Update 2015-03-29: I added a vero layout of the deluxe version. Thanks to Synsound at the tagboardeffects forum for verifying! Here is a new original design. :) The Flash Filter Fuzz is a inverter-based squarewave fuzz with a resonant highpass filter and sample & hold modulation. I made layouts for two different versions, a standard and "deluxe" version. Here is a demo-video of the deluxe version (modulation starts at about 4:00) I found this pedal kinda hard to demo, but you should get the idea. :) The controls are as follows: Intensity: This controls the strenght of the resonant peak. Turn it up and it will oscillate. Resonance: This controls the frequency of the filter cutoff/peak. Rate: Controls the speed of the sample and hold modulation. Bias: This controls the depth and range of the sample and hold modulation. It was originally intended as a internal trimpot, but I found it very useful as an external pot. Ultimatly it should been two different pots to control both range and depth, so the 200K pot is a bit of a compromise, hence the not so perfect sweeping action. S&H switch: This is a on/off/on switch that has 3 different modes; LFO disengaged, LFO free running and LFO gated by the guitar signal. With the LFO free running and the intensity turned up into oscillation the circuit turns into a synth/noisemaker thingy. :D Deluxe version layout and schematic:
Standard version PCB and vero layouts: This version doesn't have the sample and hold modulation and is alot simpler to build. It's also tuned slightly different so that it doesn't oscillate with the intensity turned up.
9 Comments
Hugues
10/13/2015 10:00:47 am
Any idea how well this will work with a bass?
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Wizombie
3/23/2017 09:07:26 pm
Hey man built the delux version of this on a vero and I seem to be having volume issues it's working but can only just hear it. Any suggestions?
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3/28/2017 01:32:46 am
Hi Wizombie,
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Wizombie
5/5/2017 10:23:18 am
Cheers for your help fredrik man worked like a charm . Now onwards too mind raping fuzz
wizombie
5/19/2017 04:33:40 am
hey fredrick i know i must be quite a pest by now but should i be adding a power filter cap to your effects? if so what size ? 100uf?
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5/19/2017 06:04:37 am
Hey. No problem. :)
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