My Beolab 1 makes a squeaky noise as soon as it receives a signal. Initially, this noise used to go away in a few minutes after system start up, however, now it is permanent. My speakers are connected to a Denon receiver. I tried assigning different output to this speaker, i.e. from R to L, however the noise continues, so I believe this has to do with something between the output of the receiver to the speaker drivers. Have you encountered this before? Thanks for your help in advance.
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