I am considering adding a third and fourth subwoofer to my home theater set up. My Klipsch R-112SW subs and the R-115SW subs that I want to add do not provide outputs so, Klipsch support told me that it is not recommended that I run more than two at a time. I am highly disappointed and surprised that Klipsch has sort of prevented their customers from easily adding more subwoofers. (If they had outputs, customers could purchase additional product $$$). I would prefer to add Klipsch subs as I do enjoy the sound (and look) but this has me considering buying subwoofers from another manufacturer. Has anyone added a third (and or a fourth) Klipsch subwoofer to their HT? If so, how did you go about it? And how did it work out?