4
Rear panel facilities and connections
GND
Use this GND terminal for connecting the ground (or earth) wire
of other component if humming noise is heard.
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.
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).
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.
Caution:
• 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
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.
• 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.
TRIGGER
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.
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.
Improper connection
Inserted completely
2 CHANNEL AMPLIFIER
MODEL NO.
ADM-2.1
GND
AC INLET
L
R
IN
12
V
TRIGGER
OFF
AUDIO
MIN
MAX
OUT
IN
L
L
R
R
SPEAKERS
L
R
AUDIO
12 V
TRIGGER
INPUT
LEVEL
TRIGGER
• Insert all plugs and connectors securely. Improper connections
can result in noise, poor performance, or damage to the
equipment.
• Do not bind audio connection cables with power cords and
speaker cables. Doing so may adversely affect the sound
quality.
#US_ADM-2.1_04-07.p65 8/25/00, 6:22 PM4
(16 pages)
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