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Old 15th November 2012, 07:12 PM   #2801
Zen Mod is offline Zen Mod  Serbia
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I'm reading ya posts all the time



what's situation about K2/K3 tweaking with Iskra ?
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Old 15th November 2012, 08:24 PM   #2802
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surprise....

i tried to get down k2 with the Edcor with the trim pots and it did not work. The smallest distance I could manage was 10db. I tried both secondaries lower and upper.

So the Edcor seems to have a k2 dominance build in and you can not really shape your sound man....
My difference in sound was coming with cap placement. Did you use source resistors or go the naked route posted by ZM. I stopped with .15r on both, with one cap connected directly to sorce on one fet. Cant remember now. I wonder if zen pot works more successfully with larger Rs values, where it would affect gain more.
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Old 15th November 2012, 08:39 PM   #2803
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Thanks buzz!

I use the "naked" official scheme Nelson published. Tomorrow I will look how the ISKRAS behave and report to Zen Mod especially (minority report)
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Old 15th November 2012, 08:57 PM   #2804
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Big honkin trafo fro golden era might surprise.
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Old 16th November 2012, 01:22 AM   #2805
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generg, perhaps in this case, it might be easier to dial in what you want using lhquams love-pot method instead of loading the tx secondaries....if u use small Rs (0.1R?), the effect on class A availability and gain would be small but you can still tune H2 mix and decide also whether you want it on +ve going vs -ve going phase.
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Old 16th November 2012, 07:46 AM   #2806
generg is offline generg  Germany
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Interesting, thank you I will give it a try!
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Old 16th November 2012, 12:46 PM   #2807
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Anyone thinking about F6 PCBs?

Regards,
Dan
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Old 16th November 2012, 01:22 PM   #2808
CeeVee is offline CeeVee  Portugal
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Quote:
Originally Posted by dantwomey View Post
Anyone thinking about F6 PCBs?

Regards,
Dan
For which trafos ?
Maybeso master ZM can tell us where to find some ISKRAS....heheh

..you thinking about Papa standard Jensen ?

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Old 16th November 2012, 01:30 PM   #2809
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally Posted by CeeVee View Post
For which trafos ?
Maybeso master ZM can tell us where to find some ISKRAS....heheh
.....
no way , Jose .......

unobtanium .....

Quote:
Originally Posted by CeeVee View Post
......

..you thinking about Papa standard Jensen ?
what else ?

buzz can buzz is Onetics same in physical layout

BudP have all my trust
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Old 16th November 2012, 01:35 PM   #2810
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ceeVee nailed it. Pinouts are different, at least on the Onetics vs Jensen. ......Then again, I will hae to look, cause with the F6, you can do all kind of crazy things.

Point for point, they are different. Flochini will be listening to Onetics soon, So i think we will get even more back up for Bud's xformers. Cant work on speaks for various reason, so might try to setup measurement rig and get some numbers on the Onetics system, since evrybody loves numbers around here.
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