B & W CWM8.3D CWM Series 3 Way In Wall Loudspeaker

B & W  CWM Series 3-way in-wall loudspeaker; 1x1" Diamond Dome, Nautilus™ tube-loaded tweeter; 1x5" Continuum midrange driver; 2x7" Aerofoil Bass drivers; Freq Res - 30Hz - 35kHz (-6dB); Sensitivity - 89dB; impedance - 8Ω; Power - 200W; Back Box - BB CWM8.3; Cutout (HxWxD) - 34" x 9.4" x 3.9"; Frame (HxW) - 34.6" x 10"; 10.9kg.