B&K AVP 4090 - Manual (Page 13)

Page 11
16. Surround outputs -
Outputs for your surround system. These variable level outputs are
provided with the Surround Sound Processor option for sending signal to
the power amplifiers as follows.
FRONT L - Provides an audio output signal for sending to the input
channel of the power amplifier for the front left speaker.
FRONT R - Provides an audio output signal for sending to the input
channel of the power amplifier for the front right speaker.
REAR L - Provides an audio output signal for sending to the input
channel of the power amplifier for the rear left speaker.
REAR R - Provides an audio output signal for sending to the input
channel of the power amplifier for the rear right speaker.
SUB 1 & 2 - Provides an audio output signal for sending to the input
channel of the power amplifier for a passive subwoofer or
the input of a powered subwoofer.
CENTER 1 & 2 - Provides an audio output signal for sending to the input
channel of the power amplifier for the center speaker.