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'm working on VERO layouts for the Blade VSC preamp and I'm also trying to create one for only the Mid-boost part of the preamp which I think is very nice!
Since I'm a beginner I'm learning as I'm going, working with bread board layouts and schematics and trying to create veroboard layouts from there.
It would be great if I could get some help with the layouts I'm creating!
The schematic for the Blade VSC preamp:
I've created this vero layout for it. I've verified the mid-boost part for...
I'm seeking for this pedal since a while. I only know it's a relative of the Roland AF100 BeeBaa (fuzz only, without the booster).
I was able to find a gut shot on reverb, and by roughly comparing it with a regular Roland BeeBaa schematic, I came to the conclusion that it shall be something like this.
PCB is double sided, so I can 't properly tell all the connections.
What do you think?
A guy who runs a component shop in Devon, UK, was selling bags of 400 NOS germaniums,.. some sold for over £600.
If you bought these, or know who bought these, PLEASE check them with a professional transistor tester that can detect internal shorts and bi-polar leakage (not a cheap tester off eBay), as one buyer has reported 41% were duds.
Anyone who did buy these can still talk to ebay (who are currently investigating) via the chat at...
Hi! I have an interesting device. I started working on drawing his schematic. Everything is clear. Give me time and I'll draw a diagram. If someone already has a scheme, we will cooperate. :horsey:
I recently got a LAL Green Monster, a super rare fuzz and long discontinued pedal by LAL.
Since I opened it to clean it a bit, I decided to take also some gut pictures.
Some notes to the pictures:
True bypass 3PDT footswitch
Pots: Vol 10kB, Sens1 10kB, Sens2 10kB, Sens3 50kB
Wiring: Green GND, Yellow OUT, White IN, Red +9VDC
Opamps are both UA741CP, and there are only 2 components which maybe are a bit tricky to track.
These look like 2 diodes: the black one in the middle of the board (I...
as high gain pedals that sound pretty 'amp-like' go, this is a better than average example. Anyone have any ideas what this circuit is? Of course, it's gooped, but I find it interesting that its a relatively small area that the goop obscures. In the promo video on the Emma website for this pedal, you can briefly see one getting assembled, and it appears to a really low parts count... a few SMD components and it looks like a single 8 pin DIP ic and a single can style transistor or similar...
Typical nice build quality from Barber. Sounds very nice.
Here's the Barber marketing copy:
The Trifecta’s classic three fuzz circuits are based off of the triangle style pi sound, the Jumbo Bender style and the Suppa Bender style with our boutique mods/magic and superior build quality.
I had never looked at the Jumbo or Suppa schematics before, but after checking them out, it makes sense. The Muff, and those two Bender circuits have an awful lot in common.
Seljetnoma kindly sent me some detailed photos of his Rockett Blue Note OD (thanks Frank), and I traced it with his help.
Looks like it's the same board and circuit as the Rockett Animal, with different component values, so someone might like to work out those values from the pic in the other thread and we can solve that one also.
If someone does it and wants to send me the values I can easily update this schemo to the new values, and post it in the other thread.
First post from this long time lurker. I've had this bass distortion pedal for many years, but I still haven't seen anyone checking out its circuit, so I decided to try. It's handmade in Norway by the small pedal builder OnkartGromt. Info:
Getting the PCB out of the enclosure was quite a challenge, at least without de-soldering the DC input and the two mini-switches. But I wrestled it out and took decent pictures of both sides. Figured out the circuit, whose design is far from a typical TS...
I like the sound of this one, sorry about the crappy pics.
I can try to take better ones when i get the time.
Forgot to take pics on the potz boards other side...
Looks like charge pump, relay switching, 3 smd jfets, two 5k trimpots for the jfets.
I've been trying to figure out how Way Huge did the Series/Parallel toggle switch in the Camel Toe, either in the original or reissue. Has anyone traced that part of the circuit?
I'm guessing that this topic is unspokenly off limits because there is absolutely nothing in search results for it, here or anywhere else. If I am breaking some unspoken code here by asking please just say so.
It seems to me that no one will trace a D*ellist or any other Kin*tone pedal. Perhaps out of respect for the original maker, which if so, is pretty nice. I'm just really curious about it. I've been looking for some indication of what the mods are to the TS circuit that makes it so...
So. There was one of these for sale as a defect unit on a local forum. Description said that there is some bad contacts or something , but the price was realistic. I already knew this one will be gooped, but went ahead anyway. Got it in the mail and ripped it open as soon as i found the time to do so. Sure enough. Massive loads of clear and black goop. The only real issue with the unit was the standard 3PDT stomp, which didn't work properly. Now, i had it open on my desk and... Well. The pedal...
This is side A of the Duellist dual pedal released as a standalone effect. It's got a couple of changes from what's inside the Duellist, but overall pretty close.
king_tone_soloist_trace_schematic.png
Basically a stripped-down Tube Screamer (Son of Screamer) with several tone options.
Full tracing journal: (includes Duellist and Heavyhand)
This is side B of the Duellist dual pedal released as a standalone effect. It's got several tweaks & added features from what's inside the Duellist, so not a direct clone, though pretty close.
king_tone_heavyhand_trace_schematic.png
Basically a Bluesbreaker/Prince of Tone with a clipping diode switch and a few different pre-clipping tonal options.
Full tracing journal: (includes Duellist and Soloist)
Hopefully this is in the right section. Been recommended to post this here from r/diypedals.
Basically, skip to the bottom to avoid the preamble. But for anyone interested in the background, I know this guy is a scumbag with a history of terrible customer service - but for the longest time I gave him the benefit of the doubt and bought his stuff because his work looked and sounded good.
That was until a couple of weeks ago when I gave one of his pedals that I love, a...
I spent a few days with this pedal and took the opportunity to trace it. Didn't triple check but this time I didn't do it at 2 in the morning so it should be alright !
I don't know if it's a clone or modded clone of something existing, but it'll sure remove the wallpaper of your house in a minute if you want it.
It's LOUD, has TONS OF GAIN, and of course, is very noisy !
I was merely tapped to post this, and I was in no way involved with the reversing or drawing the schem. I don't want it to seem like I am trying to take credit here. I'm just the messenger. :mrgreen:
This has been played around with a bit on the breadboard, and it is believed that the schematic below is in fact an accurate rendering of the BJFE Dyna Red Distortion. The schematic was donated to FSB anonymously. Apparently this version was...
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