MBP Retina speakers start to crack when audio plays
My MacBook Pro Retina 13" (early 2015 model) internal speaker started to make weird popping/cracking sound when audio is played. Cracking/popping continues ca 20-30 seconds after audio finishes. This happens with any kind of audio - even startup chime and chime when NVRAM is reset. Audio plays clean through headphones.
This appeared only 1 week after purchase of the MBP.
Has anyone encountered similar behaviour? How to cure this malfunction?
MacBook Pro with Retina display, OS X Yosemite (10.10.4), 3,1 GHz i7, 16 GB RAM, 1TB SSD