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Old 21st November 2012, 06:45 AM   #1071
RCruz is offline RCruz  Switzerland
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It sounds ok now.... we droped the second stage cascode that made it sound rather harsh.

The new folded cascode input adds some detail and brings noise down.

I will post some pics latter in the simplistic thread.
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Old 21st November 2012, 08:05 AM   #1072
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Thanks Ricardo I will look in the simplistic thread.
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Old 25th November 2012, 02:51 PM   #1073
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Salas, can be an upgrade change 6N2PEV to EF86? or can be a waste of the time & the money?
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Old 25th November 2012, 03:52 PM   #1074
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That's a pentode. Talking about redesigning around it in essence. Can't guess results. 6N2PEV is very sturdy for ringing surely in Itch, EF86 don't know how it would fair in that sector is another thing.
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Old 23rd December 2012, 12:58 PM   #1075
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Can replace 6N2P-EV for 12AX7/ECC83? Do you know wich one 6N2P-EV is the best Saratov or Voskhod or do you know other manufacturer?

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Old 23rd December 2012, 01:06 PM   #1076
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No.
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Old 23rd December 2012, 01:07 PM   #1077
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Do you know wich one 6N2P-EV is the best Saratov or Voskhod or do you know other manufacturer?
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Old 23rd December 2012, 01:11 PM   #1078
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Quote:
Originally Posted by Salas View Post
No.
Thanks, I supposed not pin compatilbe because I see Russian areselling th adapter.

Click the image to open in full size.
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Old 23rd December 2012, 01:16 PM   #1079
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There will be gain, Riaa, and grid leakage differences, bias issues also. Input stage is designed around 6N2PEV special characteristics. Avoid near substitutions like 12AX7. They may work but they will unsettle the specs. Also not pin compatible of course, thus the adapters.
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Old 23rd December 2012, 01:17 PM   #1080
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So the way to improve is using better 6N2P-EV, what's your favourite?
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