Wednesday, 4 May 2022

BJFe Vibra Vibe

 Schematic is avaiable HERE.


 


Bigfoot Fx Magnavibe

 



Fender Pugilist Distortion

 Schematic and circuit description is avaiable HERE.


 

 

 


 


Bigger Muff

 Per request. Based on Indigo Ranch Bigger Muff without the high voltage tube section. It is basically based on a Ram's Head variant but with small filter caps and low gain transistors. I added a Mid switch for a bit more versitality.



Tuesday, 3 May 2022

Maestro MFZT-1 Fuzztain

 Per request. A slightly modernized take on a Moog designed Fuzz/compressor hailing back from the 70s. The signal path remains true to the original but the rotary switch has been removed in favour for a variable fuzz control. And the two compressor settings is now fed through a toggle switch. The CD4007AE IC might be hard to source but it is avaiable at Ebay.

Schematic is avaiable HERE.


 


Death by Audio Purple Card Fuzz

A big thanks to Ian for sending me a couple of these PCB to trace!

This one is already verified by Chris Stelloh, thanks buddy!


 

 


Lastgasp Art Laboratories GMR Gomorrah

 Schematic is avaiable HERE.


 


Lastgasp Art Laboratories GM2 Green Monster

 Schematic is avaiable at Deadend Fx.





Monday, 2 May 2022

Stephen Douglas Leona V1

 Ok, one more layout today. This one traced by Clément who was very generous to send me the schematic. 

Once again, thank you!


 


Arion MDS-1 Distortion

 The cheap plastic casings fools us but Arion did some really good sounding stompboxes in the 80s and 90s. Here is a quite simple distortion unit that is supposed to be a sleeper. Earlier versions had silicon diodes as hard clippers which was switched to red LEDs later on. So I included a diode switch.

Schematic is avaiable HERE.


 


Washburn A-D3 Stack in a Box

 A J-FET amp emulator hailing back from the early 80s, quite ahead of its time. Trimpots are included to be able to bias the FETs and the 5,6k inline with the trimpots is reduced to 2,2k to be able to use a wider range of J FETs.

Schematic is avaiable HERE.



Ibanez BN5 Black Noise

 An old request. This is pretty much a Rat with an active treble control and two fixed eq gyrators making it quite bass heavy. Lots of mods can be done like a diode switch, tweaking the gyrators and the tonestack as well as tweaking the RC filter at the first gainstage.



Tuesday, 5 April 2022

Death by Audio Interstellar Overdriver Deluxe

 Thanks to Ross to reminding me about this one!

Here we a have a circuit for people that just love offboard wiring. ;-) Also be prepared to use sockets to try out different transistors since this is a "reverse beta" design which can be quite finnicky and be a source of frustration.

Scheematic is avaiable HERE.

 
And for those who prefer only the second channel and less offboard wiring... 





Sunday, 3 April 2022

Box of Hall

 Another request by Ian.

The "Heaven within" mod is included as well as a feedback control for infinite reverb.

 *edit' 220421* Layout updated and verified. Thanks Ian!

...and a demo by Ian! 


 





Friday, 1 April 2022

Sunday, 27 March 2022

Electro Harmonix Deluxe Big Muff - EH3054C version

 The late  EH3054C version of the vintage Deluxe Big Muff. Some improvements had to be done like true bypass and common voltage refrence.

Schematic is avaiable HERE.


 


Friday, 25 March 2022

God City N.E.W. The Thing That Should Not Be Preamp

An op amp emulator of Mesa Boogie Mark II C+ which was used by Metallica for Master of Puppets. There is also a an eq board (which is huge!) so that one is for another post.

Schematic is avaiable HERE.