Adcom GTP-880 User Manual
1ADCOM GTP-880 Owner’s Manual |
3ADCOM GTP-880 Owner’s Manual |
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 while the amplifier and preamplifier are 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 new preamplifier to your other components, 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 multichannel amplifiers and
DVD players. In addition, we design and manufacture complementary products such as surge suppressors and speaker selectors. Please visit our web site at 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
A division of
Klein Technology Group, LLC
| ADCOM GTP-880 Owner’s Manual2
Welcome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Unpacking your GTP-880 . . . . . . . . . . . . . . . . . . . . . . 5
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . 5
Description of Unit
1.1 Front Panel Illustration . . . . . . . . . . . . . . . . . . . . 6
1.2 Introduction to the GTP-880 . . . . . . . . . . . . . . . 6
1.3 Interface Overview . . . . . . . . . . . . . . . . . . . . . 6-9
1.4 Surround Formats . . . . . . . . . . . . . . . . . . . . . 9-10
1.5 Rear Panel Illustration . . . . . . . . . . . . . . . . . . . 12
1.6 Input & Output System Connections . . . . . 13-15
1.7 Connecting Components . . . . . . . . . . . . . . . 15-23
Remote Control
2.1 Remote Control Illustration . . . . . . . . . . . . . . . 24
2.2 Overview of the GRC-810 . . . . . . . . . . . . . . . . 25
2.3 Remote Features . . . . . . . . . . . . . . . . . . . . . 25-26
2.4 Remote Function Table . . . . . . . . . . . . . . . . 26-31
2.5 Programming the ADCOM GRC-810 . .. . . . . 32-33
2.6 Programming Macro Buttons . . . . . . . . . . . . . . 33
2.7 Function and Data List (Discrete) . . . . . . . 34-35
Setup
3.1 Setup Overview . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.2 On Screen Display . . . . . . . . . . . . . . . . . . . . . . . 36
3.3 Input Configuration . . . . . . . . . . . . . . . . . . . 36-37
3.4 Speaker Configuration . . . . . . . . . . . . . . . . . 37-39
3.5 Channel Configuration . . . . . . . . . . . . . . . . . 39-41
Channel Calibration
Channel Trim
3.6 Delay Configuration . . . . . . . . . . . . . . . . . . . 41-42
3.7 System Configurations . . . . . . . . . . . . . . . . . 42-43
3.8 Prologic II and Neo:6 Music Config . . . . . . 43-44
3.9 Room Two Configuration . . . . . . . . . . . . . . . 44-45
3.10 Additional Options . . . . . . . . . . . . . . . . . . . 45-46
Resolving Problems . . . . . . . . . . . . . . . . . . . . . . . . . 48
Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Caring for your GTP-880 . . . . . . . . . . . . . . . . . . . . . 50
Service Information . . . . . . . . . . . . . . . . . . . . . . . . . 50
GTP-880 Specifications . . . . . . . . . . . . . . . . . . . . . . 51
3ADCOM GTP-880 Owner’s Manual |
5ADCOM GTP-880 Owner’s Manual |
THE FOLLOWING PRECAUTIONS AND SAFETY INSTRUCTIONS
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 signies 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 qualied
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/preamplier,
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 ampliers) 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 qualied 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.
| ADCOM GTP-880 Owner’s Manual4
This reminder is provided to call the CATV system installer’s attention to
Article 82022 of the National Electrical Code that provides guidelines for
proper grounding and, in particular, species that the cable ground shall
be connected to the grounding system of the building, as close to the
point of cable entry as practical.
NOTE TO CATV SYSTEM INSTALLER
Unpacking the GTP-880
Before your new ADCOM tuner-preamplifier left our factory, it was carefully inspected for physical imperfections and test-
ed 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-880, 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.
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 benets. 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,GTP-880, Canadian numbers 1,004,603 and 1,037,877.
Dolby® Pro Logic®, Dolby ProLogic II®, Dolby Digital EX®, 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 world-wide
patents issued and pending. “DTS®,” “dts®,” “DTS Digital Surround®,” “DTS-ES®,” “DTS NEO:6®” are trademarks of
Digital Theater Systems, Inc. Copyright 2003 Digital Theater Systems, Inc. All Rights Reserved.
5ADCOM GTP-880 Owner’s Manual |
7ADCOM GTP-880 Owner’s Manual |
1.1 Front Panel Illustration
1
2
5 5
3
4
[1]
Standby Power Button
[2]
Room Two Control
[3]
Bass & Treble
1.2 Introduction to the GTP-880
Congratulations on your decision to purchase the ADCOM
GTP-880 tuner-preamplifier. The GTP-880 provides Dolby
Digital and DTS decoding with 7.1 output channels and
the RDS (Radio Data System) tuner. You have made a wise
choice that will reward you for years to come with excep-
tionally accurate and musical sound reproduction. To real-
ize the full potential of your new preamplifier, and before
making any connections to it, please read these operating
and installation instructions thoroughly.
1.3 Interface Overview
The GTP-880’s front panel is designed for ease of
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-880’s convenience and sound quality.
[1]
Standby Power Button
Pressing this button turns the unit on, indicator is red.
Pressing this button again returns the GTP-880 to standby
mode. The standby indicator is amber.
In this mode of operation, the front panel display is turned
off, control functions are disabled, and all outputs to the
main room are turned off. Outputs to room two remain
active and available. It should be noted that they are only
“active” oif room two power is on.
[4]
Analog Direct Select
[5]
Digital Tuner Controls
[6]
Front Panel Display
8
6
9
7
[7]
Source Selections
[8]
Volume Control Knob
[9]
Surround Mode
Note: The rear panel power switch must be on for this
button to function.
[2]
Room Two Control
The GTP-880 has the ability to play and control an analog
audio signal in a second room from the front panel or
remote control. Any of the incoming analog audio signals
can be distributed to the second room, with the exception
of analog direct inputs.
On/Off Button: Pressing this button activates the room
two functionality and control. The on/off indicator light
illuminates.
Note: This light will remain lit when the other
indicators are off, as long as the second room is active.
Pressing this button again turns room two off, indicator
light extinguishes.
Setup Button: Pressing this button enters the room two
setup mode, pressing this button again will cycle a list of
room two options. Use the volume control knob to make
selections while in setup.
After entering setup the first option presented turns room
two off or on. Pressing this button again gives the option
to select a source to be played in room two.
Pressing this button again presents the option to mute the
output in room two.
| ADCOM GTP-880 Owner’s Manual6
Pressing this button again presents the option to set the
listening volume in room two, range is -80dB to 10dB.
Note: If no other selection is made while in setup, selections
will be saved and configuration will exit within 5 seconds.
[3]
Bass & Treble Adjustments
These buttons control bass and treble equalization.
Adjustments are made in 2dB steps.
Bass Button: Pressing this button displays current bass
setting, range is from -8dB to +8dB. Use the volume knob
to make an adjustment.
Treble Button: Pressing this button displays current treble
setting, range is from -8dB to +8dB. Use the volume knob
to make an adjustment.
Bypass Button: Defeats the tone controls and provides
an unaltered, full-bandwidth stereo signal to the left and
right channel outputs on the rear panel. However, the
subwoofer DSP crossover remains active and bass frequen-
cies are available at the subwoofer output should you
wish to augment your front L/R speaker’s low frequency
performance. The word “bypass” appears in the front
panel display. Pressing the button again returns the unit to
the previously selected tone settings.
[4]
Analog Direct Selections
These buttons select audio inputs from analog multichannel
sources such as DVD Audio or SACD players. The 2 channel but-
ton bypasses the DSP processing for the main selected input.
Bypass 2 Channel mode provides straight two channel listen-
ing. This mode is only applicable with an analog source, as this
input signal bypasses all processing sending a full-range signal
to the front Left and Right channels. However, if the user
has set Subwoofer to be on in the system setup, a Low Pass
Filtered matched signal to the crossover frequency set for the
front left and right channels will be sent to the subwoofer
in order to help reinforce the low-frequency response of the
system. If the user truly has full-range speakers (20Hz-20kHz)
and does not desire to have this bass reinforcement signal,
the user need only disable the subwoofer in the system setup
or in their system.
[5]
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 ste-
reo 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 select-
ed 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 automati-
cally 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-880 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 appro-
priate AM and/or FM antenna is connected to the rear
panel of the GTP-880.
To operate the tuner:
1. Press the tuner button on the remote control once, or
press the tuner button on the front panel.
This indicates that the tuner is in FM, 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.
7ADCOM GTP-880 Owner’s Manual |
9ADCOM GTP-880 Owner’s Manual |
This display indicates that the tuner is in AM with a
selected preset and the frequency of that preset or
station. The numbers in front of the dB indication are the
current volume setting.
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 and OSD.
Pressing a tune button once increases or decreases the FM
frequency by .1 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 hold the mem button on the remote or 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 ashing number.
To change a preset radio station:
1. Tune to the new radio station you desire.
2. Press and hold the mem button on the remote or the
memory button on the front panel. The display will change
to show the word “memory” along with a ashing number.
3. Quickly enter the new preset/memory location (01 through
32) using the numeric keypad on the remote. This replaces
the previously memorized preset with your new selection.
You have approximately ve seconds to enter a number.
[6]
Front Panel Display
Indicates program source, DSP mode, tuner preset and/or
frequency, digital input, volume level, and other GTP-
880/tuner operating information. Also displays menu
selections. Diming of the display may be accomplished via
the remote control or through the on screen display.
The front panel display provides visual feedback of the
current settings, surround modes and configuration menus
of the unit. Information is constantly displayed at the
front panel whenever the GTP-880 is turned on.
The information presented on the front panel is identical
to that shown on your TV monitor via the on screen dis-
play, allowing you to perform speaker settings, set up your
input sources, set the listening modes, and much more.
[7]
Source Buttons
These buttons select the active video and audio input for
the GTP-880. The source that is currently selected will be
shown in the front panel display and the LED in the source
button will be red.
3. Quickly enter the desired preset/memory location (01
through 32) using the numeric keypad on the remote. This
programs the radio station to that memory location. You
have approximately ve seconds to enter a number.
Up to 32 stations can be stored, randomly between AM and
FM, in memory as presets.
To tune to a radio station that you have preset:
1. Set the GTP-880 to tuner.
2. Use the numeric keypad on the remote control to enter
the two digit number of the preset that you want to hear.
The tuner frequency (and band if it is different then the
previously tuned station) changes to the new station in the
preset memory of the GTP-880.
| ADCOM GTP-880 Owner’s Manual8
DVD, Video 1, Video 2, Video 3, VCR, AUX, CD, Tape
Tuner: Pressing this button changes the source to the
built-in AM/FM digital tuner. Please refer to digital tuner
controls, previously detailed in this section for more
instructions on using the GTP-880’s tuner.
[8]
Volume control
The volume control adjusts the overall loudness of the
signals being fed to the preamplifier outputs. Unlike con-
ventional controls, the GTP-880’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. The volume control does not affect record-
ings made using the tape or VCR 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 -80dB to +10dB.
On the remote control, press the mute button to tempo-
rarily switch off the sound to the preamp outputs. Mute
mode is indicated by the word “mute” in the display area.
Press mute again or adjusting the volume will restore
sound. Mute does not affect recordings made using the
tape or VCR outputs but does affect the signal going to the
preamp outputs.
Adjusts the volume level for the main room only. Room
two is not affected by this control.
[9]
Surround Mode Buttons
With the surround mode buttons the available surround
sound modes can be selected. The selected surround mode is
permanently indicated in the display area and is also shown
for three seconds in the large text section of the display.
7.1m²™ Button: Pressing this button activates ADCOM’s
proprietary decoding algorithm.
This proprietary analog-domain post-processing technique
takes 5.1 channel or other sources that have surround
channel information and extracts a psuedo-stereo sur-
round back channel information. Only DSP modes that do
NOT generate more than 2 surround channels (e.g. - Dolby
Digital, DTS, 5 Stereo, Dolby Pro Logic, Dolby Pro Logic
II Cinema, Dolby Pro Logic II Music, DVD-Audio Bypass
Input, SACD Bypass Input) can benefit from ADCOM 7.1m2
post-processing. Trying to enable ADCOM 7.1m2 during any
other DSP mode (e.g. Dolby Digital EX, DTS-ES Extended
Surround, 7 Stereo, 2 Channel Bypass) is Invalid and will
be indicated as such by the system. Additionally if the
system setup up does NOT indicate that the system setup
offers 2 surround back channels, ADCOM 7.1m2 will never
be offered as option.
Pressing this button again turns 7.1m²™ decoding off and
returns to previously selected surround mode.
Select Left/Right Button: Pressing this button cycles
through list of available surround modes.
1.4 Surround Format Information
The GTP-880 provides decoding for Dolby Pro Logic®
II, Dolby Digital® 5.1, Dolby Digital EX®, DTS®, DTS-
ES® Discrete, DTS-ES® Matrix, DTS NEO:6® and ADCOM
7.1m²™. Within each mode, the GTP-880 also offers a wide
range of additional processing options. This means you can
precisely match a surround mode to your program mate-
rial, loudspeaker setup and personal taste. In addition,
the GTP-880 precision bass management feature provides
maximum exibility when setting up your audio surround
system (see “system setup” for further details).
ADCOM 7.1m²™: ADCOM’s proprietary decoding algorithm.
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 multichannel 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.
ProLogic soundtracks on the other hand provide a mono
surround signal track, which yields a less satisfying
experience when using the surround back channels.
Note: 7.1m2 decoding may only be applied to 5 channel signals.
Dolby Digital: This digital audio format provides 5.1-
channel surround sound. Dolby Digital source material
includes DVDs, laser discs, HDTV broadcasts, some satellite
delivered programming, and the output of some digital
cable set top boxes.
Dolby Digital Surround EX: This processing mode is a joint
development of Dolby Laboratories and the THX division
of LucasFilm, Ltd. Film soundtracks encoded with Dolby
Digital Surround EX technology contain an extra channel,
added to the soundtrack during mixing, called surround
back, which places audio behind the listener in addition to
the existing front left, front center, front right, surround
left, surround right, and subwoofer channels. This
additional channel provides more detailed imaging behind
the listener creating more depth, spacious ambience and
sound localization than before.
Note: Surround EX mode can also be engaged during the
playback of 5.1 channel material that is not Dolby Digital
Surround EX encoded. When used this way, signals from
the left and right surrounds are used to synthesize the
surround back channel. Results using this method will vary
9ADCOM GTP-880 Owner’s Manual |
11ADCOM GTP-880 Owner’s Manual |
depending on the source material.
Surround EX decoding is ONLY applicable to 2/2.0, 2/2/
.1, 3/2.0, 3/2.1 streams AND when there is one or two
surround back channels available in the system.
Dolby Pro Logic II: Dolby Pro Logic II is a substantial
enhancement to the original Pro-Logic process. In addition
to full-bandwidth surrounds, Pro Logic II provides three
unique user adjustable processing options: panorama;
dimension; and center width. Used primarily in Pro Logic.
decoder, even if they have a surround back speaker(s) in
their setup.
The GTP-880 will automatically sense the availability of
either DTS-ES format and automatically switch the pro-
cessing mode when required.
DTS NEO:6-C (Cinema): This processing mode can create
up to 6 full bandwidth channels from any matrix-encoded
2 channel source. Additionally, this mode can produce the
rear surround information from a 5.1 source.
Dolby Pro Logic II-C (Cinema): This processing mode can
create up to 6 full bandwidth channels from any stereo, 2
channel source, idea for use with movies.
Dolby Pro Logic II-M (Music): In music mode there are
three additional adjustments.
Panorama provides an extension of the front stereo image
to the surround channels creating an enveloping, wrap-
around effect.
Dimension enables adjustment of the surround image
between the front and rear of your room. Certain types of
music benet from smoother overall balance and a more
natural sounding image.
Center width provides variable adjustment of the center
channel image and location, to create a more seamless
front soundstage as well as control of the sense of “width”
across the L/C/R loudspeaker array. A phantom center
image can also be created from just the left and right
front speakers.
DTS: This compressed digital data format is similar to Dolby
Digital. DTS also provides 5.1 channel surround channels and
is available on compact disc, DVD and laser discs. Audio-only
DTS discs may be used with any CD, LD or DVD player with a
digital audio output, but DVD discs with DTS audio must be
used on players with the “DTS Digital Out” logo.
DTS-ES: An extension of the original DTS format that
adds an additional sixth, or center surround, channel to
a soundtrack. DTS-ES Matrix 6.1 titles provide a surround
back channel by a matrix decoding process, while DTS-ES
Discrete 6.1 media deliver a true discrete center surround
channel. Both DTS-ES formats are backwards compatible
with the original DTS process, and will deliver a 5.1
channel output when no center or back surround speakers
are available. Additionally, the user may force the system
to decode a DTS-ES Matrix 6.1 stream or DTS-ES Discrete
6.1 stream using the DTS Digital Surround 5.1 channel
DTS NEO:6-M (Music): In music mode it can expand stereo
music material, into a multichannel surround experience.
Stereo: This mode provides conventional 2 channel signals
from a stereo or downmixed multichannel to the left and
right front speakers only. With an analog and digital input
source, the signal is decoded (if AC-3 or DTS) and then
downmixed (if a multichannel source) and then bass-
management is applied which allows for the HPF on the
front speakers to match the LPF set on the subwoofer.
Delays are offered on the front and subwoofer channel in
this mode as well.
Stereo 5: 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.
Stereo 7: 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.
Additional Information
More detailed information about the various surround
processing options contained in the GTP-880 can be found
on the following websites:
www.dolby.com & www.dtsonline.com
| ADCOM GTP-880 Owner’s Manual10
Placement of your GTP-880
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-880 (and other audio/
video components) away from moisture and out of direct
sunlight. Bear in mind that the GTP-880’s rear panel is the
central connecting point for almost every component in
your audio/video system. Leave sufcient 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-880 for maximum exibility.
A distance of 1/2” should be maintained around the GTP-
880 for ventilation. Keep your GTP-880 in a room where
temperatures remain fairly moderate, and never cover
it with table cloths, curtains, newspapers, etc., to avoid
potential overheating.
11ADCOM GTP-880 Owner’s Manual |
13ADCOM GTP-880 Owner’s Manual |
1.5 Rear Panel Illustration
29
31
30
10
11
12
13
14
15
16
18
[10] DVD Component Video Input
[11] Video 1 Component Input
20 21
23
17
19
24
25
26
22
27
[21] IR Inputs (main/room 2)
[22] Room 2 Analog Audio Output
28
[12] Video 2 Component Input
[13] Monitor Component Output
[14] Analog Audio Source Inputs
[15] AM/FM Antenna Inputs
[16] S-Video Inputs
[17] S-Video Output
[18] Composite Video Inputs
[19] Composite Video Output
[20] 12V DC Trigger (main/room 2)
| ADCOM GTP-880 Owner’s Manual12
[23] RS232 Control (DB9)
[24] SACD Input (DB25)
[25] DVD Audio Input
[26] Analog Bass Management
[27] Main Analog Audio Output
[28] Digital Audio Inputs
[29] Digital Audio Outputs
[30] Main Power Switch
[31] AC Input
1.6 Input & Output System Connections
Like the front panel, the GTP-880’s rear panel is carefully
arranged to make hookup, configuration, and use as sim-
ple as possible. However, the GTP-880’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 prob-
ably answer most of your questions about interfacing the
GTP-880 with other components in your system.
Note that the GTP-880’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)
Note: No on screen text messages are available on
component video.
[15]
AM/FM Antenna Inputs
FM Antenna terminal: Use to connect the supplied FM
antenna or an external 75 Ω antenna. Do not over tighten
as this may damage the connection.
The supplied FM antenna is for indoor use only. For best
signal reception you must fully extend the antenna. Ex-
periment with the antenna’s position to obtain the stron-
gest signal. You can attach it to a wall or other surface
using push pins or similar apparatus.
If reception is poor with the supplied indoor antenna, using
an amplified indoor or outdoor antenna is recommended.
Note: You can only connect a 75Ω type FM antenna to the
GTP-880. If you choose to use an antenna other than the
one supplied, be sure to verify that it has the correct type
of connector or that you obtain an appropriate adaptor.
Try to avoid using the same antenna for both FM and TV
reception since the signals can interfere with each other.
If you must use a common FM/TV antenna, be sure that
you install an splitter to separate the two signals.
BLACK centers = DIGITAL AUDIO inputs and
CENTER CHANNEL and
SUBWOOFER inputs and outputs
[10]
DVD Component Video Input
Use this set of dedicated jacks to connect a DVD player
with component video output.
[11]
Video 1 Component Input
Use this set of jacks to connect devices with component
video outputs such as a DVD player or HDTV tuner.
[12]
Video 2 Component Input
Use this set of jacks to connect devices with component
video outputs such as a DVD player or HDTV tuner.
[13]
Monitor Component Video Output
Use these jacks to supply component video output to an
external monitor that accepts component video signals.
Note: No OSD is available on the component video output.
[14]
Analog Audio Source Inputs
Use these inputs for connection to analog audio sources
such as a CD player. One in/out tape loop is provided for
connection to an audio recorder.
AM Antenna terminals: Connect the supplied AM loop
antenna or an external AM antenna to these terminals.
Connect the AM antenna to the terminals labeled AM and
gnd (ground) on the rear panel of the GTP-880. Start by
pressing the lever on the side of one of the terminals to
the right. Next, insert one of the antenna wires into the
opening. Finish by returning the lever to the up position,
securing the wire. Do the same for the other wire to
complete installation.
[16]
S-Video Inputs
Use these inputs for connection to the s-video output from
sources such as a DVD or LD player, satellite receiver, cable
box, PVR or other video source. Note that when the compo-
nent video inputs are used, connect the analog audio outputs
of the source to the DVD or Video 1 jacks, as appropriate.
Connect the VCR-OUT jack to the input of a VCR or other
recorder and connect the OUT jack to an s-video input on
your video display device.
[17]
S-Video Main Output
Connect this output to the s-video input of your monitor or
other video display device.
13ADCOM GTP-880 Owner’s Manual |
15ADCOM GTP-880 Owner’s Manual |
[18]
Use these inputs for connection to the composite video
output from sources such as a DVD or LD player, satellite
receiver, cable box, PVR or other video source. Note that
when the component video inputs are used, connect the
analog audio outputs of the source to the DVD or video 1
jacks, as appropriate.
[19]
Connect this output to the composite video input of your
monitor or other video display device.
[20]
The DC trigger jacks are used to remotely turn-on other
devices in your system when the GTP-880 is powered on.
Power is applied to the main trigger output jack when the
GTP-880 is turned on from the standby mode. We recom-
mend that this jack be used to turn on a compatible power
amplifier such as those available from ADCOM, but it may
also be used to activate compatible products such as
projection screens or motorized blinds.
Connect a mono mini-plug between the DC trigger main
jack on the rear panel of the GTP-880 and the low voltage
trigger jack of the device to be controlled to enable re-
mote turn-on of that component. The room 2 trigger jack
is activated when the room two system is turned on and
should be used for control of amplifiers used to power the
speakers installed in room two. It will remain activated as
long as the room two system is on, even when the GTP-880
is in the standby mode for the main room.
[21]
Use the main and room two remote jacks to connect
external IR sensors to the GTP-880. When the unit is
installed behind doors or where it is not otherwise visible
to the remote, connect an optional, external sensor to the
main jack. To control the GTP-880’s room two system from
a remote location, connect an optional remote sensor in
the second room to the room two jack.
Composite Video Inputs
Composite Video main Output
12V DC Trigger (main/room 2)
IR Inputs (main/room 2)
The room two jack is provided to enable remote control
of the GTP-880’s room two system through the use of an
optional remote sensor in the second room. Connect the
sensor to the room two jack using a mono mini-plug and
the wiring specified by the sensor’s manufacturer.
[22]
Room 2 Analog Audio Output
Use these jacks to supply the analog stereo audio output
to an optional audio amplifier used to power the speakers
in room two.
Use the L and R channel room two out audio jacks to con-
nect the GTP-880 to the analog audio inputs of an external
amplifier or other audio component in a second room. The
analog signal present will reflect the input selection of the
GTP-880. This may be adjusted using the room two menu
or the rm. 2 button on the remote control.
[23]
RS232 Control (DB9)
Allows control of the GTP-880 via computer or home
automation system.
[24]
SACD Inputs (DB25)
Connect the multichannel signal from the analog audio
outputs of a device such as a DVD, DVD-A or SACD.
[25]
DVD Audio Inputs
Connect the multichannel signal from the analog audio
outputs of a device such as a DVD, DVD-A or SACD.
[26]
Multichannel Analog Bass Management
Analog bass management is totally separate from the DSP
bass management, set up using a three position switch on
the rear panel, and applied to multichannel analog inputs.
Up Position: LPF/HPF both on
This position is ideal for owners who have speakers that
only have a frequency response that goes down to around
80Hz (@-3dB). All bass information is summed, low-pass-
filtered (@ 80Hz) and sent to the subwoofer.
80Hz high-pass crossover for L, C, R, LS, and RS: (12dB/octive)
The remote jacks allow you to extend the on-board remote
control sensor on the GTP-880’s front panel so that you may
continue to control the GTP-880 even when it is installed
behind solid or smoked cabinet doors or when the front
panel sensor is otherwise not visible to the remote control.
To extend the remote sensor connect an optional remote
sensor to the main jack.
| ADCOM GTP-880 Owner’s Manual14
80Hz low-pass crossover for subwoofer: (12dB/octive)
Middle Position: LPF on/HPF bypassed (subwoofer bass
reinforcement mode)
This position is also ideal for owners who have speakers
in their system that are full range (or at least have a
frequency response that extends below 80Hz) however
the user still desires that summed and low-pass-filtered
audio information be sent to the subwoofer which helps to
reinforce the low-end frequency response of the system.
80Hz low-pass crossover for subwoofer: 12 dB/octave
Down Position: LPF/HPF complete bypass path (analog
multichannel input bass management disabled)
This position is ideal for DVD-Audio/SACD multichannel
players which already include integrated bass management,
a user has another multichannel analog bass management
device, or all speakers in the system are full-range.
[27]
Main Analog Audio outputs
Use the seven audio channel output jacks to connect the
GTP-880 to an external power amplifier. The eighth jack
supplies the output to a powered subwoofer or external
subwoofer amplifier.
[28]
Digital Audio Inputs
Use these inputs to connect the coaxial and optical digital
audio signal output from such digital devices as CD, DVD or
LD players. These inputs are fully assignable using the OSD.
[29]
Digital Audio Outputs
Use the coaxial and optical digital outputs to connect the
GTP-880 to a device such as CD recorder, DAT recorder, or
other similar device that accepts a digital audio input.
[30]
Main Power Switch
Turns the current to the GTP-880 on or off. Setting this
button to the on position (pushed in) supplies power to
the unit, enabling use of the standby power button on
the front panel. When the main power switch is in the off
position, current is cut off to the unit.
[31]
AC Input
Use to connect the supplied AC power cord (see page 2).
Before proceeding, please observe the following precau-
tions when connecting devices to your new GTP-880.
Do not plug the power cord into your GTP-880 until
all other connections have been made.
Insert the supplied power cord into the AC input of the
rear panel of the GTP-880. Do not use a power cord other
than the one supplied with the GTP-880. It’s designed for
use with the GTP-880 and should not be used with any
other device.
Warning: Never disconnect the power cord from the GTP-880
while the other end is plugged into an AC outlet. Doing so may
cause an electric shock. Always connect power by plugging into
the AC outlet last and disconnect by unplugging from the AC
outlet first.
1.7 Connecting Components
Always refer to the instructions that came with the com-
ponent that you are connecting for specific procedures,
warnings and options.
For all analog connections, the red input jacks (R) are
used for the right channel, white input jacks (L) are used
for the left channel, and yellow input jacks (V) are used
for the composite video connection.
Make sure to insert all plugs and connectors securely. Im-
proper connections can result in noise, poor performance,
or damage to the equipment.
Do not bundle audio/video connection cables with power
cords and speaker cables. Doing so may adversely affect
the picture and sound quality. For example, run all the
power cords down one side of the cabinet, all the signal
cords down the other side, and the speaker wires down
the center.
When connecting devices to the digital inputs and outputs,
you may also consider hooking up the analog connections
to and from the components to insure that all signals can
be employed by the GTP-880.
When using the optical input or output jacks, remove the
protective cap and keep it in a safe place. When these
jacks are not in use the protective cap should be replaced.
When using an optical input or output jack, always use a
high-quality optical fiber cable.
Important Note: We strongly recommend that before you
connect any loudspeakers to your amplifiers, you complete
all needed connections and set up procedures to your GTP-
880 as outlined below. This will reduce the chance that a
miss connection or other error will produce audio output
that might damage your speakers or other components.
Caution: Before you plug the power cord into an AC wall outlet, con-
firm that all connections to the GTP-880 have been made correctly.
15ADCOM GTP-880 Owner’s Manual |
17ADCOM GTP-880 Owner’s Manual |
External Amplifier
Important Note: Before attempting to plug any jacks into
any power amplifier verify that the power amplifier is
turned off and/or disconnected from the AC mains. Failure
to do so can potentially result in severe damage to your
amplifier and loudspeakers.
Use the audio jacks labeled main audio outputs to connect
the GTP-880 to an external power amplifier such as the
ADCOM 7807 power amplifier. The GTP-880 can output up
to 7.1 channels of sound (seven satellite and one subwoofer
channel) depending on source components and material.
DVD Player
Composite: Connect the composite video output from the
DVD player to the DVD video input jack on the rear of the
GTP-880 using an RCA-type video cable.
S-video: If there is an s-video output on the DVD player,
and you have an s-video input on your TV or monitor, con-
nect it to the s-video DVD input on the rear of the GTP-880
using an s-video cable. S-video delivers a better picture
than composite connections and should be used whenever
possible unless you can use component connections, which
deliver better video than s-video.
The output jacks supplied by the GTP-880 are:
left front, center, right front, left surround, right
surround, left surround back, right surround back,
and subwoofer.
Be sure to verify that the correct outputs are connected to
the appropriate input jacks (left front to left front, right
surround back to right surround back, etc..)
When a powered subwoofer is used, connect the subwoof-
er output jack to the Line Input jack on your subwoofer
and follow any specific connection and/or configuration
instructions supplied with the subwoofer. If your sub-
woofer is a passive speaker, connect the subwoofer output
jack on the GTP-880 to the input of the amplifier used to
power the subwoofer, and then connect the subwoofer
speaker itself to the amplifier.
Component: If the DVD player has component video out-
puts, connect them to the DVD component video input jacks
on the rear of the GTP-880 using an appropriate cable set.
Note: OSD messages do not appear on component video.
Analog Audio: Connect the L and R channel outputs on the DVD
player to the DVD in audio jacks on the rear of the GTP-880.
Digital Audio: Connect one of the digital output jacks on
the DVD player to one of the coaxial (coax 1-3) or optical
(opt 1-3) input jacks on the rear of the GTP-880, depending
on the type of connector used by the DVD player. The fac-
tory preset for DVD is coax 1. Later, you can configure the
GTP-880 to use the specific input that you have chosen.
Use a GFA-7807 Power Amplifier (pictured above) or the GFA-7607 for seven channel
surround sound setups. Five channel versions of these amplifiers are also available.
| ADCOM GTP-880 Owner’s Manual16
Loading...