undefined I have a yamaha rx-v630 i hook up a rear center channel ,it work find in hi-fi entretainement/6 ch stereo and when i try the test tone all go okay. My question is... why when i push the ex/es button on the remote control to chose from auto,matrix 6.1,or off the matrix 6.1 never show on the display i am in dts surround and watching daredevil 5.1