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Quad Esl 2905 reliability issues?

I have owned a pair of Quad 2905 for six years problem-free. These are my favorites amongst the high end speakers I have owned so far. But lately one of the panel start to buzz and pop 30 minutes into my listening session. Does it mean that I have panel failure? I am puzzled because I am sure I did not over-drive the speaker.
mvp100

Showing 3 responses by mvp100

mvp100 OP
4 posts
 
Correction. " one of the panels start to buzz and make audible popping noise after they have been turned on for 30 minutes or more"
mvp100 OP
4 posts
 
The thing is one of the speakers is working fine but the other one seems to be faulty. I could still play my music if I just ignore the soft buzz and pops but will it get worse and affect all the other working panels.
Should I replace all the panels of both speakers or just the faulty ones if I don't want sound quality to be compromised .
mvp100 OP
4 posts
 
The reading was about 30. The speakers are in a windowless room with air-con set on timer. What are the signs of high humidity affecting the panels?
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