My Bower & Wilkins MM-1 speakers had a weird problem with Kubuntu. The volume levels were.. unusual. If I set the volume to 50%, I couldn't hear a thing. At 60% it was okay, and at 70% it was FAR too loud.
The solution I found 1 was changing one existing line in
load-module module-udev-detect ignore_dB=1
ignore_dB=1 to it. That's all I had to do.