I wonder if this is relates to the sound quality issues I've noticed with Dolby Pro Logic II:Movie?

As I mentioned on the other thread, I was able to tame this somewhat by switching my sub crossovers in.
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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