Adcom GTP-830 User Manual
GTP-830
Digital Processing
Tuner/Preamplifier
Owner’s Manual
serial number:
date purchased:
A NOTE FROM ADCOM
Thank you and congratulations on your purchase
of the ADCOM GTP-830 Digital Processing Tuner/
Preamplifier. The GTP-830 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.
ADCOM PROTECTION PLAN (USA ONLY)
ADCOM offers the enclosed valuable Limited Warranty.
Please read the details on the Warranty Card carefully to
understand the extent of the protection offered by the
Warranty, its reasonable limitations, and what you
should do in order to obtain its benefits. Be sure to
verify that the serial number printed on the rear panel
matches the serial number on the outer carton. If any
number is altered or missing, you should notify us
immediately in order to ensure that you have received a
genuine ADCOM product which has not been opened,
mishandled, or tampered with in any fashion.
CONCEALED SHIPPING DAMAGE
Before your new GTP-830 left our factory, it was
carefully inspected for physical imperfections and tested
for all mechanical and electrical parameters as a routine
part of ADCOM’s systematic quality control program.
This should ensure a flawless product in both
appearance and performance. After you have unpacked
the GTP-830, inspect it for physical damage. Save the
shipping carton and all packing material as they are
intended to reduce the possibility of transportation
damage should your component ever need to be
shipped or moved again.
In the unlikely event that damage has occurred, notify
your dealer immediately and request the name of the
freight carrier so a written claim to cover shipping
damages can be filed. THE RIGHT TO A CLAIM
AGAINST A PUBLIC CARRIER CAN BE FORFEITED IF
THE CARRIER IS NOT NOTIFIED PROMPTLY, IN
WRITING, AND IF THE SHIPPING CARTON AND
PACKING MATERIALS ARE NOT AVAILABLE FOR
INSPECTION BY THE CARRIER. SAVE ALL PACKING
MATERIALS UNTIL THE CLAIM HAS BEEN SETTLED.
This unit is manufactured under license from Dolby Laboratories Licensing
Corporation. It is additionally licensed under one or more of the following patents:
U.S. number 3,959,950, Canadian numbers 1,004,603 and 1,037,877.
Dolby® Pro Logic®, and Dolby Digital® are registered trademarks of Dolby
Laboratories Licensing Corporation.
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,” are trademarks of Digital Theater Systems, Inc. Copyright 1996
Digital Theater Systems, Inc. All Rights Reserved.
*Save the shipping carton and all packing material.
4 | ADCOM OWNER’S MANUAL
IMPORTANT SAFETY INSTRUCTIONS
Warning: To reduce the risk of fire or electric shock,
do not expose this unit to rain or moisture.
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 the operating
instructions should be adhered to.
Even when the light of the switch is off, some parts
of the appliance may still be under hazardous live
potential.
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.
Do not place any object filled with liquids, such as
vases, on the unit.
The AC power 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 the unit.
The AC power cord should be unplugged from the
wall outlet when the unit is to be unused for a long
period of time.
This unit should be serviced by qualified service
personnel when:
—The power cord or plug has been damaged; or
—Objects have fallen or liquid has been spilled,
into the unit; or
—The unit does not appear to operate normally,
or exhibits a marked change in performance; or
—The device has been dropped, or the enclosure
damaged.
All warnings on the unit and in its operating instructions should be adhered to.
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 a bookcase or cabinet, that may
impede the flow of air through its ventilation openings.
The unit should be situated away from heat sources
and open flames such as radiators, heat registers, stoves,
or other devices (including amplifiers) that produce heat.
The unit should be connected to a power-supply
outlet only of the voltage and frequency marked on
its rear panel.
Care should be taken so that objects do not fall, and
liquids are not spilled, into the enclosure openings.
If necessary, the user should consult the dealer or
an experienced radio/television technician for additional suggestions. The user may find the following
booklet prepared by the Federal Communications
Commission helpful: “How to identify and Resolve
Radio - TV Interference Problems.” This booklet is
available from the US Government Printing Office,
Washington, D.C., 20402, Stock No. 004-000-00345-4.
Outdoor Antenna Grounding
If any outside antenna is connected to your tuner or
tuner-preamplifier, be certain 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.
70-1984, 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 the grounding conductors,
location of the antenna dis-charge unit, connection
to grounding electrodes, and requirements for the
grounding electrode.
a. Use No. 10 AWG (5.3 mm 2 ) copper, No. 8 AWG
(8.4 mm 2 ) aluminum, No. 17 AWG (1.0 mm 2 ) copperclad steel or bronze wire, or larger, as a ground wire.
b. Secure antenna lead-in and ground wires to
house with standoff insulators spaced 4-6 feet (1.22-
1.83 m) apart.
c. Mount antenna discharge unit as close as possi-
ble to where lead-in enters house.
d. Use jumper wire not smaller than No. 6 AWG
(13.3 mm 2 ) copper, or the equivalent, when separate antenna-grounding electrode is used. See NEC
Section 810-21 (j).
Note to CATV system installer:
This reminder is provided to call the CATV system
installer’s attention to Article 820-22 of the National
Electrical Code that provides guidelines for proper
grounding and, in particular, specifies that the cable
ground shall be connected to the grounding system
of the building, as close to the point of cable entry
as practical.
WARNING: To reduce the risk of fire or electric shock,
do not expose this appliance to rain or moisture.
ATTENTION: Pour eviter tout risque de feu ou choc electrique,
ne pas exposer cet appareil a la pluie ou a l'humidite.
AVIS: Risque de choc electrique- ne pas ouvrir.
``
``
`
`
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
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
SAFETY NOTIFICATION PAGE
This “Lightning Flash with
Arrowhead” symbol is
intended to alert the user of
the presence of uninsulated
“dangerous voltage” within
the product’s enclosure that
may be of sufficient magnitude to constitute a risk of
electric shock to persons.
Caution — To prevent electrical shock, do not use the
polarized plug with an extension cord or receptacle, or
other outlet, unless the
blades can be fully inserted
to prevent blade exposure.
The “Exclamation Point”
symbol is intended to alert
the user to the presence of
important operating and
maintenance (servicing)
instructions in the literature
accompanying the appliance.
Any outdoor antenna must be located
away from all power lines.
ADCOM OWNER’S MANUAL | 5
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
✔✔
✔
✔✔
✔
GTP-830 CHECKLIST
6 | ADCOM OWNER’S MANUAL
GTP-830 Tuner/Preamp
GTP-830 Remote Control
with Batteries
GTP-830 Owners Manual
and Warranty
ADCOM Power Cord Video 5 input cover FM Antenna/Balun Adapter
A Note from ADCOM 3
The ADCOM Protection Plan 3
Unpacking your GTP-830 3
Safety Information 4-5
GTP-830 Checklist 6
1.0 Product Features 8
1.1 Front Panel Controls 9
1.2 Rear Panel Inputs & Outputs - System Connections 14
1.3 The Remote Control 20
2.0 Installing/Connecting the GTP-830 29
2.1 Physical Placement 29
2.2 Connecting Source Components to the GTP-830 29
3.0 Initial Setup 30
3.1 The On Screen Display 30
3.2 Channel Balance 30
3.3 Channel Delays 31
3.4 Speaker Settings 32
3.5 Surround Speaker Placement 34
3.6 Input Setting 35
4.0 Trouble Shooting 36
5.0 Care, Maintenance, and Service 38
6.0 Specifications 39
TABLE OF CONTENTS
ADCOM OWNER’S MANUAL | 7
8 | ADCOM OWNER’S MANUAL
[01] Power button
[02] Display button
[03] FM Mute/High Blend button
[04] Memory button
[05] Tuner Up/Down buttons
[06] Tune/Preset button
[07] Display window
[08] Volume knob
[09] Headphone Output and
Video 5 inputs
[10] Surround Backs button
see page 34 for backs placement
[11] Input Selector buttons
[12] Surround Mode button
[13] Bass/Treble controls
GTP-830 DIGITAL PROCESSING TUNER/PREAMPLIFIER
[01]
02][05]
[
04]
[
03]
[
[
07][06]
[
05]
[
08]
DIGITAL
GTP-830
L audio Rvideophones
[
09][10][11][12][13]
s-video
video 5 in
display
FM mute/high blend
memory
surround backs
FMAMext 5.1tape monitorCD
video 5video 4video 3video 2video 1
up
tune/preset
down
surround mode
bass treble
volume
1.1 Front Panel Controls
The GTP-830’s front panel is a model of simplicity.
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-830’s convenience
and sound quality.
[01] 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 [25] 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-830 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.
Press the Remote Control Power button [25] to
switch the unit from operating to Stand-by mode
and vice versa. Press this button again to switch to
unit on from Stand-by; the last selected 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-830 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. Switch off completely by
pressing the Power button on the front panel. All
lights will extinguish. When the GTP-830 is plugged
into the wall current may still be flowwing into the
transformer. Only when the GTP-830 is unplugged is
all current into the device stopped.
[02] Display button:
The GTP-830 supports RDS PS and RDS RT. With
stations carrying RDS information, “RDS” will light
up in the display panel, and the station’s RDS name
is automatically displayed (RDS PS).
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 playing, etc. This text scrolls continuously over the 8 alphanumeric 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.
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 display will dim. Press and hold the button
again to turn the display off, and again to set the
display back to its original brightness.
PRODUCT FEATURES
ADCOM OWNER’S MANUAL | 9
[03] 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.
However, very weak radio station signals may be
suppressed 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 circuit 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 [04] a
preset number can be emptied.
[04] 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 [05] 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 seconds “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
[04]. “MEMORY” and the preset section in the
display panel will start to flash. If no other button
is pressed within 10 seconds, “MEMORY” will stop
flashing and the preamplifier will default to its
previous state.
Press the Down/Up [05] 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 [04] again. The Memory light in the
Display Panel will go out and the station is now
stored in your GTP-830’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:
•Select the Preset to be emptied.
•Press the Memory button [04], followed by the FM
Mute/High Blend button [03]. The Preset will then
be deleted and ‘—’ appears as the Preset number.
[05] Tuner Up/Down buttons:
The function of these buttons depends on the tuning mode selected with the Tune/Preset button [06].
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 highest 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
GTP-830 DIGITAL PROCESSING TUNER/PREAMPLIFIER
10 | ADCOM OWNER’S MANUAL
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 successive tap of the keys, the
tuner will take 0.05 MHz steps on FM so you can
accurately tune into the desired frequency. 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 search mode. When tuned accurately to a
station, “TUNED” will light up in the display.
[06] 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 [05] description
for more information.
[07] Display window:
The display area shows all vital information when
the unit is operational.
[08] Volume knob:
The Volume control adjusts the overall loudness of
the signals being fed to the preamplifier outputs.
Unlike conventional controls, the GTP-830’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 [29]. 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.
On the remote control, press the
Mute button [27] 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.
[09] Headphone Output and Video 5 inputs:
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.
NOTE:
The sound from the ext 5.1input is not available on the
headphones socket.
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.
[10] Surround Backs button:
Pressing this button toggles the Surround Back
channels on and off. The Surround Back channels
work in conjunction with the Surround Rear channels to provide a more engaging and enveloping
listening experience. Due to the varying nature of
film soundtracks and music, you may prefer to activate or deactivate the Surround Backs. For example,
Dolby Digital 5.1 and DTS soundtracks benefit most
from the addition of Surround Back channels, since
they provide discrete rear channels. Pro Logic
soundtracks, on the other hand, provide a mono
surround track, which yields a less satisfying experience when using the Surround Backs.
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.
PRODUCT FEATURES
ADCOM OWNER’S MANUAL | 11
[11] Input Selector buttons:
These buttons select the active video and audio
input for the GTP-830 and the audio signal sent to
the Preamp Outputs, Tape, Aux Outputs, Video 3 &
4 and TV monitor outputs. Video inputs 1, 2 and 3
also select the Digital Inputs 1, 2 and 3, respectively.
Video 1: Video 1 selects the signal from a
TV/Satellite/Cable receiver or DVD player connected
to Video 1 as the active input.
The Digital Input 1 [22] is linked to the Video 1
input. Digital Input 1 allows for connection of a digital source with an optical digital output. Whenever
Video 1 is selected, Digital Input 1 will also be
selected; in the display the “DIGITAL 1” indicator
will start to blink. If a digital audio signal is detected, the “DIGITAL 1” indicator will stop blinking and
remain lit. If no digital audio signal is detected,
“DIGITAL 1” indicator will cease blinking and
extinguish, and the analog inputs will be used.
Video 2: Video 2 selects the signal from a
TV/Satellite/Cable receiver or DVD player connected
to Video 2 as the active input.
The Digital Input 2 [22] is linked to the Video 2
Input. Digital Input 2 allows for connection of a digital source with a coaxial digital output. Whenever
Video 2 is selected, Digital Input 2 will also be
selected; in the display the “DIGITAL 2” indicator
will start to blink. If a digital audio signal is detected, the “DIGITAL 2” indicator will stop blinking and
remain lit. If no digital audio signal is detected,
“DIGITAL 2” indicator will cease blinking and
extinguish, and the analog inputs will be used.
Video 3 & Video 4: Video 3 & 4 select the signal
from a TV/Satellite/Cable receiver, DVD player or
VCR connected to Video 3 or Video 4 as the active
input. The Video 3 & 4 inputs also have video and
analog audio outputs specifically for recording
video devices.
The Digital Input 3 [22] is linked to the Video 3
input. Digital Input 3 allows for connection of a digital source with a coaxial digital output. Whenever
Video 3 is selected, Digital Input 3 will also be
selected; in the display the “DIGITAL 3” indicator
will start to blink. If a digital audio signal is detected, the “DIGITAL 3” indicator will stop blinking and
remain lit. If no digital audio signal is detected,
“DIGITAL 3” indicator will cease blinking and
extinguish, and the analog inputs will be used.
Video 5: For an easy and temporary connection you
can connect a camcorder (playback only) or video
game console using the Video 5 front panel input. If
the game console or camcorder is mono, connect
the audio lead to the R (Right) audio socket.
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 currently 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 affecting the
recording process. When Tape Monitor is selected,
the button will remain lit until Tape Monitor is
disengaged again.
CD: Selects the CD as the active input.
AM: Selects AM radio. AM is also automatically
selected when an AM Preset is selected.
FM: Selects FM radio. FM is also automatically
selected when an FM Preset is selected.
[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 dis-
GTP-830 DIGITAL PROCESSING TUNER/PREAMPLIFIER
12 | ADCOM OWNER’S MANUAL
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