I'm running without a center channel because my mains produce a very strong phantom center. Is it possible that having center=off with the 990 is affecting the mode detection/switching behavior?
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Outlaw 990/7500
Cambridge Azur 840C
Oppo DV-981HD
Fronts: Ohm SFRS-11.200S3
Surrounds: Ohm Micro-Walsh short omni
Subs: Hsu ULS-15
Motorola/Comcast DCT6412 III
Panasonic PT-50DL54