for 250 shipped, i will sell my 15" shocker super extreme dual 1 ohm sub if you'd like it
if interested i can get more info, handles up to 4000w rms daily, serious sub...compared to 9915 for SPL and 8000x claims that they compete for sq of brahmas
i personally havent hooked it up, only to make sure it worked and it does..
he hit 154 something with 1 off 3500w in a sedan so station wagon....lol man...only imagine