100V TRANSFORMER: Pyle ceiling speakers feature 100 volt transformer, while an 8 ohm bypass setting allows use with regular home audio receivers and amps. The product is made to produce powerful, rich sound or quiet background music 85Hz - 20kHz FREQUENCY RESPONSE: Pyle 5.25” speaker system has a directable 1/2” high compliance dome tweeter and 85Hz to 20kHz frequency response. This flush mount speaker also has 8 ohm impedance rating 2-WAY MOUNT SPEAKER: The stereo sound subwoofer speaker has two way of installation: in-wall or in-ceiling flush mount. It has convenient speaker terminals that allow for quick and hassle-free speaker wire connection at any custom installations FLUSH MOUNT DESIGN: It has a flush mount design midbass speaker in white for simple and easy in-wall or in-ceiling installation. The product includes the cutout dimension at 6.42'' in diameter x 2.91'' in depth for home surround system 300 WATTS PEAK: The wall speaker system is carefully combined to reproduce sound clearly with outstanding responsiveness and 300 watts. It can achieve wide-ranged sound performance speakers secure as well as extending the life of the product