Quote Originally Posted by jpmazare View Post
Hello,

I would like to know using Dirac graphs. Could I pre-eq my subs and run Dirac again to improve the responses that I am getting.
Can you? Yes. Should you? Probably.

My understanding, limited as it may be, is that one will typically get a better result if one first uses programs like REW to find optimum placement for subs and get the best (flattest) frequency response one can before running a program like Audyssey or Dirac. This includes treating the room (bass traps), etc.

Said another way, it's best to limit the amount of EQ that a program like Dirac or Audyssey has to perform.

As a not very closely related example, I recently raised my surround speakers about 25cm. The reason was the high backed couch that is the main listening position, and to get my Sierra-1's woofers up so that they were line-of-site with my ears. Sounds goofy, I know. Most people will say to only worry about the tweeters, which were fine already.

But what I was hearing was fairly strained. Tight, thin, whatever. Just didn't sound right. And when I raised the surround speakers up that 25cm or so, and then reran Audyssey, things got a lot better. Everything smoothed out, filled out, and that feeling of strain went away.

My hypothesis for why is simply that Audyssey wasn't having to work so hard on those surrounds. After raising them up, they were giving my ears flatter frequency response to start with, so Audyssey was just doing touch up instead of major overhaul.