Chosen Solution
So suddenly my left speaker lost its bass and mid frequencies, and only hi / thin sounds are coming from it. Right one works well. Sometimes when an hour or two passed in mute, and i start a music , i hear a POP sound from the left side as soon as I higher the volume and quickly it looses its power as described.
Apple has a warranty repair for this! Bring your system in to an Apple Store or authorized service center.
So Apple said my warranty is gone because there is a TINY scratch/damage on the right side that has nothing to do with the left speaker!!!!
