I got a SC3 as a Christmas gift and I'm trying to tinker with the setup. I'm wondering if someone can help me with the phase control on the back. I've currently left the setting at 0 however it can go to 180 degrees or anywhere in between. Can anyone give me an idea of what may work best?

It's currently sitting about 6 inches from the front wall centered between my two front towers, slightly to the left of my television and center speaker. We have a small living room so the SC3 pumps out more than enough sound so far, but I'd like help making it even better and the phase control makes no sense to me.

Any thoughts would be appreciated.