Originally Posted by Chirosamsung
This is why audio and home theatre is so confusing...
I essentially asked the same question in the REW thread and the NAD 758 thread (which includes DIRAC) and was told to do sub calibration (REW and MiniDSP stuff) BEFORE doing DIRAC
Welcome to the age of technology!
I find aspects of my smartphone and computer confusing at times--or really anything involving a microprocessor, where I don't fully understand the function and the rules which govern the operation. And, I never
fully understand everything (or sometimes, anything)!
Here is something you really need to understand at the outset, though. REW is just a system of measurement. It doesn't actually change anything. It just measures
your frequency response, so of course, you would want to do that first to give you a before-and-after picture of what's happening. Whether you try to use something like a miniDSP, or the PEQ controls in your subwoofer, before running Dirac or after running Dirac, depends on the specific problems you are trying to address. And, there is some trial-and-error involved in that with Audyssey, or Dirac, or whatever.
A simple way to think about it is: big problem--try to fix it before running room EQ; small problem--just make tweaks after running room EQ. But, even that isn't a hard-and-fast rule. That's why you keep hearing the advice to experiment to find out what actually works best. If you are looking for set-it and forget it techniques, there aren't many that don't require some
degree of effort. Just like operating a DVR, or a smartphone, or a computer, there is some learning curve involved.