Differences in Dirac flavors

Asere

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I have the Pioneer lx805. I have placed different measurements on the avr slots. Standard Dirac, DLBM, DLBC. I can clearly hear a difference especially with the subs between Standard Dirac and the other two but how come BM and BC sound the same? Am I wrong using a slot for BM when I have BC? I thought there could be a comparison/audible difference.
 

Sonnie Parker

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I don't know how much difference it makes with only two subwoofers, but if you had more subs, I believe Bass Control would do a better job than BM.
 
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