I think it’s important to keep the focus on the Onkyo AVR not Dirac. There were interoperability issues with the Dirac builds and the Onkyo during the review period that required manual editing of the Dirac preference files just to get it to connect with the unit. NAD, ARCAM and other users have been stuck on older builds for month on end. As Gene alluded, both he and I have both run into a technical limitation with Dirac where it is setting an undefeatable HPF at 20Hz on mains that are capable of LFE and/or bass performance below 20Hz. This produces several problems in our setups including nulls at 18Hz (and other anomalies from 25Hz and below) that are caused by the HPF implementation. In a nutshell, no one is knocking Dirac. On the contrary, Dirac is great and Dirac ART (which I’ve been testing for months) has delivered some of the best bass performance in my theater with my unlocked Focal Astral 16 (Storm Audio). There are known limitations with the current Dirac implementation when you are trying to run ANY speaker capable of true full range down to and below 20Hz. This is a confirmed issue from Dirac and they are working on addressing this in a future build. On to the Onkyo!
