Originally Posted by Jim Cutter
I'm sure that 2 XV15's will be enough to rock the room just fine. Tom from PSA actually said I should get pretty decent response from where I'm putting the subs. I don't have my center sub in the picture yet either.
In theory, absolutely two is more than enough. Now the rub, where the rubber meets the road, you have a very large listening area (many listening positions) and what one hears on one end of the row of chairs, has nothing to do with what the listener, two seats over hears.
My wife sits, four feet to my right as I face the big screen (does a 60" qualify as a big screen these days) and measurements taken at her listening position exceed my position by 6dB and sometimes more. Like it or not, the sound level where she sits is almost twice as loud as where I sit. We've agreed to change seating position for viewing action based movies with "loud" sound tracks.
Two subwoofers at the front of your room, "IS NOT" going give you even response to "ALL" listening positions. You're spending a boatload on your Home Theater. I'd like everybody to have a good experience and I see you setting the acoustics of your room up for fail. Just saying.....for the purpose of smooth response, your room "NEEDS" four subwoofers and if you don't want to put four subwoofers in your room, then you'll need room treatments in which to smooth out the measurements; obtain a +/- 3dB measurement at all listening positions.
We currently have three subwoofers and due to the interaction of our room's acoustics with what the subwoofer produces, when the money is available, I'm looking to add a fourth sub. I'm not adding a fourth sub to play it loud as the single and express purpose of the fourth sub is to put wax on an already polished surface created by current room acoustics. The point, in my opinion, for the pleasure of the viewer/guest, adding a third or fourth sub is not about playing it loud but instead is about having quality bass at all listening positions.
(at no time in my above am I trying to be in conflict with what Tom or what anybody else has recommended.)
Anybody who wants to is encouraged to weigh-in on the matter of many listening positions, in a large venue and the problems associated with trying to get too little to do too much.
My simple and sole concern is, based on posted images, your expectation is going be killer bass for all participants in the movie viewing experience and call me a negative Nancy, I don't see that happening with two subwoofers placed at the front of the room.
My recommendation, based on the amount of effort and finances you're putting into this room, if you haven't already, acquire room measuring capability so as to be able to see what I'm posting about and to aid you in your efforts to create a killer Home Theater based movie experience.
-Edited by BeeMan458 - 4/27/13 at 12:35pm