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Audio and Video Talk
Valves / Vacuum Tubes
826 -> GM70 AMP Design
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<blockquote data-quote="JNouw" data-source="post: 522385" data-attributes="member: 14329"><p>The CCS will work there I think. But look at it like this: The driver tube wants to see a high impedance as possible, which you will have in this respect - until you drive the grid positive, then its another story.</p><p></p><p>The output tube wants to see as low a possible driving impedance driving its grid, something that with capacitor coupling is troublesome. I think Norman Crowhurst has documented plenty of that. that is why I am in favour of the IT. the low DC resistance on the secondary recovers the output tube quickly when driven into clipping. I also allows the output tube to be driven grid positive - within limits.</p></blockquote><p></p>
[QUOTE="JNouw, post: 522385, member: 14329"] The CCS will work there I think. But look at it like this: The driver tube wants to see a high impedance as possible, which you will have in this respect - until you drive the grid positive, then its another story. The output tube wants to see as low a possible driving impedance driving its grid, something that with capacitor coupling is troublesome. I think Norman Crowhurst has documented plenty of that. that is why I am in favour of the IT. the low DC resistance on the secondary recovers the output tube quickly when driven into clipping. I also allows the output tube to be driven grid positive - within limits. [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
826 -> GM70 AMP Design
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