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Old 13th April 2004, 07:41 AM   #1
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Question 6n3p = ECC85 ???

Hi guys,

Is 6n3p a Russian equivalent of ECC85??

I've got 2 beautiful PCC85 Telefunkens in unopened packages.

And I would like to use them in the following preamp:

http://members.lycos.nl/Aren/id42.htm
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Old 13th April 2004, 10:45 AM   #2
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Hi,

Even though some vendors seem to say 6N3-P and ECC85 are equivalent, they aren't at all.

If anything the 6N3-P is closer to the 2C51.

Cheers,
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Old 16th April 2004, 02:41 AM   #3
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Isn't it possible to substitute the 6n3p with an ECC85, even though they are not equivalent?

I mean, just like substituting a 6SN7 with an ECC32...

Quote: " Same as Mullard ECC32, it's not equivalent to 6SN7, but all we know ECC32 is one of the hottest 6SN7 substitution in the market nowadays... "
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Old 16th April 2004, 10:07 AM   #4
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Any comment?
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Old 16th April 2004, 10:54 AM   #5
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Hi,

What may somehow hold true for the ECC32 and the 6SN7 just isn't true for the 6N3-P and the ECC85.

That doesn't mean you can't build a similar circuit with an ECC85 to what's been done with the 6N3-P.

It's just that the two are NOT equivalents in any way unless one would claim all pin to pin compatible valves to be equivalents.
We all know that that's just not true.

Cheers,
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Old 16th April 2004, 07:48 PM   #6
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I have a box full of ECC85s, be nice to find a use for them. I was thinking along the lines of something like this, or as a common cathode driver stage for a little SEP.

dave
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Old 16th April 2004, 08:07 PM   #7
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Hi,

Dave, et all,

Think of the ECC85/6AQ8 as some sort of ECC81/12AT7 with different heater requirements.

So, with a little bit of math and imagination you could use it wherever a AT7 is used: driver, phase splitter, input stage...whatever.

Cheers,
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Old 16th April 2004, 08:23 PM   #8
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Quote:
Originally posted by fdegrove
Think of the ECC85/6AQ8 as some sort of ECC81/12AT7 with different heater requirements.
Thanx Frank... they do look close, at least in the basics...

ECC85

Click the image to open in full size.

ECC81

Click the image to open in full size.

dave
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Old 17th April 2004, 12:18 AM   #9
DougL is offline DougL  United States
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Quote:
And I would like to use them in the following preamp:
Nice looking preamp.

No reason not to build something like it with ecc85's

Buy the Tube cad program, and use it to bias your selected tubes.
We can help.

The Link to Tube Cad


Good Luck.

Doug
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Old 17th April 2004, 12:30 AM   #10
dhaen is offline dhaen  Europe
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Default Sacrilege

Quote:
Originally posted by planet10
I have a box full of ECC85s, be nice to find a use for them. I was thinking along the lines of something like this, or as a common cathode driver stage for a little SEP.

dave
They were meant for FM front-ends. Seems a shame to use them for AF
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