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Wadia x64.4 sledgehammer output stage problem
Wadia x64.4 sledgehammer output stage problem
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Old 15th September 2020, 03:35 PM   #21
RobertS61 is offline RobertS61  Netherlands
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That would be even greater but there's some controversy on that diamond buffer issue:
RJM Audio - The B-board Buffer Stage

Can't discuss that with you because lack of knowledge, but they put them in for a reason, I reason
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Old 16th September 2020, 07:29 AM   #22
RobertS61 is offline RobertS61  Netherlands
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Quote:
Originally Posted by analog_sa View Post
These, being diamond buffers with no voltage gain should be easy enough to troubleshoot even without a scope. Just take them out and jumper IN to OUT.

It may even sound better that way.
Now I understand what you say.
Solder them out and short the PCB pin inserts where pin 4 and 8 where?
HA5002:
https://www.diyaudio.com/forums/atta...1&d=1600241481


https://www.diyaudio.com/forums/atta...1&d=1600241271
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File Type: jpg Input and Output pins HA2-5002.jpg (309.2 KB, 9 views)
File Type: jpg HA5002.JPG (20.9 KB, 11 views)

Last edited by RobertS61; 16th September 2020 at 07:31 AM.
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Old 16th September 2020, 10:01 AM   #23
analog_sa is offline analog_sa  Europe
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Wadia x64.4 sledgehammer output stage problem
Yes. The buffers are there in order to drive longer and higher capacitance cables. In some situations the buffers may be beneficial, but they also steal some transparency.
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Old 16th September 2020, 10:09 AM   #24
RobertS61 is offline RobertS61  Netherlands
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The Yes part of your answer means I can pull those opamps out and short pin 4 and 8?
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