Two passive ceiling speakers feature an 8-inch woofer and 1-inch tweeter with bass down to 43 Hz and 150W peak power. An external amplifier is required (not included) and links multiple speakers for whole-home sound. A mounting hole template and grille hook are included for easy installation. | Vevor | | In Ceiling Speakers, 8", In-Ceiling & In-Wall Speaker System, Hi-Fi Sound, 150W Peak, 2-Way Flush Mount Speakers | White;Black | Best Buy