So, I did a thing.....
I decided to adjust delay on one of my subs (dual PSA TV42s) to try to get the flattest FR I could pre-Audyssey (per the OP's video). Previously, I had always relied on the Impulse Response graph to time align.
Here is my raw response (no EQ, no Audyssey, no delay). This response requires 4 PEQ filters in the MiniDSP pre-Audyssey:
Then I started over and adjusted delay on one of the subs to come up with this FR. This response only needed a single PEQ fillter:
And, post Audyssey/MiniDSP using the delay:
A comparison of both methodologies post Audyssey/MiniDSP:
And here is the Impulse Response with the same delay on one of the subs. It is absolutely atrocious!!
While looking at the Impulse Response makes my OCD kick in BIG TIME, there is no denying that my Tactile Response has increased at least three-fold. The TR is just ridiculous now!
As you can see, the final frequency responses are not that
different...in fact, the one using the delay is a bit lower overall, but it feels waaaaay more powerful
. I would say that both responses sound essentially the same, at least to my ears.
I have read of folks purposely running ported subs out of phase to increase TR and I fooled around a bit with it when I had sealed subs and a small, ported MBM. So far, I don't see a downside...well, except for that Impulse Response graph that I can't un-see, and
the various new rattles I now have to chase down in my room. [IMG class=inlineimg]/forum/images/smilies/biggrin.gif[/IMG]
One last thing, I am not getting positive summation AT ALL using this method. Here's a comparison of both methods pre-Audyssey/MiniDSP: