I'm totally off playing it at the minute Petronius. And I am a rank amateur. I really don't know what happened as it didn't feel uncomfortable and alive been in lots of loud environments.
It's the same noise, just louder and more intrusive/piercing. I also get this shimmering echoing sound which I've had before and comes on when the main noise is loud but when it's was quiet I don't hear it. I spoke to Yamaha and they said my piano, played at full effort, can reach approx 85 decibels, but I'm a rank amateur.
Hi Petronius - you said in a response to me that you had gone through similar and it eventually quietened down. How long did it take may I ask and was the spike as a result of noise? Thanks - Allan