I have a peavy tnt 115. About a year ago it was distoring when i played my bass through it. I swapped speakers with my sons amp and it was fine. I found some pinholes in the surround and filled them with nail polish. It sounded good until today. It started distorting again. I checked with my guitar and its nice and clean but with bass its distorted. Dont have my sons amp to swap the speakers. Could it be that the guitar doesnt vibrate the speaker enough to distort the speaker? I havent ruled out dirty pots on my bass but wouldnt they make a scratchy sound? Thanks for any advice. Id just hate to order a replacement basket and still have the problem.