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Topics - dawson

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Build Reports / Quackin' Kraken
« on: January 23, 2021, 02:32:48 PM »

This is my MADBEAN Kraken: an envelope filter similar to a Mu-Tron Micro V, but with added controls and a smaller footprint.  This is one of my favorite envelope filters out of the handful I've built mainly because of its' reliability- I prefer certain sounds I can get out of my SWAH, but only after a lot of fine-tuning.  The Kraken sounds just fine with all knobs at "noon" then can be improved from there with extra tweakery.

Some really solid and useable lead tones can be had when following the Kraken with some sort of Tube Screamer, but the most fun I've had is running the low octave of a Parasit 0415 into the Kraken with the frequency switch set to "Lo.." what a wild relationship- melodies get huge and plucking the muted strings sounds like a robot popping bubbles.

It's built onto a 125B back-plate to work with my modularish stuff- here it is in my wooden box with some neighbors:

Now alone in a "dummy" box:


Thanks for looking!

Build Reports / VP-PW. (DIY Volume Pedal)
« on: March 23, 2020, 07:03:45 PM »
*This is not a recent build, rather it's one of my first builds ever, circa 2017.

I built this volume pedal (and 2 others like it for my band-mates) because the Ernie Ball VP-JR, that had become an important tool of my technique, had developed a horribly scratchy pot that was ruining my swells.

3/4" Plywood finished with diluted India Ink
3D-Printed brackets wrapped with copper tape

At the end of the month I spent prototyping and testing different treadles and strings, then building these 3 things, to my of them had a scratchy pot.  It was then, ladies and gentlemen, that I searched the internet for a solution and was introduced to contact cleaner..(sigh)

Anyhow, it works and feels great, and I continued to use it for over a year even though the VP-JR was functioning properly, however, I now use the VP-JR because of its smaller footprint.

Thanks for reading!

Hello, fellow tone-seekers/makers and noise enthusiasts- I'm very excited to share my latest build, a PPCB Arachnid.

The Arachnid is a (an??) FV-1 based multi-effect that reads 8 pre-programmed effects off of an EEPROM IC, and I've added a simple mod switch (labeled "A-B") to alternatively access the internal programs in the FV-1.  I purchased an EEPROM loaded by PPCB with 8 various delay and reverb effects that all sound top-notch.

I accept no credit for the pattern I've etched here, nor the color scheme, nor the name "REDRUM," for that know where it's from.

I'm getting more and more comfortable soldering surface-mount stuff.  I'd still like to be a lot better, but I'm glad I've started so that I can improve, so I'd encourage anyone on the fence about surface-mount components to go ahead and give them a try.

Now, "Why?" you might ask, did I build this pedal up-side-down? & what's the deal with the connectors?  Well, inspired by the modular Eurorack format, and a bunch of awesome modular builds around here, I'm planning to construct a rack-style pedal-board with all the patching and power self-contained.  I'm using the bottom-plates for regular aluminum enclosures (instead of cheaper plain sheet-metal alternatives) because I'm able to load the effect into an empty box and use it as a stand-alone pedal as seen here, AND, SmallBear sells bottom-plates for a reasonable price.
 Anyhow, more on that when I've built more than one of these and finish my prototype rack.

Oh, and a couple shots of my two-tone LED build, as requested last time I did an equally silly LED set-up:

The Arachnid is a fancy effect, so I figured it should have a fancy indicator light- orange 5mm LED's on the bottom, and a red 8mm LED on top

Thanks for looking!

Build Reports / GREEN BEAN 2019 Tube Screamer
« on: February 06, 2020, 03:40:34 PM »
The Tube Screamer-  It's an overdrive sound that's about as unique as a corn flake- everyone's got or had some version of it, and there are as many of them on the planet as there are ants.  This being said, you may ask why someone who already owns two Tube Screamers would build a third?  A simple answer would be that the Tube Screamer circuit is one of the most-usable lead overdrive sounds of all time in the universe, and Mad Bean just made it sound a little bit better!

Here's my GREEN BEAN build:

The extra clipping options here all sound really great without being redundant- it's going to be another month or two before I pick one as my GO-TO.

I had some extra W20K-taper pots that I used for "TONE" and "LOW" controls.  They're wired off-board because of their pin-out, and also to fit the layout I wanted with the big/small knobs.  Without the other taper to compare them to, they seem to sweep nicely.

All easily fit into a 125B aluminum enclosure.
My "Octagon Pattern" inspired by the number 808 etched with ferric chloride.

Thanks for looking!
Post Script: Yes, if you are thinking that you probably should build one too, you are correct.

Build Reports / Mad Bean Headtrip w/ momentary knob mod
« on: January 25, 2020, 01:31:46 PM »
Ladies and Gentlemen, I'm proud to humbly present my slightly-modified Mad Bean Headtrip FV-1 6-patch multi-effect:

This build functions just like a normal Headtrip, using the red, yellow, and blue knobs as P1, P0, and P2 respectively, but when the momentary footswitch on the left is activated, the Headtrip reads the POT value of the green knob for P1 instead of the red knob.  The red LED also switches off as 2 green LEDs mounted beneath it switch on to indicate which of the POTs is being read.

I implemented this mod because I'm in a band that's written a song with a delay part that needs extendable repeats, but I'm certain other uses will be found upon further experimentation.

Graphics etched on a 125B enclosure with ferric chloride
3d-printed 5mm riser, LED bracket, and interior washers

Thanks for the great project, Mad Bean,
& Thank you for reading!

Build Reports / the FLUNKEE FX-25 envelope filter
« on: January 21, 2020, 10:31:01 PM »
Ladies and gentlemen, the Mad Bean FLUNKEE envelope filter:

This is the most user-friendly envelope filter I've built to date and I'm really feeling the relief of how easy it is to switch between my main sound coupled before a Tube Screamer, and whatever settings I find to play well with other effects- a very good friend of my trusty Parasit 0415 guitar synthesizer.  If I were to compare, it's not as smooth and pretty as a SWAH and it certainly hasn't got as many possibilities as something like a Meat Sphere, but that's to be expected from a 2-knob effect, and it's got a great voice of its own.  I'm incredibly happy with it and would buy another if that ever becomes an option.

Graphics etched with ferric chloride on a 1590B enclosure.

Thanks for looking,
quack-on, fellow envelope filterers!

Build Reports / Hot Cake (Fritter) just the syrup I needed
« on: January 16, 2020, 01:23:43 PM »
Greetings, fellow drive enthusiasts/tone conquistadores,

I'd like to share my build of the Mad Bean Fritter, a clone of the Crowther Hot Cake:

I was impressed by any demo videos of the original circuit I'd seen, so I've built this one stock and it sounds great with my AC-15 set-up as a mid-range drive to fill in the gain gap between my Centaur clone and my Big Cheese clone.  I've been looking for something like this for a long time, and in my search I've used a Rat, an Angry Charlie clone, a Red Llama clone, and an OCD clone, among different multi-Tube Screamer configurations, and the Hot Cake has de-throned ALL of them, I really don't think I could be happier with this sound, BUT I'm certain that I'll put together a board with the Mad Bean mods at some point.

Big thanks to MBP for putting out all of these great-sounding projects with such helpful documentation and low (sometimes FREE) prices,
& thank you for looking!

Build Reports / WaveLord Tremolo
« on: January 11, 2020, 07:29:05 PM »
Here we have the Mad Bean WaveLord Tremolo:

This build came together quite nicely for a "noob/cowboy" like me- I'm impressed with the variety of waveforms and the tweakability available with the DIST. knob.

I've been messing around with these large 8mm diameter LED's and decided I'd wire LED 1, the bypass indicator, as a red 8mm, and LED 2, the pulse indicator, as two teal 3mm LED's mounted beneath the larger red one.  As you can see, in order to fit my fancy lights I had to turn the TAP footswitch 90* and under the PCB, which had to tilt a bit.  Anyhow, I couldn't get a great picture of the red LED but it looks really cool in person- it's switched OFF in the upper left photo and ON in the lower left.

General Questions / Wavelord 1P8T from Smallbear NOT continuous
« on: December 17, 2019, 04:05:22 PM »
Greetings, fellow noise enthusiasts!

This post is regarding Smallbear's 1P8T enclosed miniature rotary switches:

I've just received a couple of these in the mail, however the ones that I got do NOT turn continuously from 8-1 as stated in the MBP Wavelord build document.  Do I need to alter the switch in order for it to function continuously?  Did I buy the wrong thing?  Do I need to crank the poor guy around real-good to make it submit?

Any input would be appreciated!

Open Discussion / 1590B Top-Mounted Jacks
« on: August 10, 2019, 08:02:00 PM »
I wanted to share my method of top-mounting jacks on 1590B enclosures that does not require god-level measuring/plotting/drilling skills, rather it requires an inner washer for the input/output jacks that clears the jacks from interfering with the lip of the lid when the box is closed.  These photographs will provide a much better description of what's going on:

The issue I would first run into when trying to top-mount jacks is the tight fit of the 1/4" jacks against the inner nut of the 9v Jack- if not drilled properly accounting for this, I would see something like:

I'm pinching the 9v nut with the output jack.

Even if I were to space the jacks well enough to clear each other, I might still end up looking at:

The lid simply won't shut all the way.

The first time I saw that, I immediately thought to turn to violence and just grind that lip down and out of my way, which would've worked, but that's no fun to do every time I want to build a 1590B, so I kept thinking, and came up with:

These little dudes not-only allow the 1/4" jacks to clear the lid & the 9v nut, but they also position the outer edge of the 1/4" jacks nice and flush with their washers and nuts:

3d printed washer

Since I own a 3d printer, I can't not print mine, but for the sake of this report and builders who don't use 3d printers, I've bent up some of my heaviest wire and it seems to work equally as well.

wire washer

Here's the money $hot:

A nice closed lid.

If you struggle with the top-mounted jacks in the 1590B's I urge you to try this.  Here's an STL of the 3d model:

I've printed out quite a few of these to PIF away if you'd like to try, but don't 3d print:

If you have your own way of dealing with this, I'm super curious to know of your method; of anyone's gotten this far in reading the post, they'll certainly enjoy your added input.

Thanks for reading.

Build Reports / Red Llama
« on: August 10, 2019, 05:15:52 PM »
This is a clone of the Red Llama by Way Huge- a definite point of interest for any fellow tone-seekers on the holy quest to possess 'just the right' drive pedal for any situation.  Compared to a TS-808, whose sound we all probably know like the taste of chicken, the Red Llama has got more of a treble boost than the TS808's mid boost, and overtones that I can only describe as "glassy."  The Red Llama did not earn a spot on the board that I use in my loud 5-piece band- despite the treble boost, it seemed to get lost in the mix where the TS808 would cut through, however, in a smaller band (one without a second guitar player) I can imagine the Red Llama could really be an awesome, unique overdrive sound.

I've run my Squire Bass VI through the Red Llama with spectacular results.  The Red Llama adds a sharp, hair-raising characteristic to the attack of the notes that I've not run into using any of my other drives, however, not as much low-end gets through as I would like.  I'm excited for the upcoming "Snarkdoodle" project- I plan on doing some breadboarding with the aim of creating a second Red Llama better suited for bass.  I'll start by going with some larger input/output caps, but beyond that, I'm rather clueless, so if anyone's got a bass mod idea they'd like to share, I'd be willing to attempt it and post my results.

PCB: Das Llama,
1590B with etched graphic


I remember putting this together wondering how the
clipping was happening without transistors and diodes..


Thanks for looking!

Build Reports / BIG germanium MUFF
« on: May 25, 2019, 04:34:36 PM »
Hello, I'm Dawson.  I've been building effects for a year or two, and lurking around these forums for a similar amount of time, oogling at all the awesome builds completed by incredibly talented people, but this will be the first time I emerge from the shadows and share a build of my own.

This is my 3rd build, 1st ever Madbean PCB (they're all oh so nice)

A MudBunny made to the Triangle specs using these germanium transistors from SmallBear (I had to see what the germanium hype was all about)

I'm as happy with the sound as I am embarrassed with my wiring, VERY happy.



Thanks for looking!

P.S. this is also my 1st time attempting to post embedded photos, if I'm doing it wrong, any help would be appreciated.

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