Nick Gorham wrote:

Jim Lesurf wrote:

I can't recall ever building or using an audio amplifier or tuner that had
anything like this large an *audio voltage* across any of the *capacitors*.
Note the above is 70v RMS *between the capacitor terminals*. i.e. not just
an input where most of the voltage appears elsewhere. I have certainly
built (and use!) amps which have audio voltages this large inside them, but
not between the terminals of any of the signal capacitors.

The fact you may not have built such a thing, doesn't mean they do not
exist. Using a coupling cap between a driver and the grid of a 211 would
have this sort of voltage, as will most driver valves. a 845 would have
a much higher voltage.

Utter rubbish. I suggest you measure *across* it.

Graham