Sunday 14 March 2021

Electro Harmonix V2 Big Muff Ram's Head "White Can version" 1974

 It is Pie Day so here is a layout of an old Ram's Head variant. Rarely cloned and some cap values is not found in any of the other vintage EHX variants. 220pF/680pF caps replaces the standard 470pF/500pF values and the tonestack has less mid scoop. Still added a Mid switch for some sligtly boosted mids.

 Note that the FS36999 was house numbered 2N5133s. These varied in Hfe a lot, ranging between 100-800. So socketing may be a wise decision for the transistors.


 
...and a mojo layout with 1,2w carbon comp resistors for the purist...