It is not as easy as one would think...
First all your sources and what you want passed need to be in the same group. On the LS9 all channels are
grouped in eights.
Also, this method only allows one source to
duck the music. I guess you could assign a bunch of mics to a mix, have those mics unassigned to your mains(
mono or stereo), and have that mix assigned to your mains(
mono or stereo). Confusing, aint it?
So as it is now I have a wireless mic on
channel two and music on
channel 7:
I go to
channel 7, select
dynamic 1, select ducking, for key in source I select channe 2l(or mix as I suggested, but haven't tried above), then adjust all parameters accordingly.
Forgot to mention I don't use the ducking, rather
compressor. The
ducker seemed a little too aggressive no matter what I did. The
compressor was much better. I stomped on it, but works well.