The TL1 center channel speaker works well as a rear center. The Blackstone aerated polypropylene cone is lightweight, but stiff and strong, with longer linear excursion capabilities in limited compact enclosure space, so it plays louder with less distortion. A super-small long-throw mid-bass driver, tuned with our patented Dynamic Balance® technology, delivers astonishingly smooth, flat frequency response, superior transparency and detail, and the surprising ability to play really, really loud for such a small speaker.