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Electret Microphone Degradation
Old 30th December 2010
Gear Addict
Fieldstone's Avatar

Electret Microphone Degradation

I have a pair of old 70's era electret microphones that seem to have finally bitten the dust.

The output had always been somewhat lower on these mics but they always sounded great as dry overheads. I pulled them out of their case today and the output was just horrible. The frequency response sounded as if there was a hpf set at around 700hz.

Is this typical of electret mics over time? I've read of degradation...but this bad?
Old 30th December 2010
Lives for gear
LeeYoo's Avatar

Stupid questions.

Are they battery powered or phantom power?

Maybe moisture?
Old 6th January 2011
500 series nutjob
pan60's Avatar

i have some that will hardly pass signal.
i don't even have a interest in hem anymore.
Old 6th January 2011
Lives for gear
Matti's Avatar
The charge of the skin fades away espc. on the older constructions and they didn´t like heat either.

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