Amazon.com: Lanzar 6.5” Car Subwoofer Speaker - Black Non-Pressed Paper Cone, Aluminum Voice Coil, 4 Ohm Impedance, 600 Watt Power and Foam Edge Suspension for Vehicle Audio Stereo Sound System - MAXP64 : Electronics
Amazon.com: CT Sounds BIO-6-5-COX 6.5 Inch Coaxial Car Speakers, 200 Watts Max, Pair : Electronics
Rockville W65K9D4 6.5" 1000w Car Audio Subwoofer Dual 4-Ohm Sub CEA Compliant