I have 1 10inch Audiobahn AWT10X in a NICE enclosure I would part with for $150 OBO. For a single 10 it sure as hell throws out alot of sound!
Specs on the sub can be found at HERE!
I also have an MTX 8100d amp that I'm willing to part with that you could use to feed the speaker. let me know lanczakb@hotmail.com