Bowers & Wilkins DB2D Series Subwoofer

See nothing, hear everything
CCM8.5 D is a two-way in-ceiling loudspeaker which offers high-quality
acoustics in an incredibly discreet package.
It features a decoupled Diamond dome tweeter and a single 7inch
bass/midrange Continuum driver with anti-resonance plug. All the drive
units are located in a rotatable mini-baffe which allows the user to ‘toe
in’ the drive units of the loudspeaker for the best performance.
For optimum discretion when installed, the Continuum cone is given
a dark fnish.