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Old 24th January 2024, 02:14 PM
Princo Princo is offline
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Join Date: Nov 2021
Location: Newcastle
Posts: 48
Default wad 300b pse monoblocks feedback problem

Just finished building 300b monoblocks, all is fine when FB not connected, but when FB connected the bias voltages are all over the place.(see attached )

Have checked wiring numerous times and all seems fine, both amps have the same issue so it must be something i've done but i just cant figure it out.

The rectifier is a 5AR4 so the voltages are a little higher than design
Attached Images
File Type: jpg 300b pse schematicFB.jpg (60.8 KB, 26 views)
File Type: jpg 300b pse schematicNFBsmall.jpg (48.9 KB, 22 views)
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