I understand how your processors and you SOLVE the lack of a center channel speaker.
IF possible, try a small center channel rather than skipping it, that is my advice to anyone following.
After so many years of prioritizing and enjoying excellent 2 channel imaging in my dedicated listening system, and many years of improving TV sound, (starting with old CRTs I hot wired decent speakers to, the fidelity was always there), I am very sensitive to sound that is erroneously off-center of a visual image, especially dialog meant to be centered, or off-center dialog not originating from the correct location.
A common issue is a TV above a fireplace, no center speaker. My wife and sister-in-law house/pet sit for many wealthy people, and I check out the home theaters of many of them. I shake my head at the poor sound so many have.
My Small 5.1 Home Theater

I am left handed and sit on the left end of the sofa (some but not far off center), near my end table, coffee warmer, coaster, kleenex, box of remotes, left side wall ....
Donna, right handed, is at the right end, her coffee warmer ... no right wall. No one normally sits, or needs to sit dead center in my setup due to two factors

1. DBX Soundfield 100 Cross Pattern Dispersion is designed to create a WIDE phantom center image of any 2 channel material (I often 'force' 2 channel),

Toe-In Alternates
and
2. using a Center Channel Speaker (even a small one) physically anchors the center to the center of the image no matter where you sit, because if you rely on Phantom Center, and you sit off-center, it is not going to work as well as sound ORIGINATING from the center. Off-center dialog will have some Phantom Off-Center mix by the originators, which assumes a center speaker,
I am happier with the smaller Jamo, the Klipsch was just too efficient, even after software adjustments

In my office, 2 channel, all center Phantom, I re-configured everything so I could sit dead center for the 1st time ever.
