Alpine R2-W12D4 | 750W 12" Dual 4-Ohm Subwoofer with Enclosure
Alpine RS-W10D4 | 600W 12” Dual 4-Ohms Shallow Sub with Enclosure
Building a Ported Box for a 12" Alpine Type R - YouTube
Sealed / Recessed Sub Box for (2 12") Alpine Type R Subs - Subwoofer Enclosure | eBay
Universal Car Stereo Vented Enclosure Single 12" Alpine R2-W12D4 Type – absoluteusa
Subwoofer Box Alpine Type R SWR-1242D | Ported Box | Slot
Sealed / Recessed Sub Box Enclosure for 1 15" Alpine Type R SWR-15 Subwoofer | eBay
ALPINE SBR-S8-4 PORTED ENCLOSURE WITH ONE 8" TYPE-R SUBWOOFER | 702MOTORINGLASVEGAS
Sealed / Recessed Sub Box Enclosure for 1 15" Alpine Type R SWR-15 Subwoofer | eBay
Amazon.com: Alpine Type R Bundle Compatible with Universal Car R-W10D4 Single 10" Loaded Vented Port Sub Box Enclosure with S-A60M Amplifier and 4GA Amp Wiring Kit : Electronics
Sealed / Recessed Sub Box for 1 12" Alpine Type R swr Sub - Subwoofer Enclosure | eBay
Alpine 8" Type R Single Enclosure | P.C. Richard & Son
SBR-S8-4 - Alpine 8" Single Ported Enclosure Loaded with Type-R Subwoofer
Alpine SBR-S12D4 Type-R 12" Subwoofer Enclosure - Signature Car Sound
Alpine SBR-S8-4 Ported enclosure with one 8" Type-R subwoofer at Crutchfield
Alpine 8" Type R Single Enclosure | P.C. Richard & Son
Alpine 10” Type-R Thin Powered Sealed Bass Package Includes one Alpine SWR-T10 10” thin subwoofer, one R-A75M amplifier, and sealed enclosure