Bowers & Wilkins BD series subwoofers i.e. DB1D, mid-sized DB2D and compact DB3D - YouTube
UPDATED: B&W DB Series is its most powerful range of subwoofers yet | What Hi-Fi?
DB2D Subwoofer | Bowers & Wilkins
Bowers & Wilkins DB2D Subwoofer - Suncoast Audio
Bowers & Wilkins on Twitter: "Using the same 10-in drivers found in the flagship 800 D3 speakers, DB2D takes bass to another level #bowerswilkins # db2d https://t.co/DaNYXbWDFR" / Twitter