What happens if your bass amp speakers are out of phase with the PA? I played a place last night and had real trouble hearing myself on stage. It was a 150-250 seater with a fairly good PA (I think there were 2x18 subs on either side) and I brought both my 2x10 and 1x15 cabs. We showed up real early and were able to do 3 songs for sound check with a pre EQ D.I. coming off the amp. I try and keep the amp at a quiet volume so my band mates can hear their 1x12 combos and to give the sound man greater control over the full sound of the band, but I was really having trouble hearing myself. I turned the master volume completely off for the last song and I could hear myself coming out of the PA, fairly loudly with lots of bottom. All I needed was more midrange so I could hear the note deffinition. During the show I kept adding more mid and high end and taking away low end. It helped somewhat, but for sure everytime I turned up the amp, I really drowned out the guitar player right besied me. It was the first show ever where I really wished I had brought my little SWR WM12, titled it up on an angle (usually with a little 2x2 piece of wood) and run the amp flat. I think the band might have been happier without my twiddling knobs every song.