Original effects with schematics, layouts and instructions, freely contributed by members or found in publications. Cannot be used for commercial purposes without the consent of the owners of the copyright.
Original Tracer Layouts A collection of original layouts for vintage guitar effects. If you want to build real replica's of vintage pedals, this is the forum you want to look at.
This page tries to keep the available projects indexed.
If you want to share files to build a effect that's not yet (widely) available, it would be a pleasure for us to host it here.
The projects should be verified , though, and at least contain a schematic , some layout file (transfer, vero, perf) and a component layout file .
Incomplete or unverified projects will be moved to the Projects in Progress folder: if you fall upon such a project, please report the...
For a long time I've felt guilty that my pedal board didn't include a compressor. Finally, after about a year of breadboarding, I have produced a circuit that can take on a Dynacomp and win , boasting:
Up to five times more headroom than a Dynacomp
Less noise than a Dynacomp
Same available sustain as a Dynacomp
Fewer parts than a Dynacomp
Cheaper than a Dynacomp
Feedforward side chain
Possibility for all five controls
Fits in 1590B
Millennium bypass
I've always liked the tone benders, and thought that it would be fun to build a few with differing component choices and various transistors. Over the last few months, I've made about twenty of the things - all slightly different. I've extensively played through them, and have chosen the two or three that sound best (to my ears). The very best is shown here - it's a smoothed silicon bender, and just sounds great! All the other prototypes were put into diecast boxes and given to musician friends...
You'll all know my hatred of the crappy TPDT and similar footswitches.
I still have customers who insist on true bypass and a solid copper path bypass . Buffered bypass is almost always better, but just to satisfy these (very wealthy / influential) musicians, I frequently use bistable relays. Many players are deeply distrustful of mains powered effects, and (perversely) demand batteries that last for many hours. I also have a large supply of really sturdy SPDT footswitches (like the old...
I'm posting this here for the benefit of the community. It's my own idea of what a Rockman headphone amp should be like, made with modern, easily available components. It is intentionally not an exact clone of any specific Rockman model, because my aim right from the beginning was to make it better. I'd say it's closest to an X100 without the Echo part, but with a nice feature from the Soloist (the Doubler mode), and another really nice feature from the Ace series: single 9V battery power. I...
After showing you a couple of not-clones, here's a more original circuit I'm proud of. It's a parametric mid frequency eq with also bass and treble controls.
I think equalizers are very very powerful effects, altough they shouldn't be overestimated when post production is an option. Usually diy-ing a graphic eq is hindered by the amount of controls needed for a decent amount of bands, being them pots or worse, sliders. So I wanted to look for an alternative, and one which didn't feel like a...
Here is the second installment of my bass amplifier series - the Ampeg SVT in 9v pedal friendly format.
Plug this pedal into any high wattage power amplifier and experience the Super Valve Technology sound without tubes :wink:
This design is based on the original Ampeg SVT but with the 5 frequency bands mid boost / cut rotary switch used in the later SLM MkII model.
I left the bass cut option in the ultra bass switch control out as well just as they did in the MkII :wink: However I modeled the...
I apparently have a thing for delay/reverb circuits. I decided to do a true stereo reverb using PT2399. It's based on my Spare Room design, but it takes advantage of of the ability to cross feed the left and right signals and to do some cool cross channel-dependent modulation. It's not a small circuit by any measure. In fact, it may be the most complicated single knob pedal in the DIY world, but it's a fun one. The schematic is too big to post at reasonable quality here, but I put the short...
I have built an old favorite from this board, the Highway 89 from Doug Hammond. This pedal kills. The tone is rocking and ballsy and the clean up is great!!
I was trying to let the other guitar player in my band use it and I discovered a really strange issue that we have tracked down to a power issue generally but do not know specifically what the problem is.
When it is powered from my old dinosaur SKB pedalboard the pedal works fine, as it does when I use a single Boss PSA 120 style...
Here is my latest original build. The enclosure came from a 3-knob AliExpress zendrive clone kit by Landtone. I first used it for a DIY Friedman Golden Pearl, which is why there are two extra switches. It turned out that keeping these let me design a bit more flexibility in.
MOStache schem.PNG
It's a fairly straight forward amp-in-a-box type of deal, but here I'm using P-Mosfets (hence the name) instead of Jfets because they are much more...
Hi all, I am building a dual overdrive. I would like to include effects order toggle switch to change which effect is first. I am clear on how to do this using a 3PDT toggle.
I would also like to be able to insert an external pedal in between the two circuits. I am not clear on how to do this and still retain the order switch. I could do it manually with two independent circuits, individual input and output jacks, using a switching jack and patch cables to insert an external effect AND/OR...
Hello, I am posting this to get feedback on my schematic before building a vero of it. I modified an HM-2 schematic from Aion FX, of which is included in their build docs for their Graviton clone with features inspired by the Darkglass B7K. I inserted a clean blend and changed the 2 band Gyrator EQ to a four band. The frequencies are 80hZ, 500hZ, 1.5KhZ, and 5KhZ. I also changed the reverse polarity protection from a single 1n5817 diode to a BS250P P-Channel MOSFET and 1n4148 diode pair....
Some ppl on amazon keep griping about this pedals lack of proper wiring instruction, it is a beginner level tho and so for beginners a wiring traced diagram sometimes helps which is what i am sharing.
The branding is Landtone but amazon labels it as TTone for some reason, They also claim it is a professional analog circuit (¿) I put it all in the title hoping people googling it can find it using those key words. It comes from China & works well to my tone deaf ears.
So Experimental Noize came out with a DSP tailored for pedals.
However the FXCore is not as easy to incorporate in a circuit as the FV1 is.
That's why I made this very compact devboard (only 30 by 43mm). Also, it's breadboard compatible for easy prototyping.
It takes care of the audio conversion and helps to simplify the program selection.
There's a small microcontroller that converts an analog input into a 4bit selection code for the DSP.
This way any pot or switch can be used to select a...
Did this one a while back but thought I'd share here. I took the basic bones of the Deep Blue Delay (changed some filtering values), added a variable LPF on the delay output (via trimmer/cap), added a second Delay Time control with a slow transition when switching between Time 1 and Time 2. It works similar to some versions of the Toneczar EchoCzar how it does the glide between Time pots. Probably more of a curiosity than something you'd actually use all the time, but it's fun to play around...
Hi folks
Merry Christmas to all :hug:
Here is a very simple but extremely nice sounding discrete bass guitar preamp for you all to build. Current draw is around 80uA :!:
I recently wound a Music Man style alnico bass pickup - (low inductance but series connected - 3500 turns of 41 awg polynylon per coil :wink: ) and i needed a preamp for it. Everyone seems to be going crazy for the Aguilar / Sadowsky two band bass preamps and i have seen a schematic for the Sadowsky on the web, but thought i...
This build was a bit of an accident. I recently built a Phase 45 with JC Malliet's mods. The original concept was to fit the entire circuit including the pots on a piece of 9x37 hole perf. After buiding and testing the main board I wasn't really happy with the quite subtle phasing. All that hard work wasted? No way was that going to happen - so I cludged in a further two phase stages on a daughter board for a deeper phase effect. I never would have been able to squeeze a Phase 90 onto a board...
I like to present an overdrive / low gain fuzz—a lockdown project:
Starting from a fuzz face with lower beta germanium transistors, a fuzz circuit was tweaked to lower gain, softer clipping and the ability to handle (fat sounding) humbuckers:
schlager_fuzz_realized_en_grosz.gif
Low cut / mid boost including low cut control was inserted before input—to allow using guitars with “fat” pickups.
Low cut condenser value / low cut frequencies could be...
Hi folks
As promised my version of the KORG CX3 1980's portable organ Rotary Effect.
This is definately not a project for beginners ( not another fuzz face or thuper hard on :wink: ), but if you are up to it, you will be rewarded with beautiful Hammond Leslie speaker cabinet type tones.
I have kept it as close to the original KORG circuit as possible, with the following changes - an additional n channel jfet buffer at the input, a simpler fast/slow speed switching arrangement, and add on...
here's a little design i threw together based on a neat little digital delay chip i found on AliExpress while looking to build a vibrato with a better frequency range than analog can provide.
its a fairly standard chorus/vibrato-with-blend type of deal, nothing super novel or innovative, more a proof of concept than anything. i've just borrowed the LFO from the VB-2 since i wanted a sine wave. and since it also had its own precision Vref supply, which i like, so i could keep it isolated from...
Do you remember the old-fashioned way of doing bass compression? It used an LDR across the volume control illuminated by an incandescent lamp across the speaker terminals! It was a simple method back in the 60s....
This compressor is almost that simple! It uses a handful of cheap components (I built one for £9 including hardware!), but works really well. Guitarists who've tried it often ask Is it on? , but miss it when it's off! It's quiet, and has good squeeze without the gain-change...
Hello,
since years I am using my own pre-amps which I box into either Eddystone 26908PSLA or Hammond 1590C enclosures. These I place on my pedal board, they run in the loops of my Line6 HX Effects. By that, all I need is a cable from my guitar to the pedal board, 4-wire method around HW Effects on the board and finally one cable from my pedal board to the power amp. I had since years the idea to build a Class-D power amp to get rid of the heavy Fender Bassman I used for too long now as power...
A fun variation on the classic D+/250 style circuit that nobody asked for. I like the original but wanted a little more flexibility from it.
2500.PNG
IC1 is a precision Vref supply which I like to include when I can.
IC2 is a super useful variable capacitance multiplier, borrowed from the page on gyrator filters at you can read more on it there. Here's its used to get a Timmy-style pre-clipping bass control but by virtually changing the capacitor value in the feedback network, as opposed...
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