Hi there I just joined because I want best solution for my new subwoofer which are going to buy it from US. I have Alpine 9831, DLS MS6A, DLS CA21, silent coat, pro el cables and conectors. I had alpine swr 1242, mtx MTX XT12AV, magnat rx44, mtx 702, mtx 502. I'm going to buy a 15 or 18' subwoofer for SQL and hif200D amp. Thanks for hosting.