okay, but are they like total crap? I really don't like buying stuff online. I know the prices are better, but I haven't heard anything, and I don't trust it if I haven't heard it myself.
Audiobahn is close to the lowest quality crap you can but next to Pyramid and lanzar and Pyle. Everything Audiobahn is overrated and just sucks....yes Audiobahns will work but won't satisfy you if you hear a quality woofer. If you don't wanna spend much get some entry level Powerbass subs.
if you don't want to buy anything online.. just go down to circuit city and take a listen to what they have on display. I know my local circuit city actually has a nice demo area for subs.
for this power: http://www.onlinecarstereo.com/CarAudio/ProductDetail.aspx?ProductID=13034 perfect match. They are excellent woofers.