I've got three 12" MA Audio subs enclosed in an MA Audio enclosure box. I had these set up in my car for about 2 weeks, but then I sold my Jeep and dont need them in my accord since I already have subs in the stock system. I paid $374.99 for this, and online I've seen prices for this between 300-500. Dimensions are 15"x21"x40". This is very heavy, so I'd prefer if someone would come pick it up(I live in Rochester, NY) but I will ship it via UPS but it will be quite expensive and at the buyers expense. The enclosure is probably worth about 250 alone, it's got an MA Audio cover, a mirror on the bottom and a strobe light in it that can be set up to strobe while the sub is on. There are three holes on the top of the sub for bass to go out with silver paint on the outside, one of these has a scratch on it. PICS AVAILABLE UPON REQUEST! This thing is a BEAST and seriously can win you competitions.

Specifications
EACH SUBWOOFER-
12"
400W Rms
800W Max
Dual 6-Ohm Voice Coils
180oz. Double Stacked Magnets
Mounting Depth: 6.1”
Mounting Diameter: 11.2”
Optimum Vented Box: 2 Cu/Ft
Round Port Diameter: (3) 3”
Square Port Area: 21 Sq/In
Port Length: 14”

400W-800W for EACH SUB...thats 1200-2400W for the set of three!

Here is a pic and some specifications so you can get an idea of what I am selling-
http://www.audio-warehouse.com/detail.asp?mdl=MBP312

there you can buy it for $320. I am selling mine for $150...less than 1/2 of the price there for only two weeks of use. If you have any questions you can email me, jshah0123@yahoo.com or just reply here and I will reply with the answer!