I just can't settle on the right settings for the bass,midrange and treble settings for my centre speaker using my sony str-db1070. Maybe my jamo centre needs to be replaced. I just can't hear all the dialogue all the time and the best setting is when the equalizer is OFF. But the overall dolby digital sound then sounds muffled in comparison and not as crisp. What is actually happening when I adjust the frequency. If say the gain is at 8 db , does that only affect the frequency that I have chosen??? Maybe I need to lower the frequency to boost the areas of the speech that aren't as loud as others. Am I on the right lines???