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Old 11th February 2011, 10:44 AM   #11
SY is offline SY  United States
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Rich, with 100% feedback (probably 20dB or so), the distortion becomes less of an issue.
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Old 11th February 2011, 11:29 AM   #12
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Ya....SY your'e right...sorry, I just' have a heck of a grudge against this sonically awkward tube ! --> anyday a 6SN7. (BAd day)

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Old 11th February 2011, 11:36 AM   #13
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If you run it well over 10mA it performs acceptable. It is normally run at far to wimpy currents.
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Old 14th February 2011, 07:24 AM   #14
radio is offline radio  Macedonia
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Question Sheme with ECC82!

Hello!!
People give this monster display scheme of pre-amp with ECC82!!?
Best Regards!
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Old 22nd February 2011, 10:14 PM   #15
radio is offline radio  Macedonia
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Wink High-End Preamplifier with ECC82 - Project!!

Hello!
People do not be shy, give it hang here with ECC82 High-End Preamplifier scheme!
Best Regards!!
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Old 23rd February 2011, 04:17 AM   #16
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Well, Where is it to be seen ?
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Old 23rd February 2011, 05:44 AM   #17
radio is offline radio  Macedonia
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Unhappy High End preamplifier with ECC82-Circuit!!

So I'm looking for scheme High End Preamp with ECC82!
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Old 23rd February 2011, 10:51 AM   #18
DF96 is offline DF96  England
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A circuit diagram would be nice!

I compared ECC82, ECC804 and 6FQ7 in a simple cathode-coupled circuit. The ECC82 was best, particularly RCA. Note that these results will not transfer to a common cathode circuit, as the distortion mechanisms are different there.

BTW radio, the best way to get an answer is to ask a polite question and then wait for a reply.
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Old 23rd February 2011, 03:10 PM   #19
radio is offline radio  Macedonia
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Hello!
I wanted to offer a measurement performed on Vacum Tube SRPP Preamplifier With ECC82-Project!
The ratio of the second and third harmonics.
Also i want to see the measured frequency response.
Thanks for your help!

Last edited by radio; 23rd February 2011 at 03:29 PM.
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Old 23rd February 2011, 03:36 PM   #20
radio is offline radio  Macedonia
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Lightbulb Measurement and feedback!?

Hello!
The measurements refer to the preamplifier is given below in Scheme (Figure 1)!
Please someone let that little comment about this amplifier, if it does as a power amplifier.
Feedback to be about the sound and display measurements if it worked.
Many thanks in advance!

ECC802S-12AU7-ECC82-Tube-Preamplifier-Schematic.png

Last edited by radio; 23rd February 2011 at 03:45 PM.
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