The 8" 2-Way In-Wall Speakers allows the woofer to resonate and produce the better base. Use the natural speaker cabinets found through the home in the interior spaces between the studs for installation. These speakers have a captive clamp-ring mounting bracket that is pre-mounted to the speaker for quick and easy installation. The pre-mounted bracket provides uniform pressure to the speaker unit, minimizing racking (twisting) of the speaker frame which may cause speaker failure. The stereo speaker pairs come complete with grills, screws, hole cut-out templates and paint masks. They feature 8" long carbon fiber poly cone woofers, 10 ounce magnets and 1" soft dome pivoting tweeters. These speakers have built-in overload protection, IR knock-out, an impedance of 8 Ohms, and a frequency response of 35 hertz-20,000 hertz.