The H520C ceiling speakers are a perfect fit for whole house audio. They feature a 5-1/4 glass fiber woofer with rubber surround for solid midrange and deep bass and a pivoting dome tweeter with a 2nd order crossover to reproduce clear highs. The unique bridge mounted tweeter was designed to maximize off-axis performance for added mounting flexibility. Paintable grills allow these speakers to disappear into the background. Sold in pairs. Specifications: *Power handling: 50 watts RMS/100 watts max *Impedance: 8 ohms *Frequency response: 60-20,000 Hz *Sensitivity: 85 dB 1W/1m *Mounting depth: 3-1/2. *Cutout Size: 7-11/16 dia.