Thank you for purchasing the Integra 2 Channel
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.
2 Channel Amplifier
Important Safeguards ....................................... 2
Features ............................................................. 3
Supplied accessory ........................................... 3
Precautions ........................................................ 3
Facilities and connections
Rear panel facilities and connections ............... 4
Connection diagram .......................................... 5
Front panel facilities and connections .............. 6
Operations ......................................................... 7
Troubleshooting guide ...................................... 7
Specifications ................................... Back cover
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TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR
TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT
REMOVE COVER (OR BACK). NO USER-SERVICEABLE
PARTS INSIDE. REFER SERVICING TO QUALIFIED
The lightning flash with arrowhead symbol, within an equilateral
triangle, is intended to alert the user to 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.
The exclamation point within an equilateral triangle is intended to
alert the user to the presence of important operating and maintenance
(servicing) instructions in the literature accompanying the appliance.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR
1. Read Instructions All the safety and operating instructions
should be read before the appliance is operated.
2. Retain Instructions The safety and operating instructions
should be retained for future reference.
3. Heed Warnings All warnings on the appliance and in the
operating instructions should be adhered to.
4. Follow Instructions All operating and use instructions
should be followed.
5. Cleaning Unplug the appliance from the wall outlet before
cleaning. The appliance should be cleaned only as recom-
mended by the manufacturer.
6. Attachments Do not use attachments not recommended by
the appliance manufacturer as they may cause hazards.
7. Water and Moisture Do not use the appliance near water for
example, near a bath tub, wash bowl, kitchen sink, or laundry
tub; in a wet basement; or near a swimming pool; and the like.
8. Accessories Do not place the appliance on an unstable cart,
stand, tripod, bracket, or table. The appliance may fall, causing
serious injury to a child or adult, and serious damage to the
appliance. Use only with a cart, stand, tripod, bracket, or table
recommended by the manufacturer, or sold with the appliance.
Any mounting of the appliance
should follow the manufacturer's
instructions, and should use a
mounting accessory recommended
by the manufacturer.
9. An appliance and cart combination
should be moved with care. Quick
stops, excessive force, and uneven
surfaces may cause the appliance
and cart combination to overturn.
10. Ventilation Slots and openings in the cabinet are provided
for ventilation and to ensure reliable operation of the appliance
and to protect it from overheating, and these openings must not
be blocked or covered. The openings should never be blocked
by placing the appliance on a bed, sofa, rug, or other similar
surface. The appliance should not be placed in a built-in instal-
lation such as a bookcase or rack unless proper ventilation is
provided. There should be free space of at least 20 cm (8 in.)
and an opening behind the appliance.
11. Power Sources The appliance should be operated only from
the type of power source indicated on the marking label. If you
are not sure of the type of power supply to your home, consult
your appliance dealer or local power company.
12. Grounding or Polarization The appliance may be equipped
with a polarized alternating current line plug (a plug having
one blade wider than the other). This plug will fit into the
power outlet only one way. This is a safety feature. If you are
unable to insert the plug fully into the outlet, try reversing the
plug. If the plug should still fail to fit, contact your electrician
to replace your obsolete outlet. Do not defeat the safety pur-
pose of the polarized plug.
13. Power-Cord Protection Power-supply cords should be
routed so that they are not likely to be walked on or pinched by
items placed upon or against them, paying particular attention
to cords at plugs, convenience receptacles, and the point where
they exit from the appliance.
14. Lightning For added protection for the appliance during a
lightning storm, or when it is left unattended and unused for
long periods of time, unplug it from the wall outlet and discon-
nect the antenna or cable system. This will prevent damage to
the appliance due to lightning and power-line surges.
15. Overloading Do not overload wall outlets, extension cords,
or integral convenience receptacles as this can result in a risk
of fire or electric shock.
16. Object and Liquid Entry Never push objects of any kind
into the appliance through openings as they may touch danger-
ous voltage points or short-out parts that could result in a fire
or electric shock. Never spill liquid of any kind on the appli-
17. Servicing Do not attempt to service the appliance yourself as
opening or removing covers may expose you to dangerous
voltage or other hazards. Refer all servicing to qualified ser-
18. Damage Requiring Service Unplug the appliance from the
wall outlet and refer servicing to qualified service personnel
under the following conditions:
A. When the power-supply cord or plug is damaged,
B. If liquid has been spilled, or objects have fallen into the
C. If the appliance has been exposed to rain or water,
D. If the appliance does not operate normally by following
the operating instructions. Adjust only those controls that
are covered by the operating instructions as an improper
adjustment of other controls may result in damage and will
often require extensive work by a qualified technician to
restore the appliance to its normal operation,
E. If the appliance has been dropped or damaged in any way,
F. When the appliance exhibits a distinct change in perfor-
mance this indicates a need for service.
19. Replacement PartsWhen replacement parts are required, be
sure the service technician has used replacement parts speci-
fied by the manufacturer or have the same characteristics as
the original part. Unauthorized substitutions may result in fire,
electric shock, or other hazards.
20. Safety Check Upon completion of any service or repairs to the
appliance, ask the service technician to perform safety checks to
determine that the appliance is in proper operation condition.
21. Wall or Ceiling Mounting The appliance should be mounted
to a wall or ceiling only as recommended by the manufacturer.
22. Heat The appliance should be situated away from heat
sources such as radiators, heat registers, stoves, or other appli-
ances (including amplifiers) that produce heat.
PORTABLE CART WARNING
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1. Warranty Claim
You can find the serial number on the rear panel of this unit. In
case of warranty claim, please report this number.
2. Recording Copyright
Recording of copyrighted material for other than personal use is
illegal without permission of the copyright holder.
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.
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.
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.
Check that the following accessory is supplied with the ADM-2.1.
WIDE RANGE AMPLIFIER TECHNOLOGY (WRAT)
WRAT virtually eliminates the adverse effects of counter-
electromotive force by:
1) applying an uncommonly low amount of NFB (negative feed-
2) using carefully selected, high-tolerance, wide range parts in all
critical sections, and
3) incorporating innovative circuit topology based upon decades
of high-end amplifier design experience -- the final result is flat
response beyond 100 kHz.
AUTO POWER ON/OFF FUNCTION
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.
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Rear panel facilities and connections
Use this GND terminal for connecting the ground (or earth) wire
of other component if humming noise is heard.
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.
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 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).
Turn this INPUT LEVEL control to adjust the input level of the
signal from the AUDIO IN jacks. Normally, set to MAX.
When a CD player is connected to the ADM-2.1, be sure to adjust
the INPUT LEVEL control.
· Be sure to always refer to the instructions that came with the
component that you are connecting.
· Do not plug in the power cord until all connections have been
· 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.
· 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.
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.
12V TRIGGER IN
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.
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
2 CHANNEL AMPLIFIER
· Insert all plugs and connectors securely. Improper connections
can result in noise, poor performance, or damage to the
· Do not bind audio connection cables with power cords and
speaker cables. Doing so may adversely affect the sound
8/25/00, 6:22 PM
6 OHMS MIN. PER EACH
AC 120V 60Hz
TOTAL 120W 1A MAX.
2 CHANNEL AMPLIFIER
Rear panel facilities and connections
Connect the jacks on the speakers to the SPEAKERS terminals
using the speaker cables. These terminals are compatible with
banana plug connections.
Strip away 15 mm (5/8 in.) of wire insulation.
Twist wire ends very tight.
· Do not connect any devices other than speakers to these
· Be sure not to mistake the positive and negative outputs or the
left and right speakers. Doing so will result in an unnatural
· 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.
· When you are using only one
speaker or when you wish to
sound, a single speaker should
never be connected in parallel
to both the right and left-
channel terminals simultane-
· To prevent damage to cir-
cuitry, never short-circuit the
positive (+) and negative ()
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.
· 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
Set to 12V TRIGGER.
To an AC
12V TRIGGER OUT jack
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
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
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