Center speaker to match KEF 107/2s

I'm seeking suggestions for a center speaker to match a pair of KEF 107/2s. The speaker would sit below a projection screen. For surround and HT, LF is crossed at 80 Hz to subs. The 107/2s image well, so the speaker isn't needed for dialog intelligibility, but I suspect the center channel is not distributed to stereo with DSD. I discovered it isn't distributed with bitstream from a Blu-ray movie; I had to use LPCM to recover dialog. That may be particular to the Cary Cinema 11a processor I'm using to get surround DSD from a Sony XA5400ES which is available only via HDMI.

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