Originally Posted by WormInfested
my space is roughly 2500 c.f. . living room itself is 16x14 with a partial wall in the rear and an area where it opens up into the kitchen. vaulted ceilings. sub spot is directly behind the couch. i do mostly movies but getting back into playing music. so 80/20. i run my current sub around 2pm or a hair after. i found that it works well like that with movies. +3 on my receiver. maybe i need something more powerful than two 400 watt subs. not sure. i got my sub list going but undecided a bit but trying to get the best deal i can for two subs if possible. 1800 or less.
This still does not determine at what volume you listen, so making suggestions or assumptions about which sub or subs would be suitable is taking a wild shot in the dark with no info. Knowing the room size is helpful, how open it is, and what your intended use is helps of course. But this leaves out the most important part.
What is the MV(master volume) on your receiver at the typical loudest volume you listen? When you say +3 on your receiver, I assume you mean that you have the subwoofer trim at +3, as +3 MV would be exceptionally loud. Very few people have the system capability to listen at 3 above reference.
Here is an example. Reference level is 0 on the master volume. Let's assume that you listen at -15 MV, which is 15 dB below reference level. Reference level = 115 dB peaks from subwoofer, plus however "hot" the sub is calibrated. So at -15MV with sub 6 dB hot(common), your sub should be able to produce SPL peaks of 115-15+6, which is of course 106 dB. This does not take into account the additional SPL the sub may be called upon to produce from bass redirected from the rest of your speakers, which could be another 5-6 dB. This brings the peak output requirement to 111-112 dB if you listen no louder than -15. If you prefer to listen at -10, add another 5 dB.
By the same token, if you want to have clean, uncompressed output from your subwoofer(s) and you watch movies at reference level, you will need subs that can dish out in excess of 120 dB in room.
Now given your budget, this does narrow down our choices. I would say you would be hard pressed to beat a pair of FVX15's for output and extension for under $1800.