I'm sure someone has said this before but since it didn't dawn on me until now I figured there might be at least one other person who hasn't figured it out.
The center channel speaker in a surround sound home theater system is optimized for human voice riange. There are hundreds to choose from ranging in price from $20 to $2,000. They look incredible and come in all sizes and some are even designed to be flush mounted into the wall. The common configuration is two midrange drivers with a tweeter in the middle.
links...
http://www.amazon.com/s?ie=UTF8&rh=n%3A172563%2Ck%3ACenter%20Channel%20Speaker&page=1http://shop.ebay.com/i.html?_from=R40&_trksid=p5197.m570.l1313&_nkw=center+channel+speaker&_sacat=See-All-Categorieshttp://www.crutchfield.com/S-KA3Em1ONrRC/g_12100/Center-Channel-Speakers.html