Quote Originally Posted by Stunt0Rider View Post
I am going to go with 2 of these.
Kenwood KFC-W3012 KFC Series 12" 4-ohm subwoofer at Crutchfield.com
And this.
Rockford Fosgate Prime R300-4 4-channel car amplifier — 50 watts RMS x 4 at Crutchfield.com

Why are you going to use a 4ch amp to power a sub? I am sorry but that makes absolutely no sense. At least go with a mono or at worst a 2ch amp. But using a 4ch amp rated at 50watts is not going to do anything to move those speakers.