Does anyone know of measurements of the KEF Q250c, Q650c, and R2C? I have just over 7" under my TV, and the 250 and R2C should fit. But I am wondering about the tradeoffs. My main priority is dialog clarity. We sit about 14' from the speakers in a very open room, but we don't listen to anything close to reference levels. I have 2 KEF Q300 for left and right, but was thinking I might just replace them with center channels (i.e., 3 center channel speakers for LCR). Will be crossing over to a sub. Thanks in advance.