Last week I bought an Onkyo HT-S650 Home Theater in the Box. The unit has large front speakers with dual 5 1/4" woofers and 1" tweeter and a center speaker with dual 4" woofers and 1" tweeter. The satellites have one 4" woofer and a 1" tweeter. The system overall sounds pretty nice and tight. However, when listening to DVDs with DTS or DD, the center does not sound similar to the front left and right being significantly lower in high frequency. Guessing a bad speaker, I went to the Circuit City where I bought the original unit and exchanged the center to find no change in tonality. Is this correct? In some scenes in the Fifth Element (I think) when sound was present during panning, the difference in the center made the situation very annoying. Is it possible that the receiver is bad (bad decoder)? A bad amplifier? Please help I want to know if this is there by design. If it is, I will promptly return the system back. Otherwise, in stereo mode or even with the Center speaker disabled it sounds pretty good.