Hi all! I recently bought a Trace Elliot stack for a VERY good price. The stack consists of a 350W TE head, 4x10"(1048H) and 1x15"(1518) TE cabinets. I have noticed that when I go over a certain volume the sound from the 15" becomes a wee bit distorted, sort of like I´m using an overdrive pedal. It gets louder as the volume is turned up higher. I disconnected the 15" from the stack and the rig sounded fine using just the 4x10" so I have isolated the problem to the 15" cabinet. Have you got any idea what I am up against? Loose stuff within the cabinet? Faulty wiring? Faulty speaker/driver? Is this repairable? I have already tried taking the grill of and tightened the screws on the speaker, but to no avail. Now for the second part of my question: If my speaker is total, then I obviously have to buy a new one. Does anyone know what kind of drivers Trace Elliot used in it´s speakers from '93-'96? What kind of speaker is the closest to the TE sound? Eminence? JBL? Thanks a bunch in advance for your help!