Sunday 15 November 2020

Electro Harmonix V1 Triangle Big Muff 66#5 - 1969 perfboard version

 Can't believe I haven't posted this one yet since it is one of the better vintage big muffs I built and played. In the very early days EH, component values varied quite a lot so this layout is based on Kitraes schematic HERE. There is also some notes and info the component values.

Trannsistors is 2N5133 which is almost impossible to source nowadays. Some Big Muff owners have measured their transistors (out of circuit) and reported those varied quite a lot but most of them were in the 150-300 hfe range. 2N2222, 2N3904 or BC547B might be good candidates but a personal favorite is ME4003.

Here is two layouts, one standard and one "Triangle Style" mojo layout. Both are verified.

 

 
 





 


DAM TB-00

 David A Mains take on a tonebender that should have been released before Tonebender Mk. 1...:-p