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Emlyn wrote: »

My best recommendation is to run room correction (Dirac is just one of a few available) two times with the cable connected and then disconnected and see how each sounds to you in your own room. You can also compare the setting results in the receiver for yourself to see if there are differences.

Dirac is intended to treat all of the speakers in a home theater system as one integrated system in terms of distance, timing and phase correction within a listening room. It's intended to address room interactions with the output of all of the speakers when they're used together. Given that, it doesn't make sense to me to disconnect the SDA drivers and then run the Dirac setup since the system's balance will be thrown off when connecting the SDA drivers to use the speakers in a cohesive system.

A Dirac setup procedure uses multiple microphone placements to analyze the acoustic properties within the room and how each speaker interacts in the room and with the other speakers. SDA crosstalk cancellation works optimally within only a narrow range. Although not exactly the same, it would be somewhat analogous to having a 9 speaker home theater system and running Dirac with only 7 of them working by disconnecting the SDA cable during setup.

When listening to two channel, which I assume is what the SDA speakers are mainly there for, Dirac may be taken out of the equation entirely by switching to a "pure direct" mode.

What SDA model is to be used?