A:Answer I believe it has to do with the initial setup when you calibrate the sound on the assign space using the mic, but is also possible that 50 is a default setting for the sound. In order to give you a accurate info I have to do more research myself but so far for my space I feel a balance of the sound in a 360, sometimes ill go a little loud & of course ill go more than 50, I also suggest to check the different mode sounds for example: stereo, surround, thx, dts, etc. I know is not much but is a point to start, I hope my answer help you.
