Originally Posted by Thxtheater
The way ARC does it's sub correction is correct and the preferred way. You ideally should treat all subs as one and apply an EQ that way. While it may seem inuitive to EQ them all individually, anthem is correct in their approach. You can certainly argue that there is still manual setting of distance and phase but it's pretty straightforward to do that.
Audyssey also treats the subs as one. But first it eq's the subs to each other, then matches them together, treating them as one, to the other speakers (and the room).
The sub matching that XT32 --and the SVS AS-EQ1 and the DSPeaker units, and others-- just saves the time needed to phase match the subs yourself.
I spent hours matching my subs using QM, and was able to get it pretty good.
I used the SVS AS-EQ1 and it took minutes and did a better job. I sold the SVS unit when I bought the Integra since XT32 had the same sub eq included.
Since I went back to Anthem I have been using the DSPeaker Anti-mode 2.0 Dual Core. It matches my subs to each other better and faster than I can do. I then use ARC.
I stand by my statement that ARC would be improved if it were able to do dual sub equalization on top of everything else it does now. Hopefully they will include that feature on their future units.