PaulyT said:Tom, I've got an XS30 question for you. I'm here at Zing's house, and he's got his dual XS30's set up symmetrically next to his speakers (that is, equidistant from walls and the listening position), with the boxes angled so the front drivers face the listening position directly. But he's got one XS30 turned around, such that both amp plates are on the outside facing the walls. My question is, are the two drivers in one box working in phase with each other, or 180deg out of phase e.g. one cone is moving out and the other is moving in? If the latter, wouldn't there be some cancellation with the two placed symmetrically but now with the front-facing woofers out of phase left-vs-right?
Though, I suppose we could (and we will) do the experiment of setting the phase one one sub to 180 (with the other at zero), that would effectively do the same as turning the box around 180 degrees... Again, assuming the dual drivers are out of phase.
Is this making any sense? Hopefully you can figure out from my description what I'm trying to get at.
The drivers are in phase. That is, when driver #1 is moving outward from the enclosure....driver #2 does the same.
And as Flint noted, the phase control on the subwoofer is centered around 80hz. This is more for aligning the sub(s) with the mains. If the AVR has a distance setting, that will time delay the entire bass signal.
Tom V.
Power Sound Audio