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Old 5th December 2017, 08:43 PM   #911
wayne is offline wayne  United States
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You want a hard ground to the chassis from the AC ground and then .047 - .22 from chassis to in put connector. The transistors don't need isolation or insulators as long as the sinks don't touch the chassis. Some of the available transistors are fully epoxy isolated and that makes it easy.
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Old 5th December 2017, 09:01 PM   #912
wayne is offline wayne  United States
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Photo of ground that is quiet and safe.
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Old 6th December 2017, 06:54 AM   #913
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Thank you, Wayne!
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Old 7th December 2017, 09:02 PM   #914
wayne is offline wayne  United States
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Here is a noise floor plot of the amplifier.
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Old 7th December 2017, 09:21 PM   #915
6L6 is offline 6L6  United States
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4uV!!!!

Awesome!
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Old 7th December 2017, 10:19 PM   #916
drpro is offline drpro  United States
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No wonder I can't hear anything
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Old 8th December 2017, 12:31 PM   #917
herrstagl is offline herrstagl  Austria
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Indeed impressive! Nice!!!!
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Old 11th December 2017, 05:13 AM   #918
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the quiescent current of my amplifier is 100 mA at 10 ohms and 45 mA at 22 ohms.
Very heated radiators output transistors.
How else can the output current of the output transistors be reduced?
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Old 11th December 2017, 10:15 PM   #919
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Before I see about ordering my own does anyone have a board knocking about that I could purchase?

Cheers!
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Old 11th December 2017, 11:12 PM   #920
wayne is offline wayne  United States
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Quote:
Originally Posted by Shatto View Post
the quiescent current of my amplifier is 100 mA at 10 ohms and 45 mA at 22 ohms.
Very heated radiators output transistors.
How else can the output current of the output transistors be reduced?
You could reduce the center 10K divider resistors. What output transistors?
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