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RE: Crackling noise?

Posted by emsquare (A) on August 7, 2010 at 14:33:45

In Reply to: Crackling noise? posted by ocezam@comcast.net on August 7, 2010 at 14:00:12:

Hmmm, just to be sure it would be good to switch the sides of the amplifier that is driving the speakers just to be sure that the noise stays with the speaker. Assuming that it does not follow the switch I might suspect a loose connection might be causing a 'crackling sound' before wire delamination. When the wires start to lift from the mylar the sound is usually described as something like a rattle, buzz or an occasional popping sound. Having had a pair of Magnepan's that had a 'crackling' sound I found that one of the speaker wire terminals was not fastened firmly from the factory. Another thought might be a fuse element that is broken but still touching until it is vibrated sufficiently to seperate for an instant. Again, this is from experience, although from a different speaker.

If it does turn out to be delamination you might be able to use a flashlight to see past the grill cloth. The most common type of delamination is sometimes called 'banana peel' seperation at the ends where the wire turns back to start another row. A number of people have been able to follow Peter Gunn's method using contact cement to repair this. But I find myself hoping that you find a much easier loose terminal fault, instead.

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