Sub Sounds Different

Hi, I have a Lanzar amp, 200RMS x 2 @ 4ohms, I know its not the best brand but it's just a temporary, and a Soundstream sub, 350rms @ 4ohms, SVC. A week ago I was playin a bass testing song and had it up probably the loudest it's been. After about 3 minutes of that the sub all of a sudden went quieter and now sounds hollow. Now no if I turn it up to the same level it just sounds even hollower. I didn't hear any distortion and read when u blow the voice coil it smells like burning or something. I posted on another forum and got told I could have damaged the sealant inside the box, so I resealed it but it hasn't really made a difference. Anyone know what might be the matter with my sub or amp for that matter. I have tried the sub on the other channel that I wasn't using when it happened and it still sounded the same, so this suggests to me that its the sub but what, if anything can I do to repair it. Any information would be appreciated.

you could have possibly warped your voice coil I have seen what you have descibed form this problem with some of our competiton subs2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR

2007 USACI World Champion

2007 World Record

2006 USACI Finals 2nd Place

Hollow quieter sound = distortion. You damaged your subwoofer. Badly. It probably isn't worth repairing or thinking about. Take sub to dumpster. Buy new sub. Know your equipment's limits next time. New Project: 2003 Pathfinder

Yeah if that amp was bridged it exceeds the power handling of that sub probably. Make sure your gain is set proper next time.99 Blazer LT.   Yellow Top. Big 3. Infinity Kappa Speakers All Around. Jensen CD/DVD flip out. 2 Infinity Kappa Perfect 12DVQs powered by a Alpine PDX600.1 (in one custom box, building a FG box)

Thanks for the replies, when its in the boot with the lid closed you can't hear the hollowness so I'll keep running it for a while.