Thursday, 13 July 2017

Standard Hemmo Fuzz/Booster w/ mods

Found an old schematic of Standard Hemmo Fuzz, which has two outputs. One for cleanish boost and second for fuzz. Drew it as described and added diode clippers as notes suggested. Added volume pots for both modes, 2PDT stomps for mode select and basic bypass. Some of you might find this rather usable...


Posted by at 21:02
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3 comments:

  1. Unknown27 July 2017 at 15:17

    Any video demos anywhere? Looks interesting enough, might try when I get new parts in

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  2. Unknown29 March 2019 at 18:25

    Hi everyone, I've just finished building one of these, it works well but despite being at the highest level, the output volume is anyway lower than the volume in bypass

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  3. JDT24 November 2022 at 01:23

    I think the second commenter probably built the layout correctly and that the problem is the design.

    I prepared a board for this one, but then hesitated to populate it after looking at the resistor values. I decided instead to breadboard the circuit, and found it severely lacking. Both the boost and the fuzz outputs sound distorted and gated (not in a good way), and neither gets above unity volume. I then tried changing the resistor values for Q1 to those of the recovery stage of a Big Muff. The boost output then functioned as expected, while the fuzz was improved, but still sub-par. Maybe I can rework the board into something else.

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