B&W (Bowers & Wilkins) DB4S Subwoofer - Latest Model - Bluetooth
B&W DB4S 10" Powered Subwoofer; DB-4S; Piano Black; Bluetooth | Reverb
What's the potential cause for this noise on my B&W DB4S Subwoofer? This only occurs when bass notes hit low frequencies. Despite this odd noise, the bass still thunders and shakes my
Bowers & Wilkins DB4S (Gloss Black) Powered subwoofer at Crutchfield
DB4S Subwoofer - Pearl Audio Video
What's wrong with my Bowers & Wilkins DB4S subwoofer? : r/hometheater