Alpine - R2-W8D4 Next-Generation 8-inch (20cm) R-Series Subwoofer with Dual 4-Ohm Voice Coils
Alpine SWR-1242D Type-R 12" subwoofer with dual 4-ohm voice coils at Crutchfield
R-101SW 10" Subwoofer | Klipsch
Alpine R-W12D2 R-Series 12" subwoofer with dual 2-ohm voice coils at Crutchfield
Velodyne DLS-R Subwoofers | Audioholics
Audio System R-10 Radion BR 25cm Subwoofer Bassreflex | Audio-World
Alpine - R2-W12D4 Next-Generation 12-inch (30cm) R-Series Subwoofer with Dual 4-Ohm Voice Coils
Amazon.com: Alpine ALP19-R-W12D4 Car Audio Type R Series Sub Dual 4 Ohm 1500W Peak 12" Subwoofer : Electronics
Klipsch Reference Series 12" 400W Powered Subwoofer black 1070408 R-121-SW II - Best Buy
SWR-12D4 - Alpine 12" Dual 4-Ohm Type-R Series Subwoofer
R Series | KEF USA
R Series | KEF USA
Klipsch Reference Series 12" 400W Powered Subwoofer Black R-120SW - Best Buy
Amazon.com: Alpine ALP19-R-W12D4 Car Audio Type R Series Sub Dual 4 Ohm 1500W Peak 12" Subwoofer : Electronics
Alpine R-Series dual voice coil subwoofers | Crutchfield - YouTube
Klipsch Reference Series R-100SW 10" 300W Subwoofer 1065957 B&H
2) Alpine Type-R R2-W12D2 12" 750w Subwoofers+Vented Box+Mono Amplifier+Amp Kit - Rockville Audio
Amazon.com: Alpine R-Series R2-W12D4 12 Inch Dual 4-Ohm Voice Coils Subwoofer with 750W RMS : Electronics
Amazon.com: Alpine R-Series R2-W12D4 12 Inch Dual 4-Ohm Voice Coils Subwoofer with 750W RMS : Electronics
Alpine SWR-T12 Type-R Thin 12" 4-ohm shallow-mount subwoofer at Crutchfield
Alpine R2-W12D4 12" R-Series "R2" Subwoofer, Dual 4-Ohm, 750 Watt RMS - Creative Audio
Amazon.com: Alpine R-W10D4, R Series Dual 4 Ohm Voice Coil 2250 Watts Subwoofer, 10" : Electronics
