Alpine SWR-12D4 Type-R 12 Subwoofer with Dual 4-ohm Voice Coils

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Alpine SWR-12D4 Type-R 12 Subwoofer with Dual 4-ohm Voice Coils

SWR-12D4 - Alpine 12 Dual 4-Ohm Type-R Series Subwoofer
Top-mount depth 6-38
Sealed box volume 075-100 cu ft
Ported box volume 125-150 cu ft