I have a 15" ssa ZCON. been running for a few months now on 3500 still has perfect dvc .7 coils. previous owner reconed it, it looks a little rough but has no affect at all on the sound quality. might be getting a nicer car because this woofer has pumped my Grand Prix to pieces. I have a box made by CSCSTANG 4.7 net tuned to 32. willing to trade the box too for the right trade but you pay shipping for that. I'm in no hurry to get rid of it just seeing what you all have to offer. will post pics later if I get any interesting offers