Building A Clone Of The Vico Vibe Tremolo

The jordan vico vibe interested me in early 2012 mainly because it's so simple. As a rookie solder jockey that wanted to build every type of pedal to try them all the specs sounded very appealing. The tremolo circuit is about as complicated as a fuzz face (the pedal I built before that) and didn't use any optocouplers .

Of course it's a little more complicated than that. The vico vibe is reported to have a volume drop when engaged and the circuit is kind of unusual. It doesn't have any buffers, just two resistors and an LFO that periodically dumps all signal to ground to create the tremolo effect.

This is the classic schematic as found online:

IvIark made a vero layout for this:

I assumed the volume drop needed to be counteracted with a boost circuit, so I built an SHO mosfet boost and connected it right after the circuit. The volume would be set with a trim pot and another trim pot was used to bias the vico vibe circuit.

The final schematic looked like this

I connected these two circuits in series in one box and after careful calibration by ear they sound great. This is vital, though, as the DEPTH and TRIM control interact and trim set too much to either direction will affect the minimun depth, which will make the tremolo disappear.

Here's a picture of the two vico vibes I built:

One is the two vero circuits in one enclosure with two rate controls (red and blue knob) that can be switched with the left footswitch. The other one is both circuits built on one pcb and fits in a 1590A.

I shared the pcb and it can be ordered here (note I don't make money on shared projects).

Building A Runoffgroove Modified EA Tremolo

For a while now, I wanted to build a nice, good sounding tremolo effect. I built the vico vibe in the past but it's quite finicky to bias and has a volume drop when engaged, but compensating this with a simply SHO-style boost after it led to weird interactions. Once it's biased it sounds great, and works well with fuzz and overdrive in front of it. It's actually one of my favorite effects.

But in this case I was looking for something that would be more versatile and would simply work and be reliable. I read a few blogs and recommendations and one website that always intrigued me was Runoffgroove and their original circuits as well as their archive website homewrecker detailing clones and mods. This is where I found the "modified EA Tremolo", which is based on a circuit found on General Guitar Gadgets, which in turn was inspired by a tremolo circuit originally published in 1968 in the Electronic Australia Magazine. Phew.

I chose the ROG version because it is simpler and has a lower parts count. This is the schematic:

My requirements for this project were that I wanted to make a layout that has board-mounted pots, is reasonably small, allows for the pulsing LED to be used both as an on/off and rate indicator (to only have one LED for both), and I wanted it to fit Tayda's new predrilled enclosures. I'm tired of drilling them by hand and sometimes it's nice to use a painted predrilled enclosure and whip something up in an hour.

I made a layout in Eagle and got it fabricated at oshpark (here is a link to order my shared layout). During assembly and firing it up for the first time I though I had made a mistake because there was no sound when the effect was engaged. I also had weird voltages. However the trim pot needs to be adjusted until there are 4.5-5v at Q1 drain. This voltage does not come gradually, it's suddenly there at one point in the rotation and the range is really small, so be careful to get this right, otherwise there is no effect. I subsituted the BS170 for a 2N7000 (opposite pinout), the J201 for a 2N5457 and the 2N5088 for a BC547 (I think), as I had these on hand.

It came out great and sounds pretty good. More "gentlemanly" and subtle than the vico vibe, which I will present in another post (it's a longer story). Maybe I will add a sticker or paint something on it, or maybe I'll keep the bare black/aluminum look.

Building A Clone Of The Way Huge Aqua Puss mk1 MN3005

In 2009 the original Way Huge Aqua Puss mk1 was reversed on freestompboxes.org and revealed to be a slight variation of the Boss DM-2 with Panasonic MN3005 Delay Chip. 

There was a community project and a PCB made up and luckily I managed to get one of the last ones in 2012. It spent some time in a box until I finally got around to finishing it a few years ago. Unfortunately, many of the original links and pictures were dead by the time I got around to working on it so I had to kind of scrape the few tidbits and a BOM together to finish the pedal. The early Aquaboy project on madbeanpedals.com, which was at first focussed on the Way Huge version rather than the original DM-2 was a great help. It featured the schematic and a partslist that could be related to the original schematic.

I managed to finish the pedal, put it in a tall 1590BB and even calibrate it with the DM-2 instructions. This is how it originally looked. I built it exclusively with Dale CMF55 resistors and wima and panasonic caps. I order to make it as high quality as possible, I also drilled holes for the little tabs to keep the potentiometers from turning. Usually everyone just clips those tabs off, but they have a reason. Unfortunately that meant the holes could be seen next to the knobs, which isn't such a pretty look.

I decided to add a control plate to hide the extra holes for the pots and to tell me which knob is controlling which function. This is made from PCB material without copper tracks and was designed in Eagle. It looks really good now in my opinion.

As the PCB I acquired was the last of the FSB community PCBs, and I started getting the hang of Eagle, I then decided to make my own PCB and maybe try a few mods and sell a few pedals if there is more interest. It took a few days, but I made a PCB layout that was inspired by the original Aqua Puss, but a bit smaller, giving me more room to work with in the box and maybe allow mods like double time and modulation. I got them fabricated and they came out awesome and work beautifully and for some reason are quieter than the FSB version. 

I have a few left for sale on my site including a download with partslist and schematic for anyone who wants to try to build their own.

This is the second Aqua Puss Mk1 I built, the first with my own PCB.

(this one actually has the first version of my PCB, which required two jumpers to work because I forgot the connections on the schematic. V2 shown above now has more generous distances between the components and works right away). 

My third version was built with some tantalum capacitors instead of the electrolytic caps near the BBD to allow for a double delay board daughter board that plugs into the original BBD socket. I traced sabrotones dual delay board and made my own PCB that I got fabricated. It works as expected and calibration is not as difficult as I thought. One simply has to calibrate with one BBD as usual and then plug the BBD into the first slot on the double delay board and calibrate the second BBD with the remaining trimmers the same way. 

This is the finished product. I decided to rename it the Acqua Vitae to avoid issues with copyright and underline it's not a straight "replica" like the FSB board, but rather a reinvention inspired by the original APmk1. It sounds noticeably warmer/darker with two BBDs but the delay time more than doubled (I'm guessing due to the additional darkness clock noise is filtered slightly better and the BBDs can be adjusted for longer delay times). I guess the tantalums in the signal path also darken the signal slightly.

I'm currently working on a version with modulation and a few more quirks that I will talk about in another post.

Building A Klone Of The Klon Centaur

This post is long overdue, since I already posted about building the Klon Buffer in 2012. This is around the time that I built my Klone as well, but I never made a post about it.

Back then I was obsessed with reading about the Klon and how people would pay $1000 for the right one (this was before the KTR, just after it was reversed on FSB). Now Klones are ubiquitous and even major pedal companies like EH and MXR have their versions, sometimes even in a tiny 1590A format.

When I build mine it has to be perfect, I thought, and since Analogmike swears by carbon composition resistors for his Sunface, they must sound better, so I'll build my holy grail pedal with carbon comps as well. Those are the big brown cylindrical ones. The modern KTR is built with tiny surface-mount resistors that are used in many modern electronic devices. Go figure.

I found this vero layout project on FSB (click the link for the full file):

Back then I didn't do my own layouts and didn't have a schematic. I simply trusted it would work. And luckily it did!

The pcb turned out nicely, but the offboard wiring was a mess and I "insulated" it with tissue paper (real classy). It only had a battery snap, no power jack, and would whine loudly when the battery was empty, because of the voltage doubler. It wasn't really reliable and I lost interest after a while and lent it to a friend (who kept it for a few years). A few weeks ago, I remembered the pedal and got it back. Now that my pedal making skills had improved a bit, I realised the PCB could be easily salvaged and the pedal "refurbished" to make it more reliable and easy to use. So I took it apart, drilled another hole in the side, cleaned the enclosure, flipped the pcb around, and changed the switch (optoswitch) and wiring (no battery now).

Looks and plays great now!

Building A Clone Of The Crowther Hotcake

A friend of mine who is a musician from NZ asked me to build him a Crowther Hotcake because it would be difficult to get one in Europe.

I researched the cicuit and it turns out there are different versions of the Hotcake, which Paul Crowther has been building since the 70ies. Apparently the versions sound a little different and there are two schematics online, one of the 1977 version and one of the 2003 version.

The early version (1977) only has two knobs and a presence switch. The newer version (2003) has three knobs (Crowther turned the presence switch into a knob), but with a millenium bypass style switching circuit. I decided to combine both versions and basically make a true bypass version with three knobs. This is the schematic:

I made a PCB with Eagle but there is also a vero version over at tagboardeffects.

The final result looks like this (I made two, gave one to my friend and kept the other one):

Building A Clone Of The Analogman Sunface

About a year ago I decided to take this guitar pedal thing to another level, so I learned eagle, founded a company and started making my effects look a bit more professional. That was at the same time I discovered Oshpark and realised how easy it would be to design a PCB and get it fabricated for cheap.

One of the effects that I always loved building as well as playing was the humble Fuzz Face. Easy to build, difficult to get a great sound out of and very particular about its power requirements and place in the signal chain (always first!). I had built a simple PNP germanium fuzz face for a friend (my first pedal) and a Joe Bonamassa spec PNP Fuzz Face with russian germaniums. But they needed batteries, and I didn't want to add a power jack for positive ground when that could fry my other pedals daisychaining it.

Another Fuzz Face I have always been lusting after was the Analogman Sunface. It sounded great in those Gearmanndude videos and others. And there were different versions with different transistors, but they all sounded good. Another thing I liked was the bias/sundial knob, because that would allow me to get different sounds and adjust the pedal during different ambient temperatures (germanium transistors are finicky regarding changing temperature, Hendrix apparently put his FF in the freezer prior to recording).

So I looked at the schematic (it was traced and very close to a regular Fuzz Face), and converted it to NPN to play nice with my power supply and to be able to use silicon or NPN germaniums (Which I had bought cheaply).

And I made a PCB in Eagle. Oshpark accepts Eagle files directly and sends out 3 PCBs with world wide free shipping. They are very high quality prototype boards (one can unsolder components several times without damaging the PCB itself).

Next I picked up some mojo looking components (carbon comp or 1watt metal film, axial caps) and some NPN russian germanium transistors (I bought a box of MP38A, which fall right into the goldilocks zone for Hfe, low leakage and are very decently priced) and went to work.

The other thing I did is design a front plate, which is a PCB without copper traces (it only has the writing on it), which I also designed in Eagle. I called it SUCHAHARDFUZZ, since I named my pedal company suchahardman guitar effects, a pun on my name.

The end result is a great looking and sounding fuzz. I made two and gave one to my cousin for christmas. This fuzz face is NPN and thus can use a regular power supply with other effects in a daisy-chain, as well as batteries (though my personal pedal doesn't have a battery snap anymore). I also used an opto-switch which I will present in another post soon.

New website, maybe I'll resurrect this blog

I have recently - a year ago - rediscovered my interest in building pedals and decided to make this pedal building thing a side-business. I have started a website called suchahardman guitar effects. My Instagram account also shows a few things I've been working on since.

As this blog amazingly is still generating views even though the posts haven't really been updated in 7 years, I decided to write a little post linking my website just in case. Maybe it'll generate a few clicks.

I strive to build and create even more than before and shown here. I will try to write a few posts throughout 2019 explaining what I've been working on to maybe inspire and help people like my 5 tiny posts have been doing in the past 7 years.

Btw, I still make that booster pedal that was inspired by the Deep Blue Delay buffer. It looks like this now:

I also learned Eagle and made a few analog delays based on the Way Huge Aqua Puss and others:

Building A Clean Boost Inspired By The Deep Blue Delay Buffer

I had modded my deep blue delay clone for a volume control because I heard about volume drop issues, though I have none of them, but I really like the clean boost it gives me.

Unfortunately I barely use the boost because I don't want the volume jump when turning on the DBD. So I thought I'd try the buffers w/ volume mod as a standalone boost, giving me more flexibility for lead boosting, etc.

I extracted the buffer circuit from the DBD schematic including the volume control (which I upped to a 50k to give a little more boost than my DBD clone). The cool thing is, if this is turned to 0 on the volume, it simply acts as a unity gain buffer:

Based on that I drew up a stripboard layout (my first real layout, yay!). The goal was to keep it simple, not pretty, and to fit into a 1590A, because I believe saving real estate on a board on something as simple as a clean booster is of a higher priority. It turned out quite well, and there are no stand-up resistors, which I prefer:

  
This one is verified and sounds quite good! I really like it! Here is a picture of my finished build:

Building A Clone Of The Eternity (Burst)

After having been quite frustrated with my Tubescreamer-like SRV Special that was one of my first builds ever, i decided to give the old TS circuit another try. This time I chose the Lovepedal Eternity (which is a tweaked TS circuit) for several reasons.

The first reason was a discussion on FSB regarding opamps in SIP (single in line) format. Instead of the usual square look with 4 pins on each side, they have all 8 pins in one line, making the IC very compact in vero layouts. IvIark on FSB posted a layout for the Eternity Burst that featured a SIP-8 NJM4558 opamp:

Incidentally, I had all the necessary parts lying around, and since it was a pretty easy build, I decided to give this one a go. The Eternity is basically a TS circuit without input and output buffers and several tweaked values, making it sound fatter and more open. I managed to wire the board, drill the enclosure and finish the pedal in two afternoons. 

I used an Eddystone 1590B-sized enclosure (the original comes in a 125B, which is a bit bigger) and tried to stick to the original knob and LED layout. I like that look a lot.

A couple of interesting points:

• I found the 500kB pot for the gain to have an uneven spread. The gain would suddenly jump up at around 8-9 o'clock on the dial. I prefer a log pot here (500kA).
• The pedal is rather bright, i preferred a linear 1M pot for the volume. Because the volume control interacts with the output coupling capacitor, the 500k sounds much brighter than the 1M. The downside to this is, since the Eternity doesn't have an output buffer, it is influenced by whichever pedal comes after it. Because upping the volume pot increases the output impedance (ideally we want a very low output impedance) this dependence becomes more apparent. This is rather annoying so i resorted to using a 500kA and turning the tone knob way down (9-10 o'clock). Some Eternity versions have a 22uF output cap and a 100k pot. I might try that in the future.

I'm planning on finishing the enclosure. I'm not sure which color I'll choose, I guess a burst finish would be nice, but that would be a little difficult. The LED is a 5mm waterclear green superbright. The Eternity also comes in white so maybe I'll try that.

Building A Clone Of The Honey Bee OD

A week ago or so, I finished building a Honeybee clone. I went with the madbean pcb (discontinued) and bearfoot version of the circuit. The enclosure is a brush-painted Eddystone in gold/apricot with a adhesive decal and clearcoat on top. Here is a photo after the box was clearcoated. The decal was made full size including the knob, led, and switch locations.

As of yet, it is missing an orange LED and proper bezel that are still in the mail. Sorry for the rip-off font DonneR, but don't worry, i will not give this one away, ever.

Knobs are from Tayda. I prefer them to the originals actually. Those can be ordered here by the way. (TK-1124-6MM). They are 6mm knobs and won't fit the 1/4" shaft of regular alpha pots though. Here is a gutshot. 

That's about as neat as I can go, so far. Notice that I used 1n4148 diodes instead of the 1n4007 the original uses, as I socketed the diodes first while forgetting that the 1n4007 have thicker legs that won't fit the sockets. I might try to tack solder thinner legs to them later on.

Update (May 9, 2012): Finally completely finished this pedal. I installed an orange LED and changed the 1n4148 diodes for 1n4004 (i didn't have 1n4007s but they should be identical) and I prefer them to the 1n4148s. The 400X are smoother and compliment this pedal very well. I can see why Björn prefers them in this circuit.

Here's a picture:

Building A Klon Buffer

I kept reading the Klon's buffer is the best buffer ever and "makes everything sound better", etc. Curious as I am, i wanted to try this myself. I didn't need to source any parts except a 1590A sized enclosure and some jacks that I bought at a local electronics store. I decided to paint this one too and went with blue metallic. The layout I used came from FSB once again and was made by mcaviel.

My build looks like this:

I can't really say how the buffer "sounds", because it's barely coloring my tone. The most noticable difference is a very very slight volume drop because i used two 1k resistors in parallel instead of a 560k for R5. This won't make much of a difference though because a buffer is not something you switch on and off all the time, hence no footswitch. I probably don't have a large enough effects chain yet for it to make a difference in my signal.

Nonetheless, this is a highly recommend project for beginners because it's so simple. No need to drill for a foot switch and pots, four little holes and you're set. And they don't even have to be aligned. No battery clip nor LED.

Building A Clone Of The Deep Blue Delay

I decided to build something different than a dirt box this time. Everyone raves about delays and I have never played or owned one before. I kept looking for a simple delay with parts that are easy to source and inexpensive. The Deep Blue Delay, a digital delay based on the PT2399 designed by Björn Juhl, the owner of BJFe, caught my eye and I decided to build it. Being a member of FSB I quickly found the thread about the pedal. Being a beginner myself and never having tried building a delay pedal before I decided not to try to make my own layout for now and go with what's already there and build mictester's vero layout (you might've to sign up, not sure).
  

I also decided it was time to get away from the plain metal-box look of most of my pedals (I have two solid-color-powdercoated boxes, but that's also a bit boring). I thought about spray painting, but that's not a good idea in my apartment. I decided to finish the enclosure with acrylic paint and a brush and try the BJFe inspired look of labelling the box by hand. This is how the box looked after color and clear coats:

I know now that if i don't want this wavey look with the aluminum shining through, i should use a primer. However, in this case that look fit perfectly with the deep-blue, waves, sea, etc. theme. The finished pedal looks like this (this is the one from the header of this blog). I had to cut the vero board a bit and leave out the battery because the layout was pretty big and I wanted to fit it into a 1590B sized enclosure.

You might've noticed that there is a fourth knob that the original doesn't have. This is a volume control. I added a 25kB pot in series with the 12k resistor in the feedback loop, because I heard about a possible volume loss with the pedal in some instances. This proved untrue in my case (in some cases this is probably due to tolerances in the parts combinations), but the volume boost is a nice feature. Turning down the mix knob (taking the delay out of the signal) the clean boost is a cool feature to have. I changed the IC for a TLC2262, which sounds a little bit better on the cleans, but it's not a necessity. Here's the schematic including the mod i did: 

Building this pedal is highly recommend as it is a pretty easy build for a delay and is tons of fun. I sourced all my parts, including the PT2399, from Tayda because they have the cheapest prices and I've never had problems with them.

Update 03.06.13: due to some questions and issues about the stripboard layout, I would recommend to rather build this pedal with the layout Mark from GuitarFX Layouts posted here. It is verified and fits in an 1590B-sized enclosure including a battery.