I've been doing this for years. I have a Bryston 2.5 SST2 for the Aerial 5T's and an old 200 wpc Forte 6 using one channel for the Aerial CC-3 center. It's been powering the center for close to 10 years.
The simple solution would be to bridge the amp and reduce the center channel level 3-6db. Unfortunately that amp cannot be bridged. I would contact Bel Canto and ask if there is any issue just using one channel and if you should use a dummy load on the other.
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