Polk Audio TSX150C BLACK 3-Way High Performance Center Channel Speaker Part Number: AM6155-A Type: Center Channel Speaker Speakers Configuration: Single Speaker Driver Units: Tweeter Diameter: 1 (2.54cm) Type: Silk/polymer Dynamic Balance Dome Mid / Woofer x 2 Diameter: 5 1/4 (13.34cm) Type: Dynamic Balance bi-laminate Cones Power Rating: 20-125 watts per channel Frequency Response: Total Frequency Response: 53Hz-25kHz Upper -3dB Limit: 24 kHz Lower -3dB Limit: 63 Hz Nominal Impedance: 8 Ohms Sensitivity: 91 dB