I understand it’s normal when the speaker is 20 years old. but I don’t believe b&o intended the noise to be there. Someone must have solved the same problem before.
Especially for speakers with class A/B amplifiers.
If the power LED on your speakers are also a power switch then they got class A/B amps. If the LED is LED only (not a switch you can push) they got IcePower digital amps.
If you can hear the noise within 1 meter distance but not let’s say 2 meters away it’s what I would define as normal.
gone have to open them up and look around, my idea is that it has to do with the auto on and power supply. anyone who has opened this things up and tinkered with those things?
have googled some vids about how to do, but it would be much easier if some one who actually hade a clue could pinpoint me to a specific capacitator or such.
Beolab 4000 will never be 100% quiet. It’s more or less in the nature of active speakers. Keep in mind that they are on max volume constantly and will amplify every bit of noise picked up by the signal cable (read: “antenna”). Even with a shorted RCA plug inserted, they will almost always produce a very slight hum when out of standby. As mentioned by Ravsted above, if you cannot hear it unless very close to the speaker, it can be considered normal.
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