Bowers & Wilkins (B&W) BB-ISW 4 Dedicated Back Box for ISW-4 In-wall Subwoofer Brands_Q Acoustics Liniear volume control: Yes

Liniear volume control: Yes

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Bowers & Wilkins (B&W) BB-ISW 4 Dedicated Back Box for ISW-4 In-wall Subwoofer Brands_Q Acoustics Liniear volume control: YesIn high performance in wall bass systems, enclosure control defines the difference between loose low end and reference grade impact, and the Bowers & Wilkins BB ISW 4 Dedicated Back Box is engineered to deliver that structural precision for the ISW 4 In Wall Subwoofer in India. Designed as a sealed MDF acoustic chamber, it establishes a fixed internal volume that allows the ISW 4s dual 8 inch drivers to operate with greater damping accuracy, tighter