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(φ225mm) Free Air Operation Yes
Its premium materials and superior build make it the preferred choice for those who demand nothing but the best from their car audio systems
X-Max (1-Way): 15mm
625 in (16 mm) as this may compromise the rigidity of the enclosure
Dynamic Peak Power (D
ALPINE R Series 8" Subwoofer Box ( Ported ) - SBR-S8D4.2 Processor Combo Pack (φ225mm) Free Air Operation YesAward 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
