Which subs are best for home theater?


I now have a double 12" self-powered sub that I'm using in the front channel for home theater. I am thinking of adding a rear-channel subwoofer. My dealer has suggested using a single 15" down firing sub in both front and rear channels. Would a 15" in the rear be overkill? Should I use a 15" for the front? And maybe use the double 12" sub for the rear channels?

Another question would be is a double 12" sub better on audio than the single 15" sub?

Thank you in advance for your suggestions.

MR.upgrade
mrupgrade
Wow, what size room do you have that you need two subs with 15" drivers? I do agree about the downward firing subs, but I think you should look for a smaller driver to retain speed. I think this calls for a REL Stentor II, or if you're feeling really frisky a REL Studio II. Don't hurt yourself now...
I use 2 ASW-800's in the front chanels as subs and one in center to make a full range center chanel. I also use two BAG END infra sub 18's in the rear with life like results and I never find it overpowering. My dedicated theater/listening room is 13' X 26'. I use the ASW-800's (right/left) for 2 chanel audio also and I have had many compliments from audiophiles on the sound. Good Luck and enjoy!
It is a no brainer, Velodyne 18's, either the HGS-18, FRS-18, or F-1800II.

You will not find a better sub for home theater, and if you literally want to move pictures, run a pair up front!