Introducing the JBL B-Series in-ceiling loudspeakers. Designed with paintable grilles to blend into your décor and crafted for wide sound dispersion, the JBL B-Series loudspeakers feature a modern, virtually invisible design, powerful JBL Signature sound and are easy to install. Built to last with quality materials including a moisture-resistant design, which are perfect for bathroom installations, the JBL B-Series loudspeakers also deliver high power handling and sensitivity for full sound.PRODUCT FEATURES:- Nominal Impedance: 4 ohm - Power (RMS/Peak): 45/160W - Frequency Response: 45Hz – 20kHz - Loudspeaker Sensitivity: 91dB - Woofer: 8" (203mm) Poly woofer - Tweeter: 0.5" (13mm) Polymer Tweeter - Cutout Dimensions: 11.7” x 8.8” (299mm x 223mm) - Grille Finished Dimensions: 10” x 12.9” (255mm x 329mm) - Mounting Depth: 3.7" (96mm)