Really? Why? Is your center speaker identical to the fronts? Is it on the same plane or is it higher or lower? What is it on or around? "Dropping it 4dB..." is why the ability to trim levels is provided- is it not? The Rotel unit is not the Outlaw unit. I still think you have to perform calibrations on both units when installed in the system. What is right (settings) for one won't necessarily be right for the other. I believe you have proved this to be so.