.

• Input lead disconnected or damaged

• In Setup “OFF” for surround speaker selected

• No surround mode selected

• Mono sound source

• Speakers not properly connected

• Surround volume level too low

• In Setup “OFF” for center speaker selected

• Speaker not connected properly

• Center volume level set too low

• Source not connected using digital input

• Bit Stream is PCM

• Check if AC lead is plugged in and power switched on

• De-select Tape Monitor mode

• Switch off Mute

• Turn on the Power Amplifier

• Check connections and speakers

• Check leads and connections

• Select appropriate Surround mode (large or small)

• Select a Surround Mode

• Test system with Stereo or Dolby Surround material

• Check speakers and connections

• Increase surround volume level

• Select appropriate Center mode (large or small)

• Check speaker and connection

• Increase center volume level

• Connect digital output of source to GTP-860

• Check source material

Weak bass/Diffuse stereo image

Remote control handset not working

No sound with tuner

Noise, hiss on AM and FM

Distortion on FM

Whistles or buzzes on FM & AM

Whistles or buzzes on AM

• Speakers wired out of phase

• Batteries dead, or incorrectly inserted

• IR transmitter or receiver windows obstructed

• IR receiver in direct sun or very bright ambient light

• Antenna leads incorrectly connected

• Station not selected or weak signal with FM Mute on.

• Weak signal

• Multi-path signals or interfe ence from another station

• Interference from other electrical sources - computers, games consoles

• Interference from fluorescent lighting or electrical motor

• Check connections to all speakers in the system

• Check or replace batteries

• Remove obstruction

• Place unit away from direct sun, reduce amount of ambient light

• Check antenna connections to preamplifier

• Re-tune or switch off FM Mute

• Check station tuning. Adjust or replace antenna.

• Check station tuning. Adjust or replace antenna

• Check station tuning. Switch off or move the source of the electrical noise

• Check station tuning. Adjust or replace AM antenna

No RDS name (PS)

• Station signal too weak.

• Station not transmitting RDS data

• Check station tuning. Adjust or replace antenna

• No remedy

ADCOM GTP-860 OWNER’S MANUAL | 33

CARING FOR YOUR GTP-860

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

Do not spray or pour liquids of any kind directly onto the GTP-860.

SERVICING

ADCOM has a Technical Service Department to answer questions pertinent to the installation and operation of your unit. In the event of difculty, please contact us for prompt advice. 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 inquires to:

ADCOM Service 8551 East Anderson Drive, Suite 105 Scottsdale, Arizona 85255 USA

Phone, Fax or Email inquires to:

Voice: (480) 607-2277 Fax: (480) 348-9876 Monday through Friday 9:00 AM to 5:00 PM MST Email: service@adcom.com

For Fax inquires, please include a return Fax number for the reply. When calling or writing about your ADCOM product, 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 any communications to us, please include a daytime phone number where we may reach you. 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. UNDER NO CIRCUMSTANCES SHOULD YOUR UNIT BE SHIPPED TO OUR FACTORY WITHOUT PRIOR

AUTHORIZATION, OR PACKED IN OTHER THAN ITS ORIGINAL CARTON AND FILLERS.

If the original shipping carton and its llers have been lost, discarded, or damaged, a duplicate carton may be obtained from our Service 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 packing was not designed to withstand rough Parcel Post handling.

FREIGHT COLLECT SHIPMENTS WILL NOT BE ACCEPTED

34 | ADCOM GTP-860 OWNER’S MANUAL

UNDER ANY CIRCUMSTANCES.

GTP-860 SPECIFICATIONS

Input Impedance

Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50k Ω

Video . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Ω

Output Impedance

Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320 Ω

Video . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Ω

Frequency Response

20Hz to 20kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 0.5dB

THD+Noise at Rated Output

20Hz to 20kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≤ 0.01%

IM Distortion

CCIF at 15kHz and 16kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≥ 0.009%

Signal to Noise Ratio (at 1kHz “A” weighted)

Ref. to 1V input, max output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . > 95dB

Sensitivity 1 volt output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220mV

Subwoofer Crossover Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100Hz

Crosstalk (@ 1kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . > 80dB

Maximum Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.6V

Tone Controls (L and R front only)

Bass effective below . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200Hz

Bass Max Gain/Cut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 10dB @ 20Hz

Treble effective above . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.3kHz

Treble Max Gain/Cut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 10dB @ 20Hz

FM Tuner

Usable Mono Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15dBµ

50 dB Mono Quieting Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22dBµ

50 dB Stereo Quieting Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39dBµ

A-wtd. Signal to Noise Ratio

Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75dB

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

Stereo Separation (1 kHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43dB

Alternate Channel Selectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >50dB

Capture Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2dB

General

Power (user selectable 120/230 VAC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120VAC/50-6OHz

Chassis Dimension. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53/16” (132mm) x 17” (432mm) x 133/4” (349mm)

Maximum Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56/16” (137mm) x 17” (432mm) x 15” (381mm)

Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 lbs. (9.1kg)

Weight, Packed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 lbs. (10.4kg)

ADCOM GTP-860 OWNER’S MANUAL | 35

ADCOM

A division of Klein Technology Group, LLC 8551 East Anderson Drive, Suite 105 Scottsdale, Arizona 85255 Voice: (480) 607-2277 Fax: (480) 348-9876 http://www.adcom.com

GTP860_manual_v1

Adcom GTP-860 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual