I'm pretty sure the amp has problems. The woofer doesn't sound right, sounds like it's blown. I tried using a different amp and the woofer seems to be ok. I tried another speaker with the MKII amp, it had the same cracky sound to it, so I believe the amp is not good. This sub has encountered some moisture (don't ask), but i do believe it can be fixed. It was just easier to look for an amp and enclosure. I know there are people out there that have blown their drivers and can't get a replacement, then have bought other subs. What kind of price are we talking to get the amp fixed?? I could always clean up this enclosure, or build one with the same dimensions. Like I said, it was just easier to see if anybody just had something I could purchase. Thanks!