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How to use Russian tube 6H6
How to use Russian tube 6H6
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Old 20th April 2016, 12:56 AM   #31
adason is offline adason  United States
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and some test results...I do not know how much watts it can make, but plenty for normal listening, and especially for headphones
It is reasonably flat, -5dB from 30 Hz to 15 kHz, with small hump at 120 Hz, and slowly rolling of below 100 Hz.
It has very low noise (no preamp tube), at about -100 dB, and it is quite clean, respectable at ~0.107% at normal listening level.
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Old 20th April 2016, 02:14 PM   #32
adason is offline adason  United States
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Quote:
Originally Posted by AJT View Post
for multiple output tubes series parallel operation of heaters can be used...
that is exactly what I tend to do, like now I have 12V DC power supply on two tubes in series...however, it is not going to cut down the power needed after all

Last edited by adason; 20th April 2016 at 02:16 PM.
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Old 20th April 2016, 03:45 PM   #33
Koifarm is offline Koifarm  Netherlands
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Quote:
Originally Posted by adason View Post
I know this is an old thread...
Soundbrigade, have you built anything with those Russian 6N6P dual triodes? I have quite a few of these. Just for fun I used one dual in parallel as output tube with small SE output transformer, and it worked fine and sounded ok. Good as headphone amp, perhaps.
Did anyone tried to use these in OTL amp? Like those Bruce Rozenblit made with tv tubes? I could experiment with parallel tubes, even if it would have just a cap on output, but I do not want to spent too much time experimenting. Is there any schematics for OTL, I think Tim de Paravicini did something like that. Anyone?
I have 6n6p parallel in OTL for headphone amp. Same schematic as below but then i used 6n6p. Anode voltage is 200v. And if you need some amplification ad a 6n6p srpp stage.
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Old 20th April 2016, 06:50 PM   #34
adason is offline adason  United States
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Koifarm, that is precisely what I am looking for...except I would like to drive high efficiency (98dB) speakers with it, so paralleling more tubes would be the way to go. I got plenty of those 6N6Ps. Thanks for the schematics.
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Old 20th April 2016, 08:15 PM   #35
rotaspec is offline rotaspec  New Zealand
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Quote:
Originally Posted by Koifarm View Post
I have 6n6p parallel in OTL for headphone amp. Same schematic as below but then i used 6n6p. Anode voltage is 200v. And if you need some amplification ad a 6n6p srpp stage.
Hi Koifarm. Would you mind PM me the whole CDT100 diagram if you have it. A friend has both this and the CDT200 that he would like to modify (or repair in the case of the faulty 200).
We have not been able to obtain info on these players.

It would be much appreciated.

Gary.
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Old 20th April 2016, 08:50 PM   #36
Koifarm is offline Koifarm  Netherlands
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Rotospec you have a PM.
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Old 2nd February 2017, 12:35 PM   #37
Tyimo is offline Tyimo  Hungary
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Hi Koifarm!

Quote:
I have 6n6p parallel in OTL for headphone amp. Same schematic as below but then i used 6n6p. Anode voltage is 200v. And if you need some amplification ad a 6n6p srpp stage.
Could you give some informations about that amplifier?
- input/output impedance?
- How many power has it?
- What would be the optimal load?
- etc....
Greets:
Tyimo
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"Replacing any coupling capacitors with a well designed and correctly matched driver or interstage transformer yields an almost shocking improvement in sound..." Peter Qvortrup
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Old 13th January 2018, 08:06 PM   #38
BVG is offline BVG
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Originally Posted by adason View Post
Some edcor trafos arrived, so I made simple se amplifier with 6H6P (6N6P) one dual triode per channel. I got some help from lampizator (thanks Lukasz). It works reasonably well. Here are some pics.
adason, could you please post the schematics with the final component values?
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Old 13th January 2018, 08:45 PM   #39
adason is offline adason  United States
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Sorry for delay, i unsubscribed from all threads, i was not aware of this request
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Old 13th January 2018, 08:54 PM   #40
adason is offline adason  United States
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here it is...
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