Originally Posted by matt95ssei

Before i had upgraded to aftermarket head unit, i was using the stock cd player with Infinity 6x9'* in the rear, and 2 Infinity Kappa Perfect 10.1 in the rear which were powered by a Memphis amp. I was using a line converter which was hooked to the sub wires for the OEM speakers, two channels, and was able to use the stock gain control slider as a bass booster. The bass was much louder with the stock setup than it is now with the aftermarket deck. I don't even have the subs in the car anymore as the deck has given my 6x9'* the ability to produce the bass that i crave without draining my alternator.

Best investment into a car audio system is to get a good deck, at least 20 watts RMS and 50 max (x 4 of course) and get a good set of speakers up front and in the rear deck, something like Infinity'* which are well known for their superior quality to nearly every other brand out there. I have had my Infinity'* for over 3 years now and have played heavy bass on them everyday and they are still like new and sound incredible. I get asked if i have subs when ever someone knew gets in the car! I love it.