Originally Posted by Stoked21
I guess what I'm really saying is there's a 6.5' delay difference between 88A1 and 88A2 according to Audy distance settings. At 1130fps, that implies that the two 88A have about a 6ms delay difference between them. If my math is correct.
Thanks for sharing your experience. I have some questions.
Based on the "Dirac" tab in the 88BM, we can now see the trims and delays that Dirac has set. And if you select a Config on the 88BM that has no Dirac project associated with it, the 88BM shows Dirac trims and delays to be zero (as expected).
So my question is: when you say you run Audyssey "prior to BM install start", what state is the 88BM in? Is Dirac on, or in bypass? Is the active memory slot one with a project loaded, or an empty memory slot? Or (better yet), did you restore the 88BM to factory defaults just to ensure a clean slate before running Audyssey?
And why would you leave Audyssey trims active (even though they may all be close to the same)?
Not understanding your math in the quote above. Where did you come up with 6.5'? As I understand it, the only way to tell whether there is a timing issue between two 88BM's would be to:
- Run Audyssey.
- Observe the delay for a particular speaker, say the center channel, when it is connected to 88BM no 1.
- Temporarily move the center channel to 88BM no 2.
- Re-run Audyssey.
- Observe the delay for the center channel and compare it to the delay calculated in the first run.
- Any difference will be the timing difference between the two pieces of hardware, which I would expect to be much smaller than 6ms.
And after everything was done, did you attempt to verify that speakers on one 88BM are indeed time-aligned to speakers on the other 88BM, using REW's impulse response measurements?
Sorry for all the questions, but this whole time-alignment issue is not as straight-forward as one might think.