Amazon.com: Alpine Bundle Compatible with Universal Car S-W10D4 10" Subwoofer Dual 4 Ohm with S-A60M Class D Subwoofer 1200W Amplifier, and HA-AK4 Amplifier Install Kit : Electronics
Amazon.com: Universal Car Stereo Vented Port Single 12" Alpine S-W12D4 Type S Car Audio Subwoofer Custom Sub Box Enclosure Package New : Electronics