Dunlap Clarke 500 Power Supply Info

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Hi Mooly
I have a few bits of info on this power amp but no mention of the voltage of the secondaries........The smoothing caps are 75Volt 17,000uf . Info on the power supply is almost zero! Wish i'd have taken measurments before the traffo went down! but nevermind!!
 
use a 230:0-40, 0-40Vac dual secondary transformer.
If you plan to use only 8ohm speakers then 2channels will need 300 to 500VA.
if you may use it 4ohm speakers the channels will need 600 to 1000VA.

I don't expect it is properly designed and built to drive 2ohm speakers. I would expect it to drive a 2r0 load for a short while, i.e. until it gets too hot.

With your 240Vac supply you should have about 58 to 59Vdc on each supply rail, but this will vary a lot depending on the demand at the time (day/night).
 
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