Alpine Type S SWS-12D4 12 Inch 1500 Watt Max 4 Ohm Round Car Audio Subwoofer - Walmart.com
Power Acoustik MOFO Type S Series Subwoofer (12", 2,500 Watts max, Dual 2Ω) in the Mobile Audio department at Lowes.com
Best Buy: Alpine Type-S 15" Dual-Voice-Coil 8-Ohm Subwoofer Black SWS-15D4
Power Acoustik MOFO Type S Series Subwoofer (12", 2,500 Watts max, Dual 2Ω) in the Mobile Audio department at Lowes.com
Universal Car Stereo Hatchback Sealed Dual 10" Alpine Bundle Type S S-W10D2 Sub Box Enclosure with Harmony HA-A800.1 Amplifier & 4GA Amp Kit - Walmart.com
Alpine S-W12D4 Car Subwoofer1800W Max, 600W RMS 12" Type-S Series Dual 4 Ohm Car Subwoofer - Walmart.com
Universal Car Stereo Vented Port Dual 12" Alpine Type S S-W12D2 Sub Box Enclosure - Final 2 Ohm | ALPINE-PACK124A
Amazon.com: Universal Car Stereo Vented Port Single 12" Alpine S-W12D4 Type S Car Audio Subwoofer Custom Sub Box Enclosure Package New Without Amp : Electronics
Amazon.com: Universal Car Stereo Vented Port Single 10" Alpine S-W10D4 Type S Car Audio Subwoofer Custom Sub Box Enclosure Package New : Electronics