Alpine Type-R R2-W12D4 12" 750w RMS Car Audio Subwoofer+Vented Sub Box Enclosure - Walmart.com
Alpine 12 Inch Type-S Subwoofer (SWS-12D2/D4) | SK Customs Car Audio & Home Theater | Atlanta | Norcross | Duluth | John's Creek
Alpine 12" Single-Voice-Coil 4-Ohm Loaded Subwoofer Enclosure Black SWT-12S4 - Best Buy
Alpine R2-W12D4 Car Subwoofer 2250W Max 750W RMS 12" R-Series Dual 4-O – absoluteusa
Alpine SWE-1242 Type-E 12" 4-ohm subwoofer at Crutchfield
Alpine Jeep Wrangler Single 12-Inch Alpine Halo R-Series Preloaded Subwoofer Enclosure with ProLink R2-SB12V (Universal; Some Adaptation May Be Required) - Free Shipping
2) Alpine Type-R R2-W12D4 12" 750w RMS Car Subwoofers+Vented Sub Box Enclosure - Rockville Audio
Alpine Type-S SWS-12D4 12" 1500 Watt Dual 4-Ohm Car Audio Subwoofer Sub SWS12D4 | Audio Savings
Alpine W12S4 12-inch Single 4 Ohm Subwoofer - Creative Audio
Alpine W12S4, Bass Series Single 4 Ohm Voice Coil 12" Subwoofer - 750W – AVLeaderz