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Started by gacki, July 12, 2021, 11:20:53 AM
Quote from: Jenzz on August 05, 2021, 03:37:31 PMWhen the hood is open, the speakers see no air volumina to work on. If you close the hood, the air volimina inside the piano acts as in a closed speaker box. This will increase volume and bass, so the hum gets louder when the hood ist closed.
Quote from: Jenzz on August 05, 2021, 03:37:31 PMIn most cases, shielding is an issue... There are internal ground loops... The conductive paint inside the case bottom can loose connection to ground... Allways use shielded power cables inside the piano.