Polk Audio TL2 Speaker Center Channel (Each， Black)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> .75" Silk-dome Tweeters </span></li><li><span class="a-list-item"> 3.25" Composite Injection-molded Cones With Dynamic Balance Driver Technology </span></li><li><span class="a-list-item"> Power port </span></li><li><span class="a-list-item"> Time Lens Technology-The acoustic centers of the tweeter and mid-bass driver are located in the same plane for superior imaging </span></li><li><span class="a-list-item"> PowerPort a patented Polk technology， extends the low frequency mid-bass driver response as it decreases air turbulence， </span></li><li><span class="a-list-item"> 3/4" Silk Dome Tweeters for crisp， clear imaging and smooth response that's never tiring. </span></li><li><span class="a-list-item"> 3 1/4" Composite Injection Molded Cones With Dynamic Balance Driver Technology </span></li></ul><!--   Loading EDP related metadata  --><div aria-live="polite" class="a-row a-expander-container a-expander-inline-container"><div aria-expanded="false" class="a-expander-content a-expander-extend-content" style="display: none;"><ul class="a-unordered-list a-vertical a-spacing-none"><li><span class="a-list-item">Combination Keyhole Slot &amp; 1/4" x 20 Threaded Insert fits all aftermarket ceiling and wall brackets for ultimate flexibility.</span></li><li><span class="a-list-item">Eliminates "port noise" and bass output losses up to 3 dB.</span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31jzgVKT2qL.jpg" noproxy></div></div>