Well first off the amp that i have is a AMPEG BA115T. This just happened about 15 mins ago. Me and my friend were jammining out and then i turned my amp off. So then my friends little brother decides to sit on it. Well it has that stupid tilt back feature and when he stood up my amp fell over. I thought it would be perfectly fine. So then i went to play it and whenever i hit a note it sounds like its kinda of distorted or muffled. Like what happens if you got the volume turned up way to loud. Note that i know i didnt blow the speaker cuz i havent played on it on a higher volume then 4. Anyone know what could be wrong with it and how i can fix it? O and it only seems to happen when i hit low notes or turn my bass up.