Shapeshifter,
I have an Infinity IL120 sub, along with RF7s,RC7 and RS7s for 5.1. It's HT setup but I use mostly for stereo/listening (small 32" Sony).Sub dialed in w/RABOS.Reciever setup using modified/advanced settings which are mode specific.Have a 14' x 24' room with 8' ceiling. Sub on opposite wall from mains.Can crank it way up,neighbors 200'+ .Still playing with setup, its' been running for 3 months so settings and placement of furniture, speakers still being adjusted.