I have a Yamaha RX-V1200 receiver. It has a 5-band equalizer for the center channel (100HZ, 300HZ, 1kHZ, 3kHZ, and 10kHZ). I'm trying to figure out what blend of the different frequencies will produce the best sounding dialogue for movies and normal TV viewing. Do all receiver's have a built in equalizer? Does anyone have any recommendations for settings? Can anyone explain what each frequency band will emphasize? Thanks for your help, everyone.