Ok I have a question I am calibrating my home theatre system and have a question involving a 5 band Graphics EQ that my Yamaha reciever has for my center channel speaker. I have a Klipsch Quintet 3 system with a sub-10" Klipsch subwoofer with it. I have used a SPL meter to adjust all the sound decibels to the right setting etc. My only issue is dialogue in movies. I have trouble lots of times hearing some things that is being said, and I was wondering if I could tweek this 5 band GEQ to help this issue. any help would be greatly appreciated and what does each freq adjust? Thanks.