My drummer has had this off brand 4x12 cab sitting around his house forever, it's really big for a guitar cab, and has always been obnoxiously bassy for guitar use, no matter what the EQ settings are. So we started thinking maybe it can be used for bass. I brought it home tonight and it sounds good with my amp. Lots of muddy midrange, but it sounds good, and I can't hear any distortion in the speakers or anything and they don't look like they are moving in and out anymore than any bass speakers I've seen. But since I still can't be sure if this is a guitar or bass cab, I was wondering what I could look for, what sort of warning signs would there be, if it turns out the speakers can't handle bass? Thanks for any help.