I've been wondering if I should use a parametric equalizer for my subwoofer. Currently, I am using two SVS 20-39PCs setup right behind each of my main speakers against the wall. This configuration gives me both a fairly flat frequency response, as well as a fairly uniform response throughout the various sitting positions. If I put them both in the corner, I would definitely need to EQ to get the flat frequency response. However, does the EQ help yield a uniform response throughout the room? Or will I only get a flat response at the central sitting position?