I made further investigations and found, that the grill in front of the ventilator interferes with the ventilator blades. So I decided to remove the grill right in front of the ventilator intake area. Great surprise: The printer is a lot more silent. I f you also would like to make your printer silent, you can have a look at the included images. Best regards Walter![1_1668935042899_20221120_083527.jpg](Uploading 100%) ![0_1668935042899_20221120_083352.jpg](Uploading 100%)