This is my first post here, yet I’ve done DIY audio before. I’m looking to get my brother a sub for Christmas and he has always loved my original Shiva that I built 4 years ago. I have also enjoyed it. His current setup already has great sound and decent bass but lacks some punch in the lower end. Up front he has 3 SE-2’s, and for the surrounds he has 2 SE-1’s. We built these awesome speakers from plans bought from Shamrock audio. Anyway, I have hardly any money so here is my question. If I got him the Shiva, would a good temporary solution be to run his sub off of the center rear channel (125 watts)? His pioneer receiver features this option but seems it might not be enough power. Would it still fill in some of that lower end? PS: After 15 posts I can post some links to where you guys can check out some pictures of our previous DIY audio projects.