Hi everyone, my question is if anyone knows a way to fully test these speakers against malfunction? Reason for asking is because I'm concerned about if the built in speakers are blown or something. I hear all these good things apple said about their audio on this gen of MacBook but I believe I'm not hearing it correctly. Does anyone notice when playing music something feels missing out of a song or sometimes it sounds buzzy like the speakers are being pushed? That's what I'm experiencing on my end and I'm just wondering if mine are bad.