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Old 6th May 2015, 09:28 PM   #1
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Default Converting Forte Model 3 to Model 1a

I believe I saw a post by Nelson some time ago that all that is required to convert a Model 3 to a Model 1a is to change the power supply ground plane and increase the bias. Is this correct and can someone help me with a schematic or other docs? I own both amps and want to convert the Model 3 to a Model 1a to use in a vertical biamp setup.
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Old 7th May 2015, 04:37 PM   #2
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You want a lower voltage and a higher bias, that's about it. If you are at
120V, I think you can tap the transformer primary for 240 and run it at 120,
and that will lower the voltage.

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Old 7th May 2015, 04:42 PM   #3
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Thank you, Nelson!
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