I have 2 Dual 4ohm DB Drive Platinum 15's I am looking to get rid of. These are great sub's, they sound really good, and they get loud at least to me it's loud. I was able to do a 143.1@40hz with one of these subs in a 2.9cf@35hz enclosure that was being powered by a Diamond D3600.1. It was done on the new term-lab on the dash. These sub-woofers are current in a 7.5cf@30hz enclosure being pushed by a Rockford T2000BD and I absolutely love it. But I have gotten out of the loud bass now and want something smaller. Well not necessarily smaller but just a single 15" setup instead of 2. The sub's have a 180oz magnet and a sensitivity rating of 89db and it's 1000rms. These sub's are way under rated. I am pushing these subs with Rockford T2000bd at 1ohm and they are just begging for more. A local guy here has 2 of these same 15's being ran off of a Digital Designs Z1 and it's crazy loud. I am willing to trade subs if anyone has anything. I would like something along the lines of the FI Q, BL, BTL, for DD a 9515 would be nice but would take a 3515 if presented and in good shape, or a RE SX. Basically any sub along those lines I would be interested so just PM me what you got. If you don't have anything for a trade I'd be willing to do 250 shipped for the pair or 125 plus shipping for each. A little more info on these sub-woofers can be found here...http://dbdrive.net/html_english/07_platinum_subwoofers_plw.html