I have a Jl audio 12w0 svc 4 ohm sub with sealed box, an alpine mrv t-500 amp along with a coustic xm-3 crossover for sale. Im looking to get around $250 for all of this plus shipping or mail me if you want to buy an individual piece. All equipment is in good condition, but the crossover does show some wear. I have the boxes and papers for the sub.
check out what this amp is going for on ebay alone ebay amp

check out this auction

http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1219877339

Real specs are as follows: at 4ohms 50watts X 2, at 2ohms 100watts X 2, Bridged into 4ohms 200watts X 1...all RMS. Dynamic power (actual) is as follows: at 4ohms 75watts X2, at 2ohms 150watts X2, bridged into 4ohms 300watts X1

sub specs http://www.jlaudio.com/subwoofers/12w0.html

crossover specs http://www.coustic.com/xm3.cfm