Reply To: BeoLab 8000: 5-pin cable from RCA-PCB to LED-PCB sensitive

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Solder it.

Hum is just some millivolt.

Copper, mixed with chromeplated steel and nickel will always make some chemical noise.

You can also make a special shortcut plug for testing. Just a shorted Cinch connector.

Then you can test wether there is still humming…