I always had my recievers sub output level set to 0. When I bought the behringer it said to play a movie with loud bass and adjust the recievers output level until the LED lights on the EQ get up to the yellow or red (clip point). I put in master and commander and adjusted as needed. I ended up turning up the recievers output level to +6.5 then turned my SVS gain down to about less than 1/3. It has concerned me that I turned it up to +6.5. Any thoughts on this? read this link under the heading "setting the input level on BFD" http://www.hometheatershack.com/forums/bfdguide/