Lehmann Audio Black Cube crackling in the acoustics


Hi, I am happy to use lehmann black cube statement + original PWX. I recently discovered an unpleasant problem. My audio system consists of: technics sl-1500c MC cartridge AT33EV, and amp Musical Fidelity M6si. I can hear the fans in the WC and bathroom turning on through the speakers. I also hear the refrigerator motor turning on. However, I don’t hear the air conditioning motor or hood in the kitchen turning on, and that’s good. The power wiring in the house is new. Please tell me this could be a problem with my lehmann black cube.  Alex

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Yes, the system is connected to the same home network, I just used a MM cartridge before. I upgraded and this problem appeared . But the air conditioner and kitchen hood cannot be heard to start

Ah, I meant the power circuit, not the network. If there is a noise when the fans in the bathroom turn on it might be transmitted via the power supply. Some people go as far as to use a separate circuit from the panel to the sockets supplying the audio gear to avoid that.

It is currently not possible to create a dedicated power line. We need some new solution. I replaced the fans with lower power ones, but the problem remained. A crackling sound, like a shot, at the start and when the fan is turned off. The air conditioner filter distributor is most likely not a solution to the problem.

Are both circuits on the same side of the breaker panel? If so have one moved to the other side and see if that cures the problem!

How Do Electrical Panels Work? - Dengarden

Thanks, I'll do a test. But it’s strange, I bought a Chinese 18W fan with a control panel, plugged it into the wall and everything is fine, no crackling in the speakers. In all likelihood, it has a “soft start”. But the problem is that it starts only from the control panel.