Build Reports

Showing the 10 most recent build reports. Submit yours →

Zeroman
Score:
-2

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Klon KTR – If I could only get it back

Project: Refractor (Klon Centaur / KTR)
Variant: Version 2

Build description

I built a Refractor (Klon KTR) with BAT41 Schottky Diodes. It’s a fun build, pretty dense component wise, but not as complex as say the Lab 5 Preamp project. Drilling the enclosure was forgiving once I scaled the drill diagram correctly.
Turning this beauty on was a game changer. I’ve never found “that sound” so easily on an OD. I was so excited, I shared it with a friend.
He tried it, loved it, put it on his board, and said, “It’s the best OD I’ve ever played with my rig.”
I get the sense I’m gonna have to build another one ’cause the first one has been claimed. Did I mention my friend is a Pastor!?! Exactly how do I get it back from God’s called clergy!

Device-2
Score:
1

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Korg SDD3000 Preamp Clone

Project: Eclipse (SDD-3000 Preamp)
Variant: Korg SDD3000 Preamp

Build description

Great project! Since I finished it, it become one of my always on pedal! With a extremely subtle compression and boost in a kind of sparkle high end and hi-mid range. Put it after your mod or time based pedal it’ll enhance your wet signal. Forfot to mention it: IT HILARIOUS LOUD! You might think it gonna blow your amp out!

The NKA0515SC might cost a bit but definitely worth it! Also I built it with Philips mrs25 series, Wima and BC caps, made it reliable and clear sounding.

There’s no any problem with the project, also the quality of the board is extraordinary.
If you track back the Korg’s engineering manual, you;ll find that the schematic tracked correct and reasonable.

Would built another one for my pedal set up. Highly recommend for anyone eager for a SUPER LOUD clean boost without any bothering mid coloration.

Modifications or part substitutions

I ended up taking off the output level pot, since anyone using this preamp, including The Edge himself would definitely turn it all the way up, and control the headroom & volume with the input gain and boost level.

Nam Dinh
Score:
2

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Nimbus Overdrive

Project: Nimbus (Maxon OD-820 Overdrive)

Build description

Built up bone stock, with a custom UV printed enclosure from Pedal Parts Plus

Samuel V.
Score:
-1

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Power Boost

Project: Plasma (Colorsound Overdriver)
Variant: Colorsound Power Boost

Build description

Ok… to start off, I screwed up this build. Or shall I say happy accident? I intended to build an overdriver circuit, but when I made my bill of materials, I didn’t realize I was reading off the Power Boost page until after I finished building. I also forgot to order trimpots for my build. Oh man, that’s bad. I happened to have some 100k trimpots on hand and I just threw them in. They did the job, but they were pretty difficult to adjust for biasing since a little tiny twist is a pretty big change in resistance for a 100k as compared to a 10k. Anywho, it still worked. I used BC-109 transistors and I built it into a 125B enclosure with the included 1590 drilling template. Small bear messed up and sent me 1k linear pots instead of the reverse audio taper pots. While I wait for them to resend me parts, I’m using the linear pot that they sent me by mistake. It’s still pretty damn good.

So yeah, it was a happy accident coz I like the idea of having an 18V boost pedal. I haven’t yet used 18V with it; I am super happy with the sound of it using 9V. It’s like having a fuzz face but with a lot more control over the gain. I can make it sound bright or woofy. I can dial the gain down low and get a pretty sweet boost or crank the gain and get a growly fuzz. It interacts very well with fuzz pedals. It’s a really awesome effect!

Black Octopus Pedalworx
Score:
8

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DOPAMINE OVERDRIVE based on the Klon Centaur circuit.

Project: Refractor (Klon Centaur / KTR)

Build description

Materials:
01. Xicon 1% metal film resistors.
02. Kemet 5% MLCC (C0G)
03. WIMA Box Film 5% or 10% if 5% unavailable. TDK/EPCOS and Kemet box film
also used for less common values.
04. Nichicon Fine Gold electrolytics.
05. Mill-Max IC sockets. Gold plated pins and sockets.
06. Texas Instruments Op-Amps
07. Microchip Charge Pump
08. Choice for diodes was very involved. Based on extended listening and
testing. I took the top 5 in sound and tested the forward voltage of each and
every diode. No assumption was made. Looking to closely match the original
spec of 0.35v. The diodes were matched in pairs to the original spec and to
each other +/- 0.03v. The diode that most closely matched the original spec
also the one that sounded
best to my ears.

Quality control

The principles of process control, root-cause analysis and constant vigilance. All
were utilized throughout these builds.

All resistors, diodes, box film and electros
were all tested with a Fluke 17B+ Hand Held Multi-Meter (HHMM) for both
indicated value and tolerance.

100% of the solder joints were examined under a digital microscope and re-
flowed on the spot, if needed.

Modifications or part substitutions

01. Output pot changed from linear-type to logarithmic-type which more closely mimics
the way the human ear appreciates sound.
02. The diodes, see below.

Samuel V.
Score:
1

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Orange Crush Fuzz

Project: Corvus (Op-Amp Big Muff)
Variant: "Modified" Tone Control

Build description

I made my own bill of materials with Mouser. All resistors are film and all capacitors are Panasonic or TDK. Build was pretty easy. My first build was a Blueshift chorus, so by comparison, all the others are pretty easy.

I used the standard old instructions to build this pedal, which used the Hammond 1590 enclosure. My complaint about it is that there is no room for a battery option. I printed out the same 1590 drill template layout and I put it on a 125B enclosure. No mods or need for improvisations. Putting the existing drill template onto a 125 enclosure gives you enough room for a battery. I happened to not have a battery socket available during the build, but it’s easy to add later. I built two cerulean circuits with the old 1590 layout onto 125B enclosures with the same success. There is definitely room for a battery if you want it.

I used a green led and green knobs on a orange enclosure. Resembles an orange crush or a pumpkin 🙂

Sounds awesome!

Modifications or part substitutions

The standard 4k7 LED resistor left the led way way way too bright. Maybe because it’s green light and our eyes are more sensitive to it… I changed the 4k7 resistor to a 10k and it’s less bright, but still very bright. I might change it again to a 20k later.

Yaniv
Score:
3

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Cirrus st9

Project: Cirrus (Ibanez ST-9)
Variant: St - 9 + secondary clipping

Build description

Built the standard st9.
Added asymetrical clipping using ba282 which gives an option with bigger headroom. Not that it lacks any 😉
914 are the other diode array.
Sound is superb. So are the pcb and docs.
Thumbs up!!!

Modifications or part substitutions

3 ba282 ala dynamic overdrive style.

TylerNixon
Score:
-2

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Love that Zen state of mind

Project: Azimuth (Zendrive)
Variant: 125b pcb version

Build description

This is my favorite pedal to build for some reason. This is my 3rd or 4th Zendrive I’ve made. This one has no real mods. Just build like the 125b sheet said.

TylerNixon
Score:
-1

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125big-muffin

Project: Halo (Big Muff Pi)
Variant: 125b enclosure version

Build description

built it up using suggested component values. Genuinely the BEST pedal PCB’s I’ve ever used! I’ll continue to buy boards from aionElectronics. I used some cloth tape to keep the transistors in their sockets.

Modifications or part substitutions

I jumpered the switch section because I didn’t have an on/on/on switch. But I will be getting one in there shortly.
Made this build a combo of one side azimuth and the other the Halo

Coltonius
Score:
6

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Throbak-style Overdriver

Project: Plasma (Colorsound Overdriver)
Variant: Throbak spec

Build description

I built this to Throbak spec but realized the C1k Gain pot was far more effective (as suggested in the build docs). I used 2N2222a transistors but also liked the sound of BC108 transistors, so I socketed Q1-3 to switch back and forth easily!

Modifications or part substitutions

– Throbak spec with C1k gain pot