I sent the below question to Ron at SVS as well. I'd just like to see other SVS owners opinion on this as well.. This question is in regards to a 2 channel system that I would like to add a sub to.. For the same price as a 25-31 PC+ I could get two 25-31 CS+ subwoofers. I currently have a Sherbourn amp using only 4 of 5 channels. It has a monoblock style chasis with 200 wpc. Because each channel has it's own power supply, I could run both 25-31 CS+ subs to the one channel on the amp which from what I can see, should be enough to give adaquate power? The amp has powered my home theater (with 100 lb Paradigm studio's) with no problem. I can only assume that 200 watts would be sufficient for both CS+ subs?? The advantage I would assume would be a sub on either side of the room along with the two main speakers which might sound more coherent and powerful? I have a Rotel RSP-1066 processor and would be confident that I could calibrate the subs properly. However, I can only make adjustments to the settings through an external monitor. Would it be reasonable to assume that after successfully calibrating the subs, that I would not find a need to constantly tinker with the gain because of differences in music? Some artists pump low frequency into their music much more then others as you know. The freedom of simply walking over to the PC+ sub and slightly turning the sub's 'volume' up or down on the SVS itself seems appealing. However, from what I hear, once you properly calibrate an SVS, you shouldn't ever have to worry about messing with it....What in your opinion, would be a better route to take if you were me?