FOR-A FA-9520 Operation Manual page 189

 Downmix Assign
Parameter
Left Left: EMB CH1
Right Right: EMB CH2
Center Center: EMB CH3
Left Surround Left Surround: EMB CH5
Right Surround Right Surround: EMB CH6
* If the same audio signal is selected for multiple CH SEL channels, or a NON-PCM signal is
assigned to an audio channel, the menu will be indicated with an "*", i.e. „*EMB1 CH1", and
DOWNMIX-L and DOWNMIX-R will be muted.
* The downmixed audio signals are output as Down Mix-L, and R.
To embed downmixed audio signals, Down Mix -L and R, see section 9-3-10 "SDI
Audio Output Setting". To output downmixed audio signal from AES connectors, see
section 9-3-11 "AES Audio Output Setting". To output from the analog audio output
connectors, see section 9-3-12 "Analog Audio Output Setting".
Default Setting range
EMB1 CH1-16
EMB2 CH1-16
AES CH1-8
ANALOG CH1-4
Dolby DECA CH1-8
Dolby DECB CH1-8
NOTE
189
Description
Selects audio signals to be
downmixed.