Hooked up to a Cerwin Vega EXL-400.4 amp. Sounds pretty good, distorts at very loud volumes. Could be the amp running out of power... I blew the tweets in just a few days, replaced them with some power acoustic nb1's. Sound pretty descent now.
Have a set hooked up to a Almani 600.4 Amp sounds okay but should of gone withRockford Fosgate cause had a set of those and they were the real deal but Audiobahn okay for the price.
I purchased these speakers for my '05 Nissan Maxima. They replaced my factory Bose system, which was a great sounding system to begin with but these speakers sound amazing. They produce really good mid bass up front and reproduce some low bass too. The tweeters sound really good with no distortion. I'm running them on a 4 channel visonik Amp which feeds them about 150 rms a piece. The construction of the woofers and tweeters are top quality. The magnets on the woofers are large and encased in chrome with rubber surround and twist pin power terminals to ensure your speaker wires are secure. The components are running on the crossovers that came with them and they sound really good. I would definitely buy these speakers again...and definitely from onlinecarstereo because they have the lowest price and they ship them fast.