Who Makes the Best Subwoofers?
Sundown audio, digital designs, DC audio, Incriminator audio, SMD. the only decent mainstream subs are the really high end ones, such as 750w rms or higher, but those are usually over rated and cost upwards of $400.Check out realm of excursion or caraudioclassifieds.
According to CNET reviews, the Polk Audio DSW PRO 400 in the best rated subwoofer as of August 11, 2011. Read what users have to say, http://reviews.cnet.com/subwoofers/polk-audio-dsw-pro/4505-11312_7-32591754.html?tag=contentMain;contentBody
It depends on the type and size of subwoofer a person is referring to. For car subwoofers the JL Audio 10W6 received good ratings. The Alpine SWX-1234D and the Critical Mass UL 12 also received good ratings.