Bowers & Wilkins DB4S 10" Powered Subwoofer Open Box — Safe and Sound HQ
Bowers & Wilkins DB4S Subwoofer - BLACK (DB4SGLOSS BLACK -USED | eBay
Bowers and Wilkins DB4S 10" 1000W Powered Subwoofer in Gloss Black | NFM
Bowers & Wilkins - DB4S Gloss Black - Active closed-box subwoofer system. 1000W Class D Hypex amplifier, 1 x 10" Aerofoil cone drive units, Digital preamplifier with Dynamic EQ, App-based - Paulson's