I'm havin' a bit of a problem with my amp...nothin' technical, but it just shows how little I really know about amps. I'm going to be needing more volume soon because we're going to be playing in a packed out gym, but even in rehearsal I can't get loud enough without the cones on my 2x15 jumpin' around quite a bit. I've got my EQ flat with highs boosted a bit, both low and high knobs about 3, and low, high, and mid-notch switches off. What else can I do to get the sound I want, at the volume I want, without makin' the cones on my 2x15 go crazy (and possibly blowing them )? Edit: Just needed to add that saying I need more volume doesn't mean I've got all knobs on 10 and I'm expecting more volume, I just can't get decently loud without makin' the cones go nuts...Actually, I have my channel 1 volume about 6 and my master about 4 or 5 with my bass (Fender MIM Jazz 5) on about 8. I know the headroom is there, I just gotta figure out what I'm doin' wrong makin' the cones jump so much.