Kevperro - Some of what you say is true. A larger gauge line cord will reduce the voltage drop and thereby increase the maximum RMS power of an amplifier. On the other hand a larger line cord because of its lower resistance will have a higher rate of change of current vs. time. Faster rate of change means more EMI. (If there is anyone out there who knows anything about electricity, well, my appologies)
Now, for the really misleading aspect of your post. You failed to mention that an amplifier playing music at full tilt (occasional clipping) is delivering 5 to 10 times less that its rated power. This trashes all your calculations by 5 to 10 times. Since max power is a function of the square of the voltage, a power lost calulation would be off by 25 to 100 times.
I have no idea whether you were simply unaware the average to peak power requirements of music or if you were being deliberately inaccurate. I do suggest that before you invoke the possible effects of the great unknown that you first come to grips with the simple stuff.
Now, for the really misleading aspect of your post. You failed to mention that an amplifier playing music at full tilt (occasional clipping) is delivering 5 to 10 times less that its rated power. This trashes all your calculations by 5 to 10 times. Since max power is a function of the square of the voltage, a power lost calulation would be off by 25 to 100 times.
I have no idea whether you were simply unaware the average to peak power requirements of music or if you were being deliberately inaccurate. I do suggest that before you invoke the possible effects of the great unknown that you first come to grips with the simple stuff.