Polk TSx150c 3-way High Performance Center Channel Loudspeaker Heavy duty, detailed center channel performance from a beautifully compact loudspeaker with a reversible enclosure for easy placement in any system. Rear-firing flared bass port minimizes port noise ("chuffing") and smoothly blends low frequency response with the speaker’s overall dynamics, for the kind of wide dynamics you want in a center channel speaker. Stiff and durable Dynamic Balance composite driver cones deliver smooth, natural sound. Silk/polymer dome tweeters anchor the action with clear and detailed highs, even at high volumes. The high efficiency design of the TSx Series works well with practically any electronics. TSx loudspeakers are timbre-matched within their series for seamless speaker-to-speaker blending. Rear-firing tuned port smooths low frequency blending, for surprisingly full-bodied deep bass. Aimable High performance center channel speaker features a 5/8 inch-thick baffle. Technical Specifications 1 - 1” (2.54 cm) silk/polymer Dynamic Balance dome tweeter2 - 5 1/4” (13.34cm) Dynamic Balance bi-laminate cone mid-wooferTotal Frequency Response - 53Hz-25kHzUpper -3dB limit - 24 kHzLower -3dB limit - 63 HzNominal Impedance - 8 OhmsEfficiency - 91 dBRecommended Amplifier Power - 25-125 Watts per channelGold-plated 5-way binding postsDimensions - 7” (17.78cm) H X 20” (50.80cm) W X 8” (20.32cm) D