Adcom GTP-860II User Manual

GTP-860II

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Digital Processing Tuner/Preamplier

3ADCOM GTP-860 II Owner’s Manual |

ABOUT ADCOM

PERFORMANCE AND VALUE

In the world of high performance electronics, Adcom has done the impossible: make state-of-

the-art components that are easy to use at an affordable price. In doing this, Adcom has created

a revolution in the world of consumer electronics. By creating some of the most renowned com-

ponents and offering them at affordable prices, Adcom has enabled more people to enjoy their

favorite music and movies at top performance levels. Perhaps Audio Magazine said it best: “No

competing company I know can provide a similar balance of sound quality, power and afford-

ability.”

AWARD WINNING

Innovation is our stronghold, and our numerous awards year after year prove that we’re never

satisfied to rest on our reputation. From our legendary high current amplifiers to our state-of-the-

art digital processors, Adcom components consistently impress even the most demanding audi-

ences. Adcom components have won over 25 Product of the Year and Special Recognition citations

from Audio Video International, 3 Diapason D’Or Awards, 7 Consumer Electronics Show Design and

Engineering Awards, and have appeared on Stereophile’s “Recommended Components” lists over

70 times since 1988. A reputation worth its weight in gold.

ENGINEERING PASSION

Every Adcom component is not only designed to reproduce the highest quality sound and picture,

but to also deliver the greatest possible value. It is our engineers’ passion for perfection that has

enabled our components to be judged the equivalent of others costing two, three, or even five

times as much. Our engineering team consistently strives to develop and design products that

will exceed your expectations. Our goal at Adcom is to let more consumers hear high-end quality

sound and see high-end video without paying high-end prices.

All Adcom components are the result of a long-standing dedication to innovation, quality, simplic-

ity and value. Adcom, we have the power, and now so do you.

ADCOM Telephone: [phone]

A division of Klein Technology Group, LLC Fax: [phone]

8541 East Anderson Drive Email: [e-mail]

Scottsdale, Arizona 85255 USA Web: www.adcom.com

ADCOM is a registered trademark of Klein Technology Group, LLC.

Copyright © 2003 Klein Technology Group, LLC. All rights reserved. No part of this manual may be reproduced

or electronically transmitted without the express written consent of Klein Technology Group, LLC.

| ADCOM GTP-860 II Owner’s Manual2

TABLE OF CONTENTS

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

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

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

DESCRIPTION OF UNIT

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

1.1 INTERFACE OVERVIEW . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. 6-9

REAR PANEL DRAWING .. .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. 10

1.2 INPUTS & OUTPUTS SYSTEM CONNECTIONS . . . . . .. .. .. . . . . . 10-13

REMOTE CONTROL DRAWING . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . 14

2.1 OVERVIEW OF THE GRC-800 . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . 15-17

2.2 REMOTE FUNCTION TABLE .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. 18-19

2.3 PROGRAMMING YOUR REMOTE CONTROL . . . .. .. .. .. . . . .. .. . 20-21

2.4 PROGRAMMING MACRO BUTTONS . .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . 21

2.5 DISCRETE CUSTOM CODES FOR INSTALLERS . .. .. .. .. . . . .. .. .. . 22

SPEAKER PLACEMENT DRAWINGS.. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . 23

OPERATION & SETUP

3.1 ON SCREEN DISPLAY ... . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. . 24

3.2 SPEAKER CONFIGURATION.. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. 2 4

3.3 DELAY CONFIGURATION .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. 25

3.4 CHANNEL BALANCE AND TEST. .. .. . . . . . .. .. .. . . . . . .. .. .. . . . . . .. .. .25

3.5 INPUT CONFIGURATION.. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .25

3.6 PROLOGIC II SETUP.. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. 2 6

3.7 OTHER SETUP FUNCTIONS...........................................................26

OTHER INFORMATION

TROUBLE SHOOTING GUIDE.. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. 27-28

SERVICE INFORMATION .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . 28

WARRANTY INFORMATION ... . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . 29

GTP-860II SPECIFICATIONS .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. .. . . . .. .. .. 31

3ADCOM GTP-860 II Owner’s Manual |

5ADCOM GTP-860 II Owner’s Manual |

THE FOLLOWING PRECAUTIONS AND SAFETY INSTRUCTIONS

power lines

ground clamp

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

ground clamps

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 SH OCK

DO N OT

OPEN

CAUTION

RISK OF ELECTRIC SH OCK

DO N OT

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.

| ADCOM GTP-860 II Owner’s Manual4

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.

Congratulations on your decision to

clearance

5"

purchase the GTP-860II 7.1 tuner/
preamplifier. Multichannel audio and
home theater are better than ever.
Your new ADCOM component was
designed to deliver all the impact
of your favorite action flick and the
subtle harmonic texture that makes
high resolution audio amazing.
Audition the GTP-860II paired with
an ADCOM power amp and DVD player
and you will experience what high
performance is all about. To realize
the full potential of your GTP-860II,
and before making any connections
to it, please read these operating and
installation instructions thoroughly.

Key Features

• Dolby Digital and DTS decoding

• ADCOM 7.1m

• Component video switching

• 24 bit/192kHz DACs

• RDS tuner

• External 5.1 input

• Torriodial power transformer

2

Unpacking the GTP-860II

Before your new ADCOM 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 GTP­860II, 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.

Placing the GTP-860II

Although the GTP-860II does not
generate much heat, it is good prac­tice to ensure the preamplifier’s
long-term, trouble-free operation to
provide adequate ventilation for the
unit. Therefore, the GTP-860II should
be kept away from external sources
of heat such as radiators and hot-air
ducts.

We recommend that you exercise care
when placing components on top of
the GTP-860II. If you are placing a
heat producing component (such as
an amplifier) on top of or below the
GTP-860II, it is recommended that you
allow at least three (3) inches vertical
spacing for proper airflow.

We also recommend that you leave five
(5) inches of space behind the unit for
additional airflow and to allow space
for interconnects to hang freely.

If you observe these recommendations,
the GTP-860II will perform reliably
in any reasonable environment. You
should also pay attention to such nor­mal considerations as protection from
excessive dust and moisture.

The optimal performance of your new
GTP-860II will ultimately depend on
the care with which you make the con­nections between the amplifier, pream­plifier and loudspeakers. All input and
output signal connections should be
made only with high quality, low-loss,
low capacitance cables. For recom-

mendations of the type and quality of
interconnections that are best for your
applications, consult with your ADCOM
dealer.

Safety Information

There are no user serviceable parts
inside. Refer all servicing to qualied
service personnel.

The unit must be connected to a power
supply only of the type and voltage
specied on the rear panel. Connect
the component to the power outlet only
with the supplied power supply cable or
an exact equivalent. Do not modify the
supplied cable. Do not defeat grounding
and/or polarization provisions. The
cable should be connected to a 3-pin
polarized wall outlet, matching the
wide blade of the plug to the wide slot
of the receptacle. Do not use extension
cords. Do not route the power cord
where it will be crushed, pinched,
bent, exposed to heat, or damaged in
any way. Pay particular attention to
the power cord at the plug and where
it exits the back of the unit. The power
cord should be unplugged from the wall
outlet if the unit is to be left unused
for a long period of time. Immediately
stop using the component and have
it inspected and/or serviced by a
qualied service agency if:

• the power supply cord or plug has
been damaged;

• objects have fallen or liquid has
been spilled into the unit;

• the unit has been exposed to rain;

• the unit shows signs of improper
operation; or

• the unit has been dropped or
damaged in any way.

5ADCOM GTP-860 II Owner’s Manual |

7ADCOM GTP-860 II Owner’s Manual |

GTP-860II Front Panel

[1] Power Button

[2] Tuner Buttons

[3] Display Window

[4] Volume Knob

[5] Headphone/Vid 5 In

[6] Surround Backs

[7] Input Selector

[8] Surround Mode

[9] Bass/Treble Knobs

2

1

6

1.0 Description of Unit

1.1 Interface Overview

The GTP-860 II’s front panel is
designed for ease of operation. All
controls are logically grouped for easy,
intuitive operation. Familiarize your­self with the preceding diagram and
read the short explanations of each
feature below. When you finish, you
will be well on your way to enjoy­ing the GTP-860 II’s convenience and
sound quality.

3

7

[1]

On/Off Power Switch

Depress the Power button to switch
the preamplifier to its On state. The
LED in the power button will light up
RED. Pressing the Power switch again
will turn the unit OFF completely.

If the unit is currently ON, pressing
the power button [27] on the remote
control, will switch the unit to the
standby mode. The front panel indi­cators will turn off except for the LED
in the power button which will turn
to an amber color. Press the power
button on the remote again to switch
the unit from the Stand-By state to
the On state, and the last selected

2

4

8

source will be indicated in the
display.If the preamp is in the Stand­By state, it can be turned On by
pressing any of the input selector
buttons on the front panel.

NOTE: In Stand-By mode the GTP-860II uses

very little power. However, it is recommended

that you switch the unit completely off if it is

not going to be used for more than a couple of

days. Turn the unit Off by pressing the Power

button on the front panel. All lights will extin-

guish. When the GTP-860II is plugged into the

wall current may still be flowing into the trans-

former. Only when the GTP-860II is unplugged

is all current into the device stopped.

95

| ADCOM GTP-860 II Owner’s Manual6

[2] Digital Tuner Controls

FM/AM Button: Toggles between AM

and FM frequency bands.

FM Mode Button: Sets the FM tuner

to mono mode. The letter “M”
appears next to the tuner preset num­ber in the front panel display. Pressing
the button again returns the FM tuner
to stereo mode.

The letter “S” will appear ONLY when
a stereo station has been locked by the
Digital Tuner. A flashing “S” indicates
that the particular chosen station sig­nal strength is not strong enough for
the Digital Tuner to “lock” onto the
stereo signal. In this instance, the user
may want to consider placing the tuner
into mono mode.

Memory Button: Pressing this button

when FM or AM is selected as the input
source memorizes the current station
frequency into one of the presets. You
can preset up to 32 stations.

Tuner Up/Down Buttons: The function

of these buttons depends on the tuning
mode selected with the tune/preset
button.

In 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 high­est number preset, the tuner will go to
the lowest preset number or vice-versa
when tuning either up or down.

In 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.

The GTP-860II tuner can receive AM,
FM and FM stereo broadcasts. Up to 32
stations can be preset and accessed

from the front panel or remote.
Stations can also be tuned manually.

NOTE: Tuner reception cannot take
place unless an appropriate AM and/or
FM antenna is connected to the rear
panel of the GTP-860II.

To operate the tuner:

1. Press the tuner button on the
remote control once, or press the FM
or AM button on the front panel.

The display indicates that the tuner
is in FM or the AM mode, with stereo
selected as the surround mode. The
number displayed next to the tuner
text is the preset number currently
selected or last selected, followed by
the stereo reception indicator if the
station is being received in stereo. The
numbers next to the FM text are the
frequency of the selected preset or
station. The numbers in front of the
dB indication are the current volume
setting.

2. Press the AM/FM button on the
remote control or the front panel to
change between AM and FM bands.

3. Use the tune buttons on the front
panel or the remote to change the
tuner frequency. The new frequency
will be displayed to the left of the vol­ume level on the front panel display.

Pressing a tune button once increases
or decreases the FM frequency by .05
MHz and the AM frequency by 10 KHz.

4. Press and hold either the of the
tune buttons on the front panel or
the remote to scan continuously up
or down the selected band. The tuner
will stop on the next available station
when you release the button.

5. Press the FM mode button on the
front panel to toggle between stereo
and mono.

If an FM station produces lots of noise
or sound that cuts in and out while in
stereo, use this control to change the
FM mode from stereo to mono.

If you select mono as the operating
mode an indicator will appear next to
the preset number.

To preset a radio station into memory:

1. Tune to the radio station you desire.

2. Press and the memory button on
the front panel to store a station into
a preset location. The display will
change to show the word “memory”
along with a flashing number.

3. Use the up and down buttons on
the front panel to select the numeric
memory location in which to store this
station. To complete the process push
the memory button on the front panel
a second time. Up to 32 stations can
be stored, randomly between AM and
FM, in memory as presets.

To select a radio station that you
have preset:

1. Set the GTP-860II to tuner.

2. Push the tune/preset button until
the preset mode is selected.

3. Use the up and down buttons to
navigate through the list of presets
that are programmed into the GTP­860II

To change a preset radio station:

1. Tune to the new radio station you
desire.

2. Press and hold the mem button
on the front panel. The display will
change to show the word “memory”
along with a flashing number.

3. Quickly enter the new preset/
memory location (01 through 32)
using the up and down buttons on the
front panel. This replaces the previ­ously memorized preset with your new
selection.

7ADCOM GTP-860 II Owner’s Manual |

9ADCOM GTP-860 II Owner’s Manual |

[3] Display Window

The display area shows all vital infor­mation when the unit is operational.

[4] Volume Knob

The Volume control adjusts the over­all loudness of the signals being fed
to the preamplifier outputs. Unlike
conventional controls, the GTP­860II’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 [31]. 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 lower right hand side
of the front panel display and on the
OSD(On Screen Display).

On the remote control, press the
Mute button [29] to temporarily
switch off the sound to the Preamp
outputs and headphones. Mute mode
is indicated by “MUTE” 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.

[5] Headphone Output/
Video 5 Input

A 1/4” stereo jack socket is provided
for headphone listening and will work
with conventional headphones of any
impedance. The volume and tone
controls are operative for headphone
listening. Use a suitable adapter to
connect 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.

REMEMBER: Listening at high levels
can damage your hearing.

The video five input is located on the
front panel to simplify connection of
a camcorder or a video game console.
To select video five, push the cor­responding front panel button in the
input selector section.

[6] Surround Backs

Pressing this button engages ADCOM’s
proprietary 7.1m²™ decoding algo­rithm as long as the surround back
speakers have been turned on in the
speaker setup section of the OSD.
The 7.1m²™ decoding process mixes
the signals from the left surround
and right surround channels 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™ process
has the same benefits when com­pared to other matrix 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 channels. For
example, Dolby Digital 5.1 and DTS
soundtracks benefit greatly from the
addition of the 7.1m²™ processing.
Pro Logic soundtracks on the other
hand provide a mono surround signal
track, which yields a less satisfying
experience when using the surround
back channels.

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 functions
from the remote control. Be sure to
experiment to find the balance that
best suits your taste.

[7] Input Selector

These buttons select the active video
and audio input for the GTP-860II.
The source that is currently selected
will be shown on the top line of the
front panel display and the LED in
the source button will be red. On
the left side of the bottom line of
the front panel display the current
type of audio input will be displayed.
The audio input can be assigned to
the input select buttons using the
setup function as described in section
three of this manual. The currently
selected source signal is sent to the
main preamp outputs after process­ing and the video 3, video 4, aux and
tape outputs. 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 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. This func­tion can be selected for each source
using the On screen setup functional­ity as described in section three of
this manual.

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 currently selected source
is still being sent to the Tape Out
where it can be recorded. This

| ADCOM GTP-860 II Owner’s Manual8

function enables you to check on a
recording that you are making with­out affecting the recording process.
When Tape Monitor is selected, the
button will remain lit until Tape
Monitor is disengaged again. This
function is only active when a stereo
analog source is selected.

[8] Surround Mode

With the Surround Mode button the
available surround sound modes can
be selected. The selected surround
mode is permanently indicated in the
display area on the right side of the
top line 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
signals to the front left and right
speakers and possibly the subwoofer.

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 version of Pro Logic,
Dolby’s original surround matrix with
center channel output. Pro Logic
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 Pro
Logic decoding. In addition to the
standard Dolby Pro Logic II, which is
known as Prologic II Cinema(PLII-C).
“Pro Logic II Cinema”(PLII-C) is opti­mized for movies and television. The
GTP-860II supports two other ver­sions of Pro Logic II processing, which
were designed for specific types of
programs. “Pro Logic II Music” (PLII­M)mode was designed for use with
regular stereo recordings and it can
utilize all your speakers in your sys­tem when listening to a CD. “Pro
Logic II Panorama” (PLII_P)is a version
of Pro Logic 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. The original Pro Logic pro­cessing mode is also available.

5 ch Stereo: This mode is designed
for use with stereo program 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-860II automatically recognizes

if the selected source carries a Dolby
Digital™ or DTS™ signal. Dolby Digital
and DTS have six independent chan­nels available in total: Left, Center,
Right, Surround Left, Surround
Right and an “Effects Channel”
(Subwoofer). With either Dolby Digital

5.1 or DTS digital 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. If the GTP860II detects a
Dolby Digital™ or DTS™ signal it will
be indicated on the front panel dis­play in the surround mode section.

[9] Bass/Treble Controls

The GTP-860II 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 counter­clockwise 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.

9ADCOM GTP-860 II Owner’s Manual |

11ADCOM GTP-860 II Owner’s Manual |

GTP-860II Rear Panel

17

10

18

11

19

12

16

[10] Antenna Connections
[11] Preamp Outputs
[12] Auxiliary Outputs

14

13

24

25

22

15

[15] Component Video
Inputs & Output

[16] Multi-Zone Source
Outputs

21

20

23

[20] Digital Audio Inputs
[21] AC Power Cord

[22] 12V DC Trigger
[13] Monitor Outputs
[14] Video/Analog Audio

Inputs & Outputs

1.2 Inputs & Outputs
System Connections

Like the front panel, the GTP-860 II’s
rear panel is carefully arranged to
make hookup, configuration, and use
as simple as possible. However, the
GTP-860II’s capabilities take 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 probably
answer most of your questions about

[17] Tape Inputs/Outputs
[18] CD Analog Inputs
[19] Ext. 5.1 Analog Input

interfacing the GTP-860II with other
components in your system.

Note that the GTP-860II’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, CENTER CHANNEL and
SUBWOOFER inputs and outputs

[23] Voltage Switch

[24] IR Input

[25] RS232 Control Input

[10] Antenna Connections

AM Antenna: An AM loop antenna is

supplied with the GTP-860II 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 verti-

cally 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 satis-

factory using the supplied AM loop

antenna alone, connection of an

external antenna is recommended.

The antenna cable to the loop anten-

na must not exceed three meters.

| ADCOM GTP-860 II Owner’s Manual10