I'm using pulseaudio with a 6-channel USB sound device (which reports itself as a "CM106 Like Sound Device"). I added the following to
enable-lfe-remixing = yes lfe-crossover-freq = 50
If I open
pavucontrol and, under the configuration tab, select "Analog Surround 5.1 Output," everything works fine as best I can tell, except for the fact that I don't have 5 speakers. (I can test by moving the speakers around to different output ports and playing surround sound test files.)
Unfortunately, if I select either "Analog Surround 4.1 Output" or "Analog Surround 2.1 Output", I get no sound out of my subwoofer. Is there any way to make my subwoofer work with fewer than 6 channels?