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Old 17th April 2013, 04:45 AM   #1
Gost22 is offline Gost22  Bolivia
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Default Tube buffer with 6n1p-EV

Hi guys!
I need a quality schematics for buffer or project for my CD player with Russian tube 6n1p-EV.
Thanks for the help!
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Old 17th April 2013, 10:27 AM   #2
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Here is a low voltage version I found googleing.

Google Afbeeldingen resultaat voor http://3.bp.blogspot.com/_uIURzAJc9_w/TUUf5S_9klI/AAAAAAAAASg/ykvBJV8o8_M/s1600/skema.jpg
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Old 17th April 2013, 12:06 PM   #3
JMFahey is offline JMFahey  Argentina
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Just curious, what's the purpose of adding such tube buffer in the signal chain?
I guess any CD player has low enough output impedance to drive most anything.
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Old 17th April 2013, 02:53 PM   #4
Gost22 is offline Gost22  Bolivia
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Quote:
Originally Posted by JMFahey View Post
Just curious, what's the purpose of adding such tube buffer in the signal chain?
I guess any CD player has low enough output impedance to drive most anything.
Hi,
Tube sound!!!
cheers!
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Old 17th April 2013, 04:03 PM   #5
JMFahey is offline JMFahey  Argentina
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Quote:
Tube sound!!!
I imagined so
Ok, go ahead, it's your party.
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Old 17th April 2013, 04:13 PM   #6
Gost22 is offline Gost22  Bolivia
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Hi,
Is this tube 6N1P-EV can be used in the buffer or required some changes to the schematic?
thank you!
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Old 17th April 2013, 07:33 PM   #7
JMFahey is offline JMFahey  Argentina
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Build the one suggested in post #2.

The one shown in post #6 is a mess.

For the #2 one, you can get the +/-30V or thereabouts (it's not that critical, higher is better) from your power amp ... which of course I guess is not a Tube one.

By the way, I have commercially sold such tube buffers , under the brand name "Valvulizer" (tm) for those who insist on having some orange glow in their amps ... but I consider them a scam (yes, my own too).
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Old 18th April 2013, 01:48 AM   #8
Gost22 is offline Gost22  Bolivia
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Quote:
Originally Posted by Bas Horneman View Post
Hi Bas Horneman!
What should be changed in the schematics if the voltage is increased to +/-42V?
thank you!
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Old 18th April 2013, 01:55 AM   #9
JMFahey is offline JMFahey  Argentina
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I can answer that one: raise cathode resistors, R3 and R31 to 15K or 22K.
As I said earlier, the higher the voltage the better.
I used rails between +/-42V and +/-70V for what basically is the same circuit.

That tube (or most others) will be *really* happy with 160V (total) voltage or higher, so any step you take in that direction is fine.
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Old 18th April 2013, 03:20 AM   #10
Gost22 is offline Gost22  Bolivia
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Default Power supply?

Is this power supply can be used?
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File Type: jpg Schematic for power supply.JPG (86.7 KB, 197 views)

Last edited by Gost22; 18th April 2013 at 03:37 AM.
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