I use a "Jack-of-all-trades" high-end Marantz AV8802 Pre-Processor for almost all my listening and home viewing. I have a much cheaper Marantz NR1510 in my motorhome, and my partner has gone slightly up with a Marantz NR1720. We deliberately do not use a centre speaker because our main speakers have very good imaging (KEF) and we want to avoid the multiple comb-filter effects of too many front drivers. As @elliottbnewcombjr says, switch the sound to Pure Direct if you have that option. You will have to recalibrate after removing the centre channel, but that is supported on all our Marantz units.
I use the same set-up for 2-channel analogue and CD playback, as well as multi-channel SACD and Pure Audio Blu-ray (including Dolby Atmos).

