Alpine R-Series R2-S653 6.5" 3-Way Pro Hi-Res Component Car Audio Spea – Car Toys
Alpine S-W12D4 | 600W RMS 12" Type-S Series Dual 4 Ohm Car Subwoofer
Alpine 12 Inch Bass Line Subwoofer (W12S4) | SK Customs Car Audio & Home Theater | Atlanta | Norcross | Duluth | John's Creek
Alpine Type S SWS-12D4 12 Inch 1500 Watt Max 4 Ohm Round Car Audio Subwoofer
Alpine R-SB10V Halo Series 10" linkable ported subwoofer enclosure at Crutchfield
Alpine W12S4 | 750 Watt 12" Single 4-ohm Car Subwoofer
Alpine BassLine Series 12 Inch 750 Watt 4-Ohm Car Audio Subwoofer | W12S4 - Walmart.com
Alpine RS-W10D4 | Pacific Stereo
Brand new alpine subs sound extremely quiet. The amp is very small but was powering similar watts subs much louder at the same output level. I'm breaking them in but I feel
Alpine R-Series R2-S65C 6.5" 2-Way 300W HiRes Component Car Audio Spea – Car Toys
Alpine R-Series R2-W10D2 10" DVC Car Audio Subwoofer, 2 Ohm, 750 Watts – Car Toys
Best Buy: Alpine X-Series 12" Dual-Voice-Coil 4-Ohm Subwoofer Black X-W12D4