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Hoffman Amps Forum image Author Topic: Hoffman-ish 5E4-A/5E5-A, anyone?  (Read 1995 times)

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Offline drew

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Hoffman-ish 5E4-A/5E5-A, anyone?
« on: February 20, 2014, 10:14:57 pm »
I took a stab at drawing up a Hoffman-style board for the 5E4-A Tweed Super/5E5-A Tweed Pro (same thing, except for one resistor).  PDF of first draft attached.  Green boxes above/below board indicate connections to the turrets directly in line with them.  Dotted black lines indicate non-obvious connections; dotted red are underboard links.  Adjustable fixed bias part is just cut-and-pasted from something else for the moment.  .02 caps are drawn as .022; power supply caps are not drawn.

Unverified, untested, unbuilt, don't blame me if it burns your house down, etc.

Did I do it right?  Comments, corrections appreciated.

Fender layouts/schematics:

http://www.el34world.com/charts/Schematics/files/fender/Fender_pro_5e5a_schem.pdf

http://www.el34world.com/charts/Schematics/files/fender/Fender_super_5e4a_schem.pdf

 


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