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Old 16th July 2014, 04:04 AM   #1
6L6 is online now 6L6  United States
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Default Adjusting P3 - a video

A 5 min video of what happens when P3 is adjusted. Enjoy.

https://www.youtube.com/watch?v=CQG2j9fkr9E
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Old 16th July 2014, 08:02 AM   #2
biju55 is offline biju55  India
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It is very Informative video ......
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Old 16th July 2014, 05:10 PM   #3
Marra is online now Marra  United Kingdom
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Thank you Jim very informative.
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Old 16th July 2014, 06:15 PM   #4
PKI is online now PKI  United States
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nice video, thanks!
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Old 16th July 2014, 06:16 PM   #5
Hikari1 is online now Hikari1  United States
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Thanks Jim. Very cool.
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Old 16th July 2014, 07:53 PM   #6
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Nice!
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Old 17th July 2014, 01:45 AM   #7
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Nice job! Very informative. Thanks.
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Old 17th July 2014, 04:02 AM   #8
The Dastardly Dad of Three
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really excellent stuff - plus v useful comments on the sound when h3 dominant.

Did you have any observations on sound vs phase of H2 ?
The scope shows that the residual H2 phase 'flips' as you travel through the null point.
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Old 17th July 2014, 04:30 AM   #9
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Thanks for the video. Can't figure how to adjust if one does not have a scope/distortion analyser...

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Old 17th July 2014, 05:20 AM   #10
6L6 is online now 6L6  United States
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Quote:
Originally Posted by anilva View Post
Can't figure how to adjust if one does not have a scope/distortion analyser...
Well, you can turn the pot, listen, take notes, and try again...

Do you have a signal generator and a soundcard? You can FFT the signal and see the harmonic spikes.
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