I have a 15'' shocker super extreme for sale or trade.Its in great shape and it has only seen like 900 watts.It has dual .7ohm coils.I am asking $300 for this sub or I will trade for a DD9515E, 15'' RE XXX, a pair of 15'' JL W3v2.I am accepting trades so let me know what you have. I also have pictures of the shocker upon request.