Originally Posted by chucks0
Since you have a preference for down firing subwoofers with the kids, I think the PSA V1510DF would be a good option. I would recommend the ported over the sealed since you are in a rather large space. You will definitely "feel" the bass a lot more with the crossover set higher and a dedicated subwoofer handling more of the low end. The Chane speakers punch well above their size, but they are still 5.25" drivers and simply can't match what a 15" subwoofer can do. I have Chane A2.4 and a pair of PSA V1500 with a 80hz crossover in a 5000 cu/ft room and have plenty of chest slam, especially with one of the subs directly behind the MLP.
Yeah, the LFM outlaw sub is great, but undersized for that room. I too think the PSA V1500 (preferably a pair) would be a better option for a down firing sub. Lots more great options if down firing isn't a priority.
Though the Chane XBL2 midwoofer essentially behaves as a std 6.5" woofer in terms of volume displacement, triple 6.5" drivers pale in vD compared to even a single 15".
Also, if there is a region where the subwoofer output is overlapped with the mains (and there always is) phase immediately becomes an issue. If Audyssey didn't calculate correctly, this could permit phase cancellation between the mains and subs.
So, trying just the mains, running full range with no sub, for a few songs could help to answer that question as well.
Other excellent advice about room dimensions and crossover points should be observed as well.
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