PedalPCB Range Finder

 Just because rotary switches are cool...😎

Schematic avaiable at PedalPCB.

 

 

Boss FZ2 Boost/Eq & PedalPCB Hyped Boost

 Boss FZ2 has a very powerfull boost setting which is great for driving tube amps. It also has a powerful eq. Some people requested this, not wanting to build the whole FZ2 circuit which is quite big!

So here is two layouts, one stock with a FET input buffer and a discrete FET/PNP BJT op amp. The other one is Hyped Boost,  the "cheat" version with a dual op amp for the input buffer and boost.

 

 

 

 

Dunwich Amplification DA-120 Overdrive V1

 Here is a layout of an early version of D-120 OD. It is basically a J FET conversion of a Matamp GT120 with some interesting tweaks like diodes connected to the sources for some of the transistors. It also have a clean blend /summing amp circuit. The original had fixed resistors across drain and V for Q1 through Q3 but I replaced them with 50k trimpots for easier bias setup.

Note that the more recent revisions is a completely different beast circuit wise with a rotary switch, MOSFET transistors and a quad op amp.

Loundsberry Nigel Touch Overdrive

 Schematic avaiable at FSB.

Subbed the 6,8k Drain resistors for a couple of 50k trimpots for easier bias setup.

 

Analog Man Astro Tone Fuzz

 Analog Man's take on the old and quite rare Sam Ash Fuzzz Boxxx/Astrotone Fuzz. Bigger input and output caps and a resistor swap at the tone control should make this a different animal compared to the vintage pedals which suffered from lack of bottom end and a useful tone control. Various transistors has been used, often in "black dot" casing. Try NPN silicon with hfe 150-400. 

Analog Man Prince of Tone

 Requested a few times so here it is. Based on schematic from PedalPCB.

TC Electronic Dark Matter Distortion

 Per request. A few things changed compared to the schematic; Bass ctrl outer lugs swapped, the two parallel 220uf power filter caps changed to a single 470uF (but you will get away with a 220uf or 100uf...), series protection diode added and bypass mute switching is omitted. SCHEMATIC.

Point Reyes Kuiama Fuzz

 This was a request. here is a change to try out your low gain and low leakage soviet transistors in a Tonebender Mk. II. There is a trimpot for each transistor and an onboard voltage converter for daisy chaining. The schematic specifies MP40 for all transistors but I bet other should work and sound good as well like MP41, MP42, MP20, MP21, GT308, GT402 etc, etc, etc. Just mind the pinout for the GT series transistors. Vero - Point2Point Layouts has a spreadsheet for for most NOS russian transitors HERE.

You can also build a Marshall Supa Fuzz by upping the 5uF (....or4,7uF) capacitors to 10uF or a Vox Tonebender Mk. II by upping both 10nF caps to 15nF.

Catalinbread CB30 V2

 Recently traced by Aion Fx, here is the 8 transistor version of CB30. It is supposed to be a very good sounding Vox-esque overdive. With 8 transistors it was quite difficult to keep the size down but it will fit into a 125b with no problem.

Schematic, tracing journal and more info at Aion Fx.

Dunwich Amplification Bass Overdrive (DIY)

 Based on Boss ODB-3 but with lots of added controls and switches!

Schematic and BOM at OSH Park.

Fuzzrocious Rat Tail V2

 Evilarsen traced a unit from 2015 last week and not surptisngly, it is a Rat derivate. However, the "One" and "Two" controls should give you more tonal options than a stock Rat.

Dunwich Amplification Wizard Fuzz - Big box version

 Here is a heavy beast from Dunwich, traced by Vince69 over at FSB.

Dunwich Amplification Apostle (DIY version)

 Schematic and BOM avaiable at OSH Park.

Looks like a very interesting Matamp/Orange amp emulator running mostly at almost 36v with an active speaker simulator(?) and a "Mode" switch for two tonestacks. Each being at different locations in the circuit.

Dunwich Amplification DIY HM2 "2021 Edition"

 Another take by Dunwich Amplification on the mighty HM2 circuit. Just released as a DIY project at OSH Park it has some tweaks all along the circuit compared to the stock Boss schematic. It also has a built in active clean blend circuit and switches for both hard and soft clipping diodes.

Schematic and BOM can be downloaded at OSH Park. 

 

 

...and a layout with "Dope-Ass Lower-Tuned" values for the gyrator eq section requested (?) by MTK.

These values were calculated by Ryan from Heard Sound Circuits and makes things sound....more evil.

(Low: 62,48 Hz, Mid: 716,67 Hz, High: 1065,5 Hz)

 

 

 

 

Demo time with MTK!

 

 

 

 

Dunwich Amplification CTG (DIY version)

 Here we have a "little" monster layout for a DIY project that Dunwich Amplification just released at OSH Park. It is supposed to a emulate a part Al Cisneros of Sleep bass rig. It is basically three circuits in parallell, a DOD 250 Pre Amp, a Boss DS1 and a clean J FET boost with a James tonestack.

Schematic and BOM can be downloaded HERE.

 

 

GuitarPCB Plexi Plus

 This was a request. Based on Ramble FX Marvel Drive but with some tweaks.

Schematic and info HERE

Zvex Fuzz Factory

 How did I miss THIS one?😕😖

Dunwich Amplification Olde Dirty Bass - 125b/Custom version

 This one shares almost the same footprint as the earlier "Big Box" version but component values have been changed all across the circuit. No major changes except for the "bass boost" cap/resistor at the Cut switch and a few extra caps and resistors.

Schematic is avaiable at FSB.

 

 

Fulltone Secret Freq

 Based on schematic from PedalPCB.

Seppuku Fx Memory Loss - alike

 The layout is based on a quite diffucult-to-read schematic found at Mod Wiggler forum.

It may contain some errors and there are few question marks next to some of the pots and one of the caps, so some "trial and error" might be necessary to get this thing working as it should. Also, the "Filter" switch looks like a feedback switch for the LM386 IC and it appears to be a panel mounted push button switch but I guess a SPST toggle switch can be used as well.