Alpine Type-X SWX-1242D 12" subwoofer with dual 4-ohm voice coils at Crutchfield
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
Alpine Type R 12 Inch 2250 Watt Max 4 Ohm Round Car Audio Subwoofer | R-W12D4 - Walmart.com
Alpine R-Series RS-W12D2 12" Shallow Mount Subwoofer with Dual 2-Ohm Voice Coils
Alpine Type-R SWR-12D4 12" 3000 Watt Dual 4-Ohm Car Audio Subwoofer Sub SWR12D4 | Audio Savings
Alpine SWR-1522D Type-R 15" subwoofer with dual 2-ohm voice coils at Crutchfield
Alpine SWR-1242D Type-R 12" subwoofer with dual 4-ohm voice coils at Crutchfield
Car subwoofer 12 "30 cm ALPINE X-W12D4 sound electronics columns 84.3dB subwoofers for cars acoustics auto audio parts components speaker _ - AliExpress Mobile
Alpine - SWR-T12 Type-R Subwoofers
Alpine R-Series R2-W12D2 12 Inch Dual 2-Ohm Voice Coils Subwoofer with 750W RMS
2 Alpine Type X 12 JL 1000/1 Silly Slappin!!!! - YouTube
Alpine 12” Type X-Series Ported Bass Package Includes one Alpine X-W12D4 12” subwoofer, and 2.00 ft³ optimized ported enclosure