Bowers & Wilkins BB 6W Back Box For In-Wall Speakers (Each) Cin/Opti-0.75m A precision acoustic filter eliminates

A precision acoustic filter eliminates unwanted resonance and distortion

7˝ x 10˝ passive radiator in the center

a planar magnetic headphone like none before it

When connecting sensitive equipment to your home's power outlet

Bowers & Wilkins BB 6W Back Box For In-Wall Speakers (Each) Cin/Opti-0.75m A precision acoustic filter eliminatesThe Bowers & Wilkins BB6W back box increases sound insulation to adjoining rooms and provide the fire safety barrier often required by building regulations. When used in solid construction, the backbox will define an appropriate working volume for the speaker which may need to extend beyond the boundaries of the wall frame.