I'm assuming the factory speakers are in 2.0 format or stereo. I notice that the volume on the PS3 when playing blurays is significantly lower than with my cable box. I already adjusted the volume through the "triangle" button to "+3" I'm a little confused with the settings that include all the "linear" options. I'm not sure what's best for simple stereo speakers. I notice action sceens are louder and dialogue (most likely center channel) are much quieter.