Originally Posted by Marc Alexander
If this will be your forever home enclose the room the size you prefer. You can run your current sub nearfield and save up for more firepower down the road. Don't build your room around your current sub.
I tried initially to run the subwoofer nearfield and the results were underwhelming. The theater area is basically in the corner of a 10,000 to 12,000 cubic foot space. In the past year or so I ended up moving the subwoofer to the corner, to get as much help as I can. But, this too is still quite lacking.
I do plan for this house to be a "forever" house, as much as anybody can say that, so I don't mind doing the construction to get a dedicated theater room. In fact, one of the big benefits I am anticipating is having the room small enough where I can pressurize it with bass. There is a huge difference between hearing the bass and hearing and feeling the bass. I also want to go with multiple subs to get good response across multiple seats. And since my Outlaw sub is now about 13 years old I am ready to upgrade to 2 or 4 Rythmik subs. At first I was just going to go down the road of getting two big output subs. But, really even the Rythmik FV15HPs might not have enough output to pressurize this massive space. Heck, even the upcoming bigger ported subs Rythmik will be offering might not be enough. I also started asking myself if pressurizing all that space is the best approach anyways.
The other benefits one gets to going with an enclosed rectangular room is predictability. One knows in advance where the best place is for 2 or 4 subs. One knows in advance where the best place for room treatments are. One can expect to get good sound without too much effort and cost, after the room is built.
I am also looking forward to not having to shut off the HVAC for the house when I want to watch a movie, since the mechanical room noise is audible in my theater area. Also, since the room is in the corner of my basement, two walls are quite easily decoupled. So building a room within a room really doesn't take that much effort. It will be nice not to have my wife telling me that I am playing the movie too loud, when I want to watch an action film after she has gone to bed. The only downside is that the house is already built. I will only be able to get about 7' 2" ceiling height. If I had any choices when the house was built, I would have given myself an extra foot or two for the height in the basement, but that opportunity is lost now.