See my review of the Trinaural processor. Still the best I have heard.
I have run a center channel for about 40 years for reason of room layout (like you). Much of that time I used a center channel derived in the same way as the rear channels in the old Dyna quad setup (bridged across the stereo amp). Except that I inverted the signal for one channel (easy to do with a phono cartridge) so that the bridged signal was L+R (L-(-R)) as desired for center. This produced excellent results and was inexpensive because no extra equipment, not even an amplifier, was necessary. Of course the stereo channel with the inverted signal had to have its speaker wiring inverted to compensate.
Most stereo power amps deliver more power when one channel is inverted. I never had any problem with the low impedance load due to the bridged speaker.
I have run a center channel for about 40 years for reason of room layout (like you). Much of that time I used a center channel derived in the same way as the rear channels in the old Dyna quad setup (bridged across the stereo amp). Except that I inverted the signal for one channel (easy to do with a phono cartridge) so that the bridged signal was L+R (L-(-R)) as desired for center. This produced excellent results and was inexpensive because no extra equipment, not even an amplifier, was necessary. Of course the stereo channel with the inverted signal had to have its speaker wiring inverted to compensate.
Most stereo power amps deliver more power when one channel is inverted. I never had any problem with the low impedance load due to the bridged speaker.