PSB CS500W Installation Manual page 8

12V DC Trigger
Connect the 12V trigger output of another device to the 12V trigger input of the amplifier using a high quality mono cable.
If the receiver does not have a 12V trigger output, using a 12V power
supply plugged into a switched outlet on the receiver provides the
same functionality. Connect the appropriate conductor to each screw
terminal, observing correct polarity.
RF CEN RS
AV Receiver
LF LS
SUB
+12V Trigger
Switched
Out
Outlet
or
GND (Sleeve)
12V DC (Tip)
0