Try this using the meter: measure AC input voltage. Should be 220V or whatever is the voltage in your country (use extreme caution when doing this and read up on tube safety guides here and elsewhere). Then using the same setting on the meter, clip it to the output RCA. What do you measure? This is ultimately what goes out of the preamp. The gyrator has very good supply ripple rejection.
If you want to know what your PS is doing and compare to the sim, then clip it to the gyrator B+ input and see what it shows.
If you want to know what your PS is doing and compare to the sim, then clip it to the gyrator B+ input and see what it shows.
I have two valve with high difference in the anode current, one with 3mA & the other 6mA (bias set to 120V B+ and -9V), I'm using filament bias & want to know what's the best approach to match both 26?
1-The tube with anode-current high reducing the B+ to get 5mA & increase the B+ of the tube with anode-current low to 5mA.
2-Look for another tube to match same or similar anode-current.
TIA
1-The tube with anode-current high reducing the B+ to get 5mA & increase the B+ of the tube with anode-current low to 5mA.
2-Look for another tube to match same or similar anode-current.
TIA
Used this one & works flawlessly, thanks Bela.
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After 20+ years as the US distributor of Lundahl transformers, I have decided to retire to focus my time on enjoying life with my family.Effective immediately, please contact Holger Schaarsmidt at erhardaudio@gmail.com for any transformer order inquiries.
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Robert
Hi Andy,I take the end bells off and mount them under the chassis. You just need the primaries. They're big and solid items.
Why take the end bells off of the Hammonds?
Robert
It was the advice of Bud Purvine, maker of O-Netics. He said transformers sounded better without end bells.Hi Andy,
Why take the end bells off of the Hammonds?
Robert
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