BB2 users where do you set your crossover?. I generally turn it pretty far down or off, particularly if I'm running a dirty signal. For cleaner tones, I like the zing it adds when the control knob spine is about horizontal. If the bass is brighter or darker, that can change (I'm up to 4 in my arsenal).
Today I'm testing running it full range with tracks out of iTunes and I expected that I'd like it all the way up, but I actually like it backed off of fully on, the controller knob spine is about vertical. AC/DC sounds good through it, with really punchy kick drums. It's not my hi-fi tower speakers, but, it ain't bad