Originally Posted by George Mills
Try just lowering center a few DB in the Trifield preset. It has a similar effect as a working width.
I do not think that is really the same. The width control determines the amount of 'surround signal' (out-of-phase signal, L-R from the original signal) is mixed into the left and right speaker signal. Lowering the volume of the center speaker changes the amount of 'main signal' (in-phase signal, L+R of the input signal) in the center. Although the total signal balance is similar, the signal balance between the speakers is quite different.