Originally Posted by theblackangus
Everyone seems to agree dirac in some form is one of the best room correction systems to use. Its on my list of things to try over time.
Currently I have my AVR doing room correction on the system with a minidsp 2x4 doing the highpass on the 215RT's. I am then using the AVR to manage the sub from 80hz down.
Im going to fool around with having the AVR do room correction except for the 215's and do manual filters on the 2x4 for room correction.
I've tried the following room correction systems. Here are my impressions.
Velodyne DD - Just sub EQ. Big improvement over no EQ for subs.
Older Audyssey versions - meh, sometimes better than nothing, sometimes not
Audyssey XT32 - Good. Overall, the bass was definitely improved over no EQ and it helped remove some room coloration, but no ability to dial in the target curve. Not enough control.
Audyseey XT32 Pro - Similar to XT32, but allows you to disable "midbass compensation," which I found to be a small improvement. Target curve UI tuning is impractical to use, due to long iteration time and bugs (which force you to remeasure for every iteration). I was able to pick my favorite preset curve, though.
Dirac - Far superior to any of these, once you get it tuned. Better sounding room correction + great iteration process for dialing in the target curve. I felt it was a big improvement over the entire frequency range. It cleans up issues with the room and speakers, and lets you dial in exactly what you want (as long as it's within the capabilities of the speakers - not an issue with JTRs!) The only potential downside with Dirac is that it removes some ambiance, more like you're listening to headphones. I liked this, but that's a subjective thing.
That said, I'd still recommend trying the free Dirac demo before spending money. You just need a PC/laptop, calibrated mic, and a boom stand. The main downside of Dirac is that if you want to combine it with Atmos, there still aren't many great options. Perhaps 2xDDRC-88As or future Emotiva products. My setup is still non-Atmos, using Dirac Live + JRiver + a 7.2 Preamp via HDMI.
Based on what I've read from other users, the only room correction systems that have been in Dirac's league are Trinnov and Audiolense XO.