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In Reply to: RE: question....... posted by tube wrangler on November 25, 2014 at 16:10:34
Sorry Dennis, we both got off track talking about impedance loads.
You're original statement claims that if you lower the idle current of a 2a3 loaded, with a 2500 ohm load, with 250 VDC across the tube, from 60ma. to 43.5ma the distortion will go down.
The fact is the distortion will go up, not down.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
Follow Ups:
HD depends on your drive level into the tube.
---Dennis---
Yes and no.Certainly the % of distortion goes up as the grid drive level and the output power goes up, and the % of distortion goes down as the grid drive level and the output power goes down.
But if the operating condition (idle current, plate to cathode voltage and load impedance) is not properly chosen the distortion will be higher at all grid drive levels and all power levels.
In your response please stick to the point and remember this discussion is only about the HD produced by the output tube and the effects of lowering only the idle current leaving the other parts of the operating condition unchanged.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
Edits: 11/25/14 11/25/14
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