The research folders: please contribute whatever little piece of information you might have on stompbox circuits new or old. Discussion should be civil and to the point.
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Vintage Stompbox Corner ( ... - 1975) Discussion regarding early stompbox technology: 1960-1975 Please keep discussion focused and contribute what info you have...
Boutique Stompboxes dissected... General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
DIY Projects 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. Subforums:
Printed/Published Online Designs,
Original Tracer Layouts
Analysis Requests Folder Before you launch a request, please a) search the forum; b) search the web and c) share whatever you did find and where you searched.
I've recently noticed that Tim's great site at is coming up as a virus, trojan horse, or other bad things in my browser. So I thought I'd grab all the circuit images and zip them up for safe keeping. I have emailed him in the recent past, but there has been no reply. :hmmm:
Attached is a zip file of ALL of the effects circuits from his site.
Rock on, and may the creative spirit of the Great Escobedo be with you always. :thumbsup
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
This section is devoted to circuit analysis . This means...
requests for schematics or layouts will be moved the the Request section
messages about your sick puppy or your new Android powered phone should go into the FSB Café
debugging questions will be moved to the Workbench
useless post (containing no extra information) may get deleted to preserve the readability of the thread.
you should check whether a thread exists about the unit in question, and add your info in that thread.
you...
I've been playing this for a few years and love it. By far my favorite Belton driven verb. I traced it out and here are my findings. I have a few components I've done my best on but list them if anyone knows better. I built it on a breadboard and it sounds identical to me.
D2 measured at 0.6vf. Since its just a SHO boost I'm assuming its a 9v Zener.
C14 measured at 100u but i did not desolder anything. That seems crazy large. Maybe you can read the code on the cap...
2 different units here. the first one had a blown CA3280 and a substitute ECG VR. The second unit is very distorted. looks like the VR was replaced with an unidentifible device. Schematic and layout to follow.
I've been planning to clone this pedal, and I have a general idea of how it works and could probably spin something up (though I'm a beginner in electronics. I only have first year college level of physics knowledge), but I would like some guidance and pointers from people better than me, or better yet, a tracing of the guts. I might still modify it to fit my personal uses, but covering the initial ground on would be good.
Dear all,
A friend of mine have a Darkglass Tone Capsule. Actually he send me a photo of the device.
I asked more Photos with more details.
Somebody is interested to help me to tracing this electronic?
Quick search tells me there's nothing on these yet...
Although it's difficult to tell from a yt clip, this actually sounds reasonably like an FZ-1A:
A couple of gutshots have surfaced, and to me looking very Bosstone sans clipping diodes (which you can add yourself) and a couple of free pads for a more bass-friendly response. Seems Jack Orman independently concurs from the youtube comments...
Whatever, it sounds pretty good to me and cheap enough to snag out of curiousity.
Hi does anyone have the schematic for the Twin Tube Blue SFX-11 or know the differences of components other than the tubes from the SFX-03 schematic . It looks like they use the same pc board.
Thanks PCB.
didn't bother drawing the switching layout but its not too hard to figure out. effect input is grounded through the 47 ohm and swaps a ground connection with the status LED on bypass.
Here are some pictures of my personal Dunwich Wizard Fuzz #85. As it's quite a rare and now unobtainium unit, I decided to trace it.
I carefully took it apart, unsoldered all components, measured the resistors with a multimeter, measured the transistors with Atlas DC55 and noted everything down.
Then I traced it using Illustrator and drew a schematic on Kicad. I made sure my schematic doesn't contain any error, as I redid the original pcb layout on Kicad.
Is anybody interested in tracing the Aguilar Octomizer?
I have one a long time ago, and tried to trace it myself, but don't have the time and knowledge to do it.
I degooped the little secret part of the PCB, but I'm afraid I scratched too much and deleted the marking on an IC. And there is a smd diode broken too, that I think it's a dual smd diode, kind of 1n4148.
I can messure any resistor or capacitor, or desolder too.
Here it's a shared folder with...
I recently built a Boss CE1 clone with all original transistor types except for one sub which is the KSA992 for the 2sa493. I used the UA726 TA7136 to TL071 adapters with TL071s installed. 1458 for the the LFO and the DIY synth MN3002 to TDA1022 adapter board. The rate LED works in both vibrato and chorus mode. The Peak LED works properly. High low switch works properly, but I only get a clean guitar signal in bypass and effect mode. I get very little guitar signal when I use the stereo output...
I have both a 80s BK garage made Tubedriver and his latest reissue. After trying countless tubes I have discovered the NOS Telefunken ECC81 to give the best results. I have 3 of these tubes and they are extremely consistent providing great tone, mojo, and character to these pedals. To my ears the difference is astounding in both pedals. Yes, they are expensive but do not disappoint. Has anyone else discovered the same result?
the original 1176 is crazy expensive these days. i thought it'd be pretty elaborate, but looking at the original 1176 schematic, seems like a couple JFETs and a some BJTs. presumably the pedal removed the 5532 differential input. and the marketing doesn't mention any transformers so i guess they skipped that too. runs on +30V and -10V, nothing too crazy.
they're charging $359 for a pedal clone, and i bet most of that price is just based on the...
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