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)

 

 
 
Demo time with MTK!