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.
Friday, 28 May 2021
Friday, 21 May 2021
Thursday, 20 May 2021
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.
Wednesday, 19 May 2021
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)
Tuesday, 18 May 2021
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.
Monday, 17 May 2021
Sunday, 16 May 2021
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.
Saturday, 15 May 2021
Friday, 14 May 2021
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.
Monday, 10 May 2021
Friday, 7 May 2021
Death by Audio Super Fuzz War - Fuzz section
Deadend Fx just traced this rare beast and released a PCB for it. Go and get it!
If not, here is a couple vero layouts for the fuzz section. I will upload the Boost section once I can wrap my head around some of the switch connections....
There are two layouts, one stock the with internal 8-pole DIP switch and one with all switches converted into 8 external SPST toggle switches.
Schematic HERE.
Unverified stock version
Monday, 3 May 2021
Spaceman Effects Apollo VII Overdrive
A bit modified compared to the schematic to keep it 1590B friendly. The relay bypass switching is omitted and so is the bicolour LED indicator. The circuit itself is quite "normal" compared to other Spaceman circuits and there is only one odd part; TLE2426 which is a precision virtual ground regulator. Layout is based on schematic avaiable at Deadend Fx.
Sunday, 2 May 2021
Mad Professor Blueberry Bass Overdrive
This is basically a higher gain version of BJFE Blueberry Bass OD since it has an added pre amp stage (Q1). Note that originals had the now obsolete BF244A transistors with DGS pinouts. I changed the pinouts for more accesible transistors. 2N5457s should bias up fine and sound good.
Saturday, 1 May 2021
Friday, 30 April 2021
Paul Cochrane Timmy V1
This one has been requested for a while. There seem to be several versions of this circuit so I guess we should start with V1? There is several schematics online, all of them have different wiring for the Bass and Treble controls. So the lug numbering may need some corrections.
Spaceman Effects Rumble Fuzz w. Deadend Fx "Gollum" mod
The stock Rumble Fuzz suffered from not being loud enough. Dead End Fx decided to take care of that and added a J FET booster after the Volume control (it is labelled "Fuzz", not sure why....).
The layout below is verified and this is now a loud, hairy, air moving fuzz indeed. I used a BC109C (hfe 650) for Q1 and a metal can 2N2222A (hfe 200) for Q2.
Thursday, 29 April 2021
Spaceman Effects Polaris Resonant Overdrive
Had an unverified layout in the library that I was quite unhappy with so I decidied to give it another go with a new one from scratch. This is a soft clipping overdrive with a bass boost and cut filter. The eq / filter section are pretty unique with an OTA LM13700. With the Depth switch you can select between a simple one pole filer, a two pole filter and a resonant two pole filter. The Initial control lets you blend the clean overdive signal with the filtered signal.
Schematic from the wizards at Deadend Fx



















