From someone who has never had anything even like Audyssey, I can understand what Trinnov is claiming to be able to do for a full 5.1 or 7.1 system with a 5.1 or 7.1 program. But does Trinnov have any effect (positive or otherwise) on a normal stereo program? Does it have to run all speakers to work? Can it do room compensation say if you just play a CD with only your front L&R and sub running? It might be nice to be able to flatten bass response in 2.1.
Trinnov basically does two things. One is "spectral" (EQ) correction, and the other is "spatial" correction. The spatial correction feature (which really represents the true innovation of Trinnov over Audssey) does indeed only work with 5.1 or 7.1 channels operating. The Trinnov feature in the R972 does both spectral and spatial correction together in a highly integrated way. This receiver truly is optimized for use with 5.1 or 7.1 channels- not for stereo (2 channels).
I DO NOT KNOW if the R972 will do automatic spectral/EQ correction independent of Trinnov- something that would be required for 2.0 or 2.1 channel operation.
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