so im currently running on my alpine type x 12" wired to a pdx 1.1200 in a big box. It sounds really good but my friend recently got a dd 9512 and was wondering if any of you knows what sub would be comparable to the 9512 at a cheaper price? thanks for your help.

 

A PSI Car Audio Platform 3 - http://psicaraudio.com/products-page...3-subwoofer-2/

David can tweak it if needed to easily beat out DD. The one time I visited his shot, he was reconing some DD 10's and showed me every place they were cutting corners as his ripped the drivers apart.