Contents
Before using
2 Channel Amplifier
Important Safeguards ....................................... 2
Features ............................................................. 3
Supplied accessory ........................................... 3
Precautions........................................................ 3
ADM-2.1
Instruction Manual
Facilities and connections
Rear panel facilities and connections ............... 4
Connection diagram.......................................... 5
Front panel facilities and connections.............. 6
Operations......................................................... 7
Thank you for purchasing the Integra 2 Channel
Amplifier.
Appendix
Please read this manual thoroughly before making
connections and plugging in the unit.
Following the instructions in this manual will enable
you to obtain optimum performance and listening
enjoyment from your new 2 Channel Amplifier. Please
retain this manual for future reference.
Troubleshooting guide...................................... 7
Specifications ................................... Back cover
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Features
Precautions
1. Warranty Claim
WIDE RANGE AMPLIFIER TECHNOLOGY (WRAT)
You can find the serial number on the rear panel of this unit. In
case of warranty claim, please report this number.
WRAT virtually eliminates the adverse effects of counter-
electromotive force by:
2. Recording Copyright
Recording of copyrighted material for other than personal use is
illegal without permission of the copyright holder.
1) applying an uncommonly low amount of NFB (negative feed-
back),
2) using carefully selected, high-tolerance, wide range parts in all
critical sections, and
3. AC Fuse
The fuse is located inside the chassis and is not user-serviceable. If
the power does not come on, contact your Integra/Onkyo autho-
rized service station.
3) incorporating innovative circuit topology based upon decades
of high-end amplifier design experience — the final result is flat
response beyond 100 kHz.
4. Care
AUTO POWER ON/OFF FUNCTION
From time to time you should wipe the front and rear panels and
the cabinet with a soft cloth. For heavier dirt, dampen a soft cloth
in a weak solution of mild detergent and water, wring it out dry,
and wipe off the dirt. Following this, dry immediately with a clean
cloth. Do not use rough material, thinner, alcohol or other chemi-
cal solvents or cloths since these could damage the finish or re-
move the panel lettering.
You can turn on and off the ADM-2.1 via a signal input to the
AUDIO IN jacks or 12V TRIGGER IN jack.
AUDIO IN/OUT LINK FUNCTION
The signal inputs from the AUDIO IN jacks are output from the
AUDIO OUT jacks. When used as a 2 channel amplifier in a multi
room configuration, you can connect several ADM-2.1s to enjoy
the same source in several rooms.
5. Power
WARNING
BEFORE PLUGGING IN THE UNIT FOR THE FIRST TIME,
READ THE FOLLOWING SECTION CAREFULLY.
The voltage of the available power supply differs according to
country or region. Be sure that the power supply voltage of the
area where this unit will be used meets the required voltage (e.g.,
AC 120 V, 60 Hz) written on the rear panel.
For Canadian models
For models having a power cord with a polarized plug:
CAUTION: TO PREVENT ELECTRIC SHOCK, MATCH
WIDE BLADE OF PLUG TO WIDE SLOT, FULLY INSERT.
Modele pour les Canadien
Sur les modèles dont la fiche est polarisée:
ATTENTION: POUR ÉVITER LES CHOCS ÉLECTRIQUES,
INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE
DANS LA BORNE CORRESPONDANTE DE LA PRISE ET
POUSSER JUSQU’AU FOND.
Supplied accessory
Check that the following accessory is supplied with the ADM-2.1.
Power cord × 1
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Rear panel facilities and connections
Caution:
• Insert all plugs and connectors securely. Improper connections
can result in noise, poor performance, or damage to the
• Be sure to always refer to the instructions that came with the
component that you are connecting.
equipment.
Improper connection
• Do not plug in the power cord until all connections have been
made.
• Do not make connections to input or output jacks while the
ADM-2.1 is turned on.
• Always turn the volume of the control amplifier or
preamplifier down before turning on the ADM-2.1.
Inserted completely
• For input and output jacks, red connectors (marked R) are used
for the right channel and white connectors (marked L) are used
for the left channel.
• Do not bind audio connection cables with power cords and
speaker cables. Doing so may adversely affect the sound
quality.
AC INLET
SPEAKERS
GND
2
CHANNEL AMPLIFIER
MODEL NO. ADM-2.1
L
L
INPUT
LEVEL
12 V
AUDIO
OUT IN
TRIGGER
TRIGGER
L
L
12V
AUDIO OFF TRIGGER
R
R
IN
R
R
MIN
MAX
GND
TRIGGER
Use this GND terminal for connecting the ground (or earth) wire
of other component if humming noise is heard.
Set this TRIGGER switch before turning on the ADM-2.1.
To turn on the ADM-2.1 with the signal input from the 12V
TRIGGER IN jack, set the TRIGGER switch to 12V TRIGGER.
To turn on the ADM-2.1 with the signal input from the AUDIO IN
jack, set the TRIGGER switch to AUDIO (Auto Power On/Off
Function). If you do not use Auto Power Function, set the
TRIGGER switch to OFF.
AUDIO IN/OUT
These are the analog audio inputs and outputs. Use an RCA-type
audio connection cable to connect the output jacks of the device to
the AUDIO IN jacks on the ADM-2.1. When connecting a control
amplifier or preamplifier, connect the PRE OUT jacks to the
AUDIO IN jacks.
12V TRIGGER IN
If you connect the AUDIO OUT jacks of the ADM-2.1 to the
AUDIO IN jacks of another ADM-2.1, the signal input at the
AUDIO IN jacks of the ADM-2.1 is also output from the AUDIO
OUT jacks (Audio In/Out Link Function).
If the connected control amplifiers or preamplifiers have a 12V
TRIGGER output jack, use 1/8-inch 2P mini-jack cable to connect
the 12V TRIGGER IN jack on the ADM-2.1. This jack works on
between 5 to 12 volts DC. When the ADM-2.1 is in the standby
state and the TRIGGER switch is set to 12V TRIGGER, you can
switch the ADM-2.1 between the on and standby states with
operations at the control amplifier or preamplifier.
If you set the TRIGGER switch to AUDIO, the power of the
connected ADM-2.1 turns on automatically when an audio signal
is supplied to the AUDIO IN jacks (Auto Power On/Off Function).
Note:
When a plug is connected to the 12V TRIGGER jack, be sure to
connect the analog output jacks (or PRE OUT jacks) of the device
to the AUDIO IN jacks of the ADM-2.1. Otherwise, no sound will
be produced.
INPUT LEVEL
Turn this INPUT LEVEL control to adjust the input level of the
signal from the AUDIO IN jacks. Normally, set to MAX.
Note:
When a CD player is connected to the ADM-2.1, be sure to adjust
the INPUT LEVEL control.
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Rear panel facilities and connections
• When you are using only one
speaker or when you wish to
listen to monaural (mono)
sound, a single speaker should
never be connected in parallel
to both the right and left-
channel terminals simultane-
ously.
SPEAKERS
Connect the jacks on the speakers to the SPEAKERS terminals
using the speaker cables. These terminals are compatible with
banana plug connections.
NO!
1
2
3
4
5
Strip away 15 mm (5/8 in.) of wire insulation.
Twist wire ends very tight.
Unscrew.
+
–
–
+
L
+
–
–
+
R
R
L
Insert wire.
• To prevent damage to cir-
cuitry, never short-circuit the
positive (+) and negative (–)
speaker wire.
Screw.
15mm
(5/8 in.)
1
3
2
5
NO!
4
AC INLET
Plug the supplied power cord into this AC INLET and then into the
power outlet on the wall.
• Do not use a power cord other than the one supplied with the
ADM-2.1. The power cord supplied is designed for use with
the ADM-2.1 and should not be used with any other device.
• Do not connect any devices other than speakers to these
terminals.
• Never disconnect the power cord from the ADM-2.1 while the
other end is plugged into the wall outlet. Doing so may cause
an electric shock. Always connect by plugging into the wall
outlet last and disconnect by unplugging from the wall outlet
first.
• Be sure not to mistake the positive and negative outputs or the
left and right speakers. Doing so will result in an unnatural
sound space.
• Only connect speakers with an impedance of 6 ohms or higher.
If a speaker with an impedance of less than 6 ohms is
connected, it may damage the ADM-2.1.
Connection diagram
Since the many users will purchase the ADM-2.1 together with the
DTR-7.1, here is an explanation of how to connect the ADM-2.1 to
the DTR-7.1.
When connecting the ADM-2.1 to 2 channel control amplifier or
preamplifier, connect the AUDIO IN jacks of the ADM-2.1 to the
PRE OUT FRONT jacks of the control amplifier or preamplifier,
and connect the front speakers to the SPEAKERS terminals of the
ADM-2.1.
12V TRIGGER OUT jack
DTR-7.1
ANTENA
AM
FM
75
COMPONENT
VIDEO
RS 232
R
L
REMOTE
FRONT
DIGITAL
OUTPUT
CONTROL
SPEAKERS
Y
(
)
12
V
OPTICAL
PRE
OUT
TRIGGER
B
R
L
INPUT
PB
1
A
ZONE
L
2
MAIN
AC OUTLETS
AC 120V 60Hz
SWITCHED
FRONT
CENTER
SPEAKER
1
IR IN
DIGITAL
INPUT
SURR
BACK
SPEAKER
R
VIDEO
S
VIDEO
TOTAL 120W 1A MAX.
(
)
OPTICAL
SURR
2
OUT
PR
VIDEO
1
SURR
BACK
PRE OUT
SURR BACK
jacks
(SB)
GND
R
R
L
L
1
IN
OUT
IN
Y
DIGITAL
INPUT
COAXAL
SUB
WOOFER
CENTER
SURR
SPEAKERS
INPUT
PB
2
(
)
2
MAIN
VIDEO
2
CAUTION:
R
L
SPEAKER IMPEDANCE
FRONT
SURR
OUT
PR
ZONE
2
6
OHMS MIN. PER EACH
SPEAKERS
SPEAKER TERMINAL
TAPE
IN
VIDEO
3
IN
ZONE
2
Y
AC INLET
OUTPUT
PB
(SB)
DVD
SURR
BACK
AV RECEIVER
CD
PH
IN
MODEL NO. DTR-7.1
SUB
WOOFER
PR
ZONE
OUT
2
MONITOR
OUT
CENTER
MULTI CHANNEL
INPUT
R
L
R
L
VIDEO
S
VIDEO
ADM-2.1
AC INLET
SPEAKERS
GND
2
CHANNEL AMPLIFIER
MODEL NO. ADM-2.1
L
L
Power cord
(supplied)
INPUT
LEVEL
12
V
AUDIO
TRIGGER
TRIGGER
OUT
IN
L
L
12V
AUDIO OFF TRIGGER
R
R
IN
R
R
MIN
MAX
Set to 12V TRIGGER.
Surround
Surround
back right
speaker
back left
speaker
To an AC
wall outlet
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Front panel facilities and connections
Power
On
Off
Standby/On
ADM-2.1
Power
When the TRIGGER switch is set to AUDIO
After plugging in the power cord into the rear panel and wall
outlet, pressing this switch connects the ADM-2.1 to the AC
mains. The function of this switch differs depending on the setting
of the TRIGGER switch on the rear panel. Before turning on the
power, be sure to set the TRIGGER switch. Besides, before
turning on the power, make sure all cables are properly connected.
If no signal is supplied to the AUDIO IN jacks, pressing the Power
switch enters the standby state and the Standby/On indicator lights
red after flashing red for 5 seconds.
If an audio signal is supplied to the AUDIO IN jacks, pressing the
Power switch turns on the ADM-2.1 and the Standby/On indicator
lights orange after flashing red for 5 seconds.
The TRIGGER switch is factory set to OFF.
If the ADM-2.1 is in the standby state, the ADM-2.1 turns on
automatically when an audio signal is supplied to the AUDIO IN
jacks.
When the TRIGGER switch is set to OFF
When the signal input to the AUDIO IN jacks is not supplied for
more than 4 minutes, the indicator turns to red and the ADM-2.1
enters standby state (Auto Power On/Off Function).
Pressing the Power switch turns on the ADM-2.1. The Standby/On
indicator lights orange after flashing red for 5 seconds.
Press the Power switch again to turn off the ADM-2.1.
Press the Power switch to turn off the ADM-2.1.
When the TRIGGER switch is set to 12V TRIGGER
Note:
If no signal is supplied to the 12V TRIGGER IN jack, pressing the
Power switch enters the standby state and the Standby/On
indicator lights red.
You cannot use the Auto Power On Function when the power is
turned off. To use the Auto Power On Function, leave the
ADM-2.1 in the standby state once the ADM-2.1 enters the
standby state.
If 12V DC is supplied to the 12V TRIGGER IN jack, pressing the
Power switch turns on the ADM-2.1 and the Standby/On indicator
lights orange after flashing red for 5 seconds.
If the ADM-2.1 is in the standby state, the ADM-2.1 turns on
automatically when 12V DC is supplied to the 12V TRIGGER IN
jack.
Standby/On indicator
The Standby/On indicator lights red when the ADM-2.1 is in the
standby state and lights orange when the ADM-2.1 is turned on.
When the signal input to the 12V TRIGGER IN jack is interrupted,
the indicator lights red and the ADM-2.1 enters standby state
(Auto Power On/Off Function).
Press the Power switch to turn off the ADM-2.1.
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Operations
Troubleshooting guide
To listen to music or view your favorite movies, follow the
operations below.
No power.
• The power cord is disconnected.
The procedures given below assume that the other system
components are already connected. (For example, that the source
components are already connected to the control amplifier or the
preamplifier.)
➞
Connect the power cord.
• The setting of the TRIGGER switch is wrong.
Set the TRIGGER switch to the appropriate position.
➞
• With the TRIGGER switch set to a position other than OFF,
the Power switch is pressed again immediately after turning
the power off.
1. Lower the volume at the control amplifier or
preamplifier.
➞
Be sure to leave more than 3 seconds before turning the
power on again.
Lower the volume of the control amplifier or preamplifier to
the minimum so that when the ADM-2.1 is turned on, you do
not hear loud unwanted sounds.
Power turns on but no sound.
2. Select the input on the control amplifier or
preamplifier.
• Bad connections or wiring.
➞
Check connections, speaker cables, etc.
Select the proper input on the control amplifier or
preamplifier.
• Amplifier protection circuitry has been activated.
➞
Contact your Integra/Onkyo Service Center.
• The INPUT LEVEL control is set to MIN.
Turn the INPUT LEVEL control to adjust the input
level.
3. Slowly increase the volume of the control
amplifier or preamplifier.
➞
Now all that remains is to control the control amplifier or
preamplifier and the other connected system components to
enjoy your music or movies.
The Standby/On indicator does not light when the Power
switch is pressed.
• Bad connections or wiring.
➞
Check if the power cord is properly connected. If the
indicator still does not light, turn off the ADM-2.1,
disconnect the power cord, and contact your Integra/
Onkyo Service Center.
The Standby/On indicator flashes red for more than
7 seconds when the Power switch is pressed.
•
A malfunction.
➞
Press the Power switch to turn off the ADM-2.1. After
3 seconds, press the Power switch again to turn on the
ADM-2.1. If the indicator still flashes, turn off the
ADM-2.1, disconnect the power cord, and contact your
Integra/Onkyo Service Center.
No sound from the speaker, or at very low volume.
• Bad connections or wiring.
➞
Check connections, speaker cables, etc.
• The INPUT LEVEL control is set to MIN.
Turn the INPUT LEVEL control to adjust the input
level.
➞
• The settings on the control amplifier or preamplifier are
wrong.
➞
Check the settings on the control amplifier or
preamplifier.
The left and right sounds are unbalanced or reversed.
• Bad connections or wiring.
➞
Check connections, speaker cables, etc.
• The polarity of the speaker cable is wrong.
➞
Check the polarity of the speaker cable.
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Specifications
AMPLIFIER SECTION
GENERAL
Power Output:
100 Watts per channel min. RMS at
Power Supply:
AC 120 V, 60 Hz
2.5 A
8 ohms, both channel driven from
20 to 20,000 Hz with no more than
0.08 % total harmonic distortion.
Power Consumption:
Dimensions (W × H × D):
435 × 145 × 316 mm
17-1/8" × 5-11/16" × 12-7/16"
8.5 kg, 18.7 lbs.
125 Watts per channel min. RMS at
6 ohms, both channel driven from
1 kHz with no more than 0.1 %
total harmonic distortion.
Weight:
Specifications and features are subject to change without notice.
Dynamic Power Output:
Total Harmonic Distortion:
IM Distortion:
2 × 140 Watts at 8 ohms
0.08 % at rated power
0.08 % at rated power
100 at 8 ohms
Damping Factor:
Input Sensitivity and Impedance: 1 V, 50 kohms
Output Level and Impedance:
Rated Speaker Impedance:
Frequency Response:
1 V, 10 kohms
6 ohms MIN
10 Hz – 100 kHz, ±1 dB
110 dB (IHF A, 0.5 V input)
Signal-to-Noise Ratio:
Integra Division of
ONKYO U.S.A. CORPORATION
200 Williams Drive, Ramsey, N.J. 07446, U.S.A.
Integra Division of
ONKYO CORPORATION
Sales & Product Planning Div. :
2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN
Tel: 072-831-8111 Fax: 072-833-5222
E
W0008-1
SN 29343005
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