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Marshall Studio 15 biasing

2/2/2000 11:16 PM
Tonefactor
Marshall Studio 15 biasing
What's up with the biasing circuit on this amp? It looks like it uses cathode biasing and grid biasing together. Why would they do this? Here's a link to the schematic:  
 
http://www.the-spa.com/mcarlyle/Media/finals/4001schem.gif  
 

 
Replies:
R.G. Yep, cathode and grid/fixed biasing... -- 2/2/2000 11:29 PM
Marc Re: Marshall Studio 15 PI diodes? -- 2/3/2000 4:40 AM