Front Surround Technology Enjoy 5.1-channel surround sound with speakers placed only in front -- no rear speakers. Conventional front surround technologies just use front L/R speakers for the 5 channels, but the systems featuring Front Surround Technology use a center speaker that exclusively delivers the center-channel and virtual L/R surround sound. As a result, dialog sounds far clearer, and the surround sound is spread over a wider area. Using the center speaker also permits front-channel sound to be higher-quality, because it is delivered separately, with no interference from other channels.