New to this forum and new to the home theater, I'm about to move into a house and the living room is 16X14 with vaulted ceilings. I currently just bought POLK surround sound because it was on sale over Thanksgiving black Friday, front speakers the POLK Monitor 60's, my center is Polk CS2, the rears are Polk Monitor 40's and got it all for $450 and now there back up to $1200. For now wanna stay with a 5.1 and maybe down the road bump up to the 7.1 o and also my Receiver is a Pioneer VSX-822-K which I bought when it came out a couple of years ago when I was originally gonna do a HT. So far I do really like the POLK surround sound setup but I feel like my receiver is under powering them? I guess this is a 2 part question, which sub should I go for and my max with shipping is $800 and if you guys think I should upgrade the receiver then please give me ideas. All info I do appreciate and thanks for the time to help out a newbie to this awesome world of surround sound.
As for the underpowering issue, wait until you've incorporated a sub into your system and it's taking the lower-frequencies (~80Hz and below) load off the receiver. You may find that a new receiver is not necessary.
Projector: Benq W1070 1080p 2D/3D
AVR: Denon X2200W
Mains: Klipsch RF-62ii x 2
Center: Klipsch RC-62ii
Surrounds: Klipsch RS-42ii x 4
Subs: Dual Hsu VTF-15H's