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Post by thecolourfulway on Oct 28, 2022 18:31:10 GMT -6
I have a fuzz face clone with a “gated” mode….I really like the gate but the threshold is set a bit high for my taste (cuts off too early). Anyone have any tips how this gating effect is achieved and where I might look for components to swap to lower the gate threshold? I don’t have a schematic but I’ve reached out to the company (JHS) and requested one
Cheers & thanks!
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Post by svart on Nov 1, 2022 6:52:56 GMT -6
I have a fuzz face clone with a “gated” mode….I really like the gate but the threshold is set a bit high for my taste (cuts off too early). Anyone have any tips how this gating effect is achieved and where I might look for components to swap to lower the gate threshold? I don’t have a schematic but I’ve reached out to the company (JHS) and requested one Cheers & thanks! I took a quick look at this. Apparently it's a commonly attempted mod and it depends on the fuzz circuit it's based on. However, what I'm also seeing is that it's very hit/miss as far as usability. The section of the circuit you'd need to mod has a very small range of usable adjustment and it's apparently very finicky. |
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Post by bikescene on Nov 2, 2022 17:56:57 GMT -6
My guess is that the gated switch is changing the bias resistor value on collector terminal of the 2nd transistor of the Fuzz Face. If this is the case, the gated switch might be putting a resistor in parallel with the stock Fuzz Face value.
It’s pretty common to see a 10K trimmer or external pot to bath the bias in boutique and DIY Fuzz Faces. I’ve built a Fuzz Factory clone, which has a Gate knob and the implementation is similar in principle.
I came across a JHS video where the owner explains the bias mod on a Dunlop Hendrix Silicon Fuzz Face.
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