I think if you look at IASCA events over the last couple of years, Audiobahn subs have been used in cars that have one at least 5 to 10 first place trophies for SQ and SPL. Granted, they may be a small percentage overall, but I have heard no quality complaints about the speakers. Especially, when compared to speakers within their price range.
Keep in mind that Audiobahn's subwoofer price range goes from under 100.00 to almost 4000.00 for their 34" woofer.
[This message has been edited by dnewma04 (edited March 30, 2001).]