I am using an old panasonic dvd r65 player and it says it supports 5.1 surround with a built in decoder, so it has the front left front right back left back right subwoofer and center outputs, but even when the player says its on 5.1 and NOT stereo, it only plays from the front left and right channels! i plugged in speakers to the other outputs and no sound came out. I think they are soldered on correctly because when i switch the player to surround sound mode there is a click.