In case people are head-scratching... I think you mean this...
3dB in voltage means a factor of square-root of 2, 3dB in power means a factor...
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Just to followup... I've spiced and proto'd some GIC attempts. I've not given up yet, but results are mixed.
It's straightforward to settle on values...
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Tom - Hi, I struggled with the same issues. Freq range and constant output sine waves are just not easily obtained.
I'm OK to drop the VC feature....
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Sine wave VCO
I use a sine wave VCO for trem effects (no thumps or ticks). I'm currently using the circuit in Fig 35 of the LM13700 spec/app notes from TI. It works well....
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Vsat makes sense, but there is also the question of whether the tubes are actually driven into saturation (or grid current). I didn't see mention of what...
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This was a special case where Iq is exactly the AC amplitude.... Wikipedia gives a general form for AC superimposed on DC.
https://en.wikipedia.or...
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Here is a spkr signal plot with both controls varied from zero to mid to max. You can clearly see the damping effect of the controls.
The "L/C"...
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OK - your circuit is similar, but your gyrator cap is 10n - the DSL uses 47n - which makes a difference. It moves the resonance freq down quite a bit....
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Actually, you're right about the bass boost since the response chart shows that lower bass nfb freq's are attenuated.
So, while the spkr output at...
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Feel free to mod or edit my sim. I'm not that motivated to work out the last fraction of a dB or Hz. The sim tells me enough about what's going on. ...
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The prior discussion seems to assume this is a series resonance circuit producing a variable peak in the spkr output at the resonance freq.
At first...
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Yes - that's a scenario that fits what I'm thinking of. Lack of schematic makes the discussion ambiguous.
Yes - I'm using "grid leak" as...
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Simply to say that if the LFP is OK to put on the plate resistor, it is also OK to put on the grid leak resistor. The effect on the tone stack (if any) is...
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A coupling cap is approx a short to AC at high freq's (like 4k) so putting the LPF before or after a coupling cap makes no difference.
The impedances...
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To avoid high voltage, move the R-C-sw network to the grid leak resistor after the coupling cap....
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This one is a drawing error. The bottom of R12 is shown connected to ground. That can't be right. It should be connected to the bottom of C3....
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Not sure if this is based on the Berning patent, but the GAGA is the guitar amp I was thinking of...
https://milbert.com/news
Has...
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It may be settled for you - that's fine. You can believe what you wish.
A quote from Zollner's book may help others decide for themselves. ...
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That's a good point. But, doesn't the equivalence of single freq and noise analysis assume a linear system? It's likely that lower power tests meet that...
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I think the discussion may have mixed different things and good points are being made about all of them. However, it's worth saying clearly that F/R is being...
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