I also set mine by ear and then go back and play around with them for different movies. Ex, I was baby sitting and put on Jungle Book. This a stereo only movie so I set the play back for Pro Logic and set the center for "0" L&R for 3 and surrounds and sub for 12 and the master volume for "0". Wow when the Panther calls out for the Bear after the monkeys take the boy what an echo!