Alpine R-Series R2-W12D2 12 Inch Dual 2-Ohm Voice Coils Subwoofer with 750W RMS
Insane Bass From Two 12" Alpine Type R (SWR12D4) Subwoofers!! - YouTube
Alpine 10 Inch Type-R Subwoofer (R-W10D2) | SK Customs Car Audio & Home Theater | Atlanta | Norcross | Duluth | John's Creek
Amazon.com: Alpine ALP19-R-W12D4 Car Audio Type R Series Sub Dual 4 Ohm 1500W Peak 12" Subwoofer : Electronics
Alpine SWR-1222D Type-R 12" subwoofer with dual 2-ohm voice coils at Crutchfield
Alpine R2-SB12V Single Type R2 12-in Subwoofer in Vented Enclosure - Creative Audio
Universal Car Stereo Slotted S Port Single 10" Alpine Bundle Type R R-W10D4 Sub Box Enclosure with Harmony HA-A800.1 Amplifier & 4GA Amp Kit - Walmart.com
Alpine 12” Type R-Series Powered Ported Bass Package Includes one Alpine R-W12D4 12” subwoofer, R-A75M amplifier, and 2.25 ft³ optimized ported enclosure
2) Alpine Type R 12 Inch 2250 Watt Max 4 Ohm Round Car Audio Subwoofer - Walmart.com
Alpine Type-R SWR-12D4 12" 3000 Watt Dual 4-Ohm Car Audio Subwoofer Sub SWR12D4 | Audio Savings