I Have 4 Sale 4 SSA ZCON 18s dual 1 ohm coils.. These subs are in Great shape.. They are 2250 RMS with a 3 inch 8 layer flat wound coil.. With 2 of these 18s did over a 161 with a crescendo 5500 on each sub.. They are $500 plus shipping new.. I will Take $250 a sub plus shipping if not local.. NO TRADES OF ANY KIND.. If interested message me with email address and can send pics of all 4 subs.. Right now they are in my wall and have to pull them.. Thanks for looking:shock: