4
CONTROL
INPUT
120 VAC 60 HZ
1800 WATTS MAX.
AC1
SWITCHED AC OUTLET
5 to 30 Volts DC
+
–
To 120 V AC
(unswitched)
AC1
SWITCHED
AC Outlet on
Pre-amp, etc.
786-00
Unregulated
Power
Supply
White Striped
Side
AC2
CONTROLLED AC OUTLET
120 VAC 60 HZ
1800 WATTS MAX.
SWITCHED
OUTLET
STATUS
CONTROL
OUT
12VDC
CONTROL
IN
5-30V
AC or DC
-- +
-- +
INPUT
INDICATOR
CODE
SUB-
GROUP
VIDEO
IN
VIDEO
OUT
DELAY
IR
7
1
5
2
6
0
4
3
High Power
Amplifier #1
AC2
High Power
Amplifier #2
To 120 V AC
(unswitched)
B
A
9
8
7 6 5 4 3 2
1
0
F
E
D
C
DELAY SWITCH
POSITION
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0.05
0.1
0.2
0.3
0.5
0.75
1.0
2.0
3.0
5.0
7.5
10
20
30
50
60
DELAY
(In Seconds)
Fig. 5
Using the CONTROL IN terminals and Timed Delay
INSTALLATION
Because of the many ways in which it can be controlled, the AC2 offers great flexibility in providing power
ON/OFF switching of "Power Line Switchable" components for AC power management in A/V systems.
"Power Line Switchable" components are those that have manual power switches that can be left "ON" or
those that "remember" their "ON" condition when their power cords are unplugged.
Using the CONTROL IN terminals and Timed DELAY
Fig. 5 illustrates how the AC2 can be used to provide a delayed turn-on for a second power amplifier in an
audio or A/V system.
• This example makes use of the switched AC outlet on a preamp or A/V receiver.
• An unregulated DC adapter, 5 to 30 Volts output (in this case a Xantech 781C-00), is plugged into the
switched outlet of the preamp. The adapter output is connected to
both the input of an AC1 and an AC2
as shown.
• One AC1 is used, since the power to the first amplifier can be allowed to come on immediately. It does
not need to be delayed.
• The DELAY switch of the
AC2 is set for 2.0 seconds
of delay (the #7 position).
• If more than two amplifiers
are needed, simply add
additional AC2's as
needed. Additional AC2's,
however, should have their
CONTROL IN terminals
connected to the previous
AC2's CONTROL OUT ter-
minals. This permits each
delay to be set to the same
value, if desired.
It is recommended that de-
lays of at least 2 seconds be
used for this type of applica-
tion. This will insure that
each turn-on current surge is
cleared before the next one
arrives.
Using the VIDEO INPUT
Fig. 6 is an example of the
use of the VIDEO INput jack
on the AC2.
• In this case, the Video
Output of a TV monitor is
used to activate the AC2 to
turn on an external power
amplifier for high quality
audio.
AC2
