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Phil Allison[_4_] Phil Allison[_4_] is offline
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Default overvoltage on audio circuits

geoff wrote:

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Duuno what opamps, but 5532 are specced at max +/- = 22V, so 21 OK and
19 more 'comfortable' if running lower actually offers any benefit.


** Console makers who tried to use that 22V spec back in the late 70s soon came a cropper. Any NE5532s ran very hot and most failed in the first year or so.

The PSU voltage on the ICs was soon dropped to 18V or even 15V to get cool operation eliminate failures.


FYI:

Only real service techs know this sort of ****.


...... Phil