Leviton SGI65-W 6.5-Inch Two-Way In-Wall Loudspeaker, White 6.5-inch Two-Way In-Wall Loudspeaker Provides the perfect linear movement needed to reproduce dynamic, tight bass and incisive midrange frequencies Combines very low mass and high tensile strength to provide crystal-clear treble response .5-inch AeroNylon dome high-frequency transducer Frequency Response: 50-20kHz +/- 3dB