ALPINE R Series 8" Subwoofer Box ( Ported ) - SBR-S8D4.2 digital radio 83V/1m) 91dB

83V/1m) 91dB

stronger bass response

875 in / 657 mm External Height (H) 16 in / 406 mm External Depth (D) 17

Optimised for factory amplified audio systems

Product Type Midrange Speaker Driver Series Focal Utopia M Speaker Size 3

ALPINE R Series 8" Subwoofer Box ( Ported ) - SBR-S8D4.2 digital radio 83V/1m) 91dBAward winning SBR S8D4, named INCAR SUBWOOFER OF THE YEAR LOADED ENCLOSURE for 2017. The SBR S8D4 features Alpines Type R 8 subwoofer in a custom slot ported enclosure. Ideal for installation in small spaces, its compact size means it can fit virtually anywhere. The pre installed subwoofer employs many features typically found in larger models, such as Alpines H. A. M. R (High Amplitude Multi Roll) suspension. This unique design allows greater linear