Well, I just bought a new receiver - Onkyo 876. I have been messing around with the Audyssey setup, and my sub clipped severly on a scene early on in Hellboy 2. Instead of just leaving it alone, I tried using different audio settings and sound modes to try and eliminate it and it continued to do it. It's damaged now, of course, it is somewhere around 10 yrs old, so it may have just worn out. Now it crackles and rattles at all different levels of bass. It's been a really good sub, and I'd like to just repair it if possible. I've never messed with spearker internals, besides installing new speakers in my vehicles, but I am handy and know my way around a soldering gun. Could it be possible to repair the driver, or replace it, or is it time to just replace the whole thing? I can't really afford to drop another grand on more audio gear right now, or else it would be an obvious time to upgrade. I don't know how much of a chance there is for me to replace the driver and find out there is really something wrong with the amp or something. Any input or suggestions from someone that knows more about building or repairing speakers would be greatly appreciated.