Product highlightsdual 5-1/4" mica-reinforced polypropylene Dynamic Balance® cone drivers 1" Terylene high-res dome tweeter handles up to 125 watts frequency response: 55-40,000 Hz sensitivity: 89 dB 8-ohm impedance Power Port® technology for enhanced bass response non-resonant MDF cabinet 5-way gold-plated binding posts anti-diffraction magnetic grilles for minimal sonic interference 20-1/16"W x 7-1/2"H x 10-5/8"D weight: 19 lbs. warranty: 5 years What's in the boxCenter-channel loudspeaker Grille (attached) 4 Self-adhesive rubber feet Owner's Manual Online Product Registration About this itemWritten by Crutchfield's Eric AngevineA full-range center channel speaker Use the Polk Audio Signature Elite ES30 for your home theater's center channel, and it will serve up crisp dialogue and dynamic sound effects. This speaker is a perfect match — both in terms of stylish looks and clean sound — to the rest of the speakers in the Signature Elite series. Built for smooth sound The ES30 is made with high-quality materials for natural, low-distortion sound. Housed within its cabinet is a 1" high-resolution Terylene dome tweeter for clear, detailed highs and realistic reproduction of vocals. Two highly efficient 5-1/4" Dynamic Balance® woofers are made of lightweight yet durable mica-reinforced polypropylene. The non-resonant MDF (Medium Density Fiberboard) cabinet and anti-diffraction grille help eliminate sound-muddying vibration and distortion. Polk's exclusive Power Port technology adds low-end impact. Got wire? Most speakers don't include any. Read our article about choosing and installing speaker wire. Shop our selection of speaker wire.