Left speaker is not the same as the right speaker output

"I got my MacBook 2016 15” repaired TWICE. First time the battery needed replacing, the second time I took it out for being serviced I was experiencing the good old butterfly-keyboard issue. So the repair was free even if out of warranty. My whole topcase got replaced. So I also got new speakers. And now I’m experiencing the same issues as mentioned above.

I have experienced a loud pop on the right speaker that only does low frequency sounds. And my left speaker only does high frequency sounds. Balance is correct. This started after macOS Catalina update.

Really sad that I have so much trouble with a 3200 euro costing machine. The Apple experience is ruined for me. These lineups are real garbage."

"Brought my laptop to the service to get replacement. Actually, I’m pretty sure it’s an OS bug that leads to speaker getting torn apart (but I didn’t open my laptop, it’s just a guess of what happened after laptop woke up and left speaker popped loudly about 7 times)

https://discussions.apple.com/thread/796..."

"I have the same problem on a 2013 MacBook Pro Retina 15” under Mojave : the right speaker is very low compared to the left, with only the low frequencies.

I just replaced both but got no difference"