well to tell ya the truth audiobahn subs aren't all that great...for 200 you could get 2 12" vmaxx's or for a little extra...2 12" shivas. Audiobahn subs just aren't very reliable, from what I hear on these forums. I have had some trouble with their amps though. The one amp I had said it put out 2000rms @ 1 ohm and it is hardly one ohm stable(overheats) and it only put out 1200rms. So I kinda gave up on audiobahn because of the trouble I had and almost everybody said they aren't great for the price you pay. I wouldn't have someone pay me to have those subs in my car!!!
Don't get audiobahn, get 2 15" Cerwin Vega vmaxs instead. Audiobahn has a high failure rate, and they sound like trash. They aren't efficient at all, a good sub with half of the power an audiobahn takes would sound better.