Product details:

Geek Squad installation your local Best Buy store Handles up to 420W max power (60W RMS) For rich, powerful sound. 28Hz–36kHz frequency response Accurately reproduces a wide range of sound. Multilayer mica matrix woofer cone Produces robust, resonant bass. 4 ohms impedance Conducts power evenly to keep the speaker at an appropriate level. 2.75 mounting depth; 8.75 x 6 cutout diameter For simple installation.