I have a Kicker solobaric (round one) 10" sub I'll sell for 70 plus shipping. I think itll take up to 350 watts, and runs in a .66 box (if you have a box already, you can just stick a piece of wood in it to take away the airspace)....Nice sub, good sound, and bumps pretty good...I think this would be a good choice for ya. Let me know if your interested.
Ron