I have always believed that dual center channels are a major sin when setting up a home theater, due to the obvious combing effect created by the output of each speaker arriving at different times. It's a highly technical achievement to "Design" a speaker to be time coherent , let alone set up two seperate speakers on one channel expecting clean arrivals. Recently I have noticed talk in various forums and articles professing two center channels as an improvement . I am open to new ideas and advancements , being in this avocation long enough to realize that nothing is carved in stone . I would welcome any comments !!