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Old 3rd November 2012, 01:22 AM   #2611
lhquam is offline lhquam  United States
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And you could put it series with either source pin with the capacitor connected to the source pin. That way the resistor is NOT performing degeneration. I suspect that Nelson will eventually show a schematic with source resistors of around 0R1 and one or more pots to adjust the 2nd harmonic similar to what I show in post F6 Amplifier.

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You could put it in the drain of the top xister with probably no effect at all
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Old 3rd November 2012, 01:35 AM   #2612
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Thanks guys

Using 25V and 3A (1.5A per channel )gives approximately 8mH for the inductor(s) That's what I needed.

Now just need some confidence for PTP wiring.
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Old 3rd November 2012, 02:18 AM   #2613
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Your good. Be deliberate and check everything twice, from beginning to end. You will like what you here.
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Old 3rd November 2012, 02:31 AM   #2614
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Your good. Be deliberate and check everything twice, from beginning to end. You will like what you here.
Thanks
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Old 3rd November 2012, 04:43 AM   #2615
lhquam is offline lhquam  United States
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I am considering a new stock market strategy based on what components Papa uses in his amplifiers.

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So the official F6 manual isn't even out yet and the ouputs aren't available anymore?
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Old 3rd November 2012, 09:45 AM   #2616
Zen Mod is offline Zen Mod  Serbia
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.....You will like what you here.
frankly , sometimes really puzzles me - why I'm here

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Old 3rd November 2012, 10:07 AM   #2617
generg is offline generg  Germany
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Originally Posted by flocchini View Post
Thanks guys

Using 25V and 3A (1.5A per channel )gives approximately 8mH for the inductor(s) That's what I needed.

Now just need some confidence for PTP wiring.
Do it, it is one of the easiest PTP I made, only thing is to check twice the polarity of the windings to be correct.

@ ZM ISKRA adventure continues tomorrow, my wife has a cold and I have to do the household and some more....
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Old 3rd November 2012, 10:15 AM   #2618
Zen Mod is offline Zen Mod  Serbia
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regarding Iskra repeaters - yeah , you can mount all parts , sans outputs, directly on xformer pins
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Old 3rd November 2012, 10:27 AM   #2619
generg is offline generg  Germany
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Yes i did so, even with the smaller Jensens....

As to the sonics I am still divided some things are perfect others I miss.
Of course I am positively impressed that Nelson installed ten in his house, he would not do this if he wasn't enchanted.
Or is it the way he is always checking his First Watt Amps?

Putting a 1k pot over the upper secondary winding changed in my circuit only the k2! it got bigger and bigger, but not smaller.
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Old 3rd November 2012, 10:37 AM   #2620
Zen Mod is offline Zen Mod  Serbia
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well - you need it just to spoil potential perfect symmetry

just to be sure - last night - you properly tested coils phasing ....... so I don't need to rush to my workshop , to do the same ?
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