If you plan to install a home theater system, give it a professional finish with this Niles Audio CM850Si Stereo Input In-Ceiling / In-Wall speaker. The speaker has a dual voice coil design which provides left and right channel stereo sound form a single speaker. The 8-inch injection-molded TCC (Talc, Carbon, and Ceramic-filled) woofer is rigid to reduce breakup, lower distortion and provide enhanced bass response. The butyl rubber surround increases sensitivity while preserving strength of sound. The dual 1″ pivoting fluid-cooled Teteron tweeters provide wide dispersion for clear and detailed high frequency sounds from both the left and right channels at opposing angles to preserve stereo separation. Constructed of high-impact ABS, this speaker is extremely durable, featuring weather resistant material and a UV (ultraviolet) additive to resist the “yellowing” that can occur over time when exposed to sunlight – which reduces installation limitations and provides unique solutions in moist environments or outdoors under eaves. Included is a paintable flush-mount aluminum grille that is acoustically transparent and lets sound pass through for a clean, discrete installation.