Originally Posted by dmusoke
There are two time-alignments to think about if you have dual subs. 1) Combo Subs-to-Mains and 2) Sub1- to-Sub2
Yes, I know. The AVR is aligning the sub with the speakers every time I run YPAO (or Audyssey, or MCACC).
The former is done by setting the subs distance in your AVR setup menu and the latter is done by specialized equipment, like SubEQ from Aydyssey or the AS-EQ1 from SVS. The Sub1-to-Sub2 alignment is what I was referring to in my earlier procedure.
I knew what you were talking about. If I do one sub with YPAO, it will set the distance so that it is aligned with the speakers. To run two subs, I need them to be set so that the same signal from the AVR will result in them both being in phase with each other and with the speakers.
So my thought was to set one sub and note the distance. Then disconnect that sub, and work with the second sub. Initially, it may have a different distance setting, but by adjusting the phase on the sub I should be able to dial it in so that the AVR sets it to the same distance as the first sub. They would then be in phase with the speakers, and they would also be in phase with each other using the same sub out signal from the AVR, by virtue of having the same time delay to the MLP.
I believe the procedure you suggested will mess things up unnecessarily. Simply follow the procedure I suggested earlier to make the two subs play as a single subwoofer and then use YPAO and the miniDSP toEQ the combo sub response and integrate them with your mains.
Please explain how it will mess things up. I have no problem with your procedure--I was merely thinking of alternatives, and if the one I'm outlining is flawed, I'd like to understand how.
Basically, I'm just using YPAO to find the phase adjustment setting required to get the subs in phase with one another. Once that is done, YPAO can be used to set the volume when both are run together, then the miniDSP and REW can be used to EQ the subs.