How to diagnose a sub problem? Amp or driver?

[wormraper]

ahhhhhhhh, you changed room. room response is INCREDIBLY important in a subs performance. even a few inches can make a big difference. do the sub crawl for your new room..

put the sub at the listening position and play a loud test tone, crawl around on the floor on hands and knees. when you find the place in the room where you feel the most lfe response THAT is where you should put the sub.

add to the fact that the new room is 29 feet in lenght you've almost DOUBLED the volume of the room. your sub is running out of headroom fast.