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Plate Voltage in marshall 1987 MK II Clone

2/18/1999 10:50 AM
LSC
Plate Voltage in marshall 1987 MK II Clone
Hi...  
I build 1987 MK II Clone  
(I use scheme at hoffman amp homepage)  
it use Cathod bias other thing is same as  
original.  
 
I use 690V CT PT  
plate voltage are about 445v  
Grid voltage are about 435v  
and I set bias about -35v  
is it too high? right?  
and sound are not good...  
muddy bass,mid...  
what can I do?  
sorry about my poor english.  
thanks  
bye,...

 
Replies:
LSC I forgot this... Tube are EL34 -- 2/18/1999 10:56 AM
Bruce Re: Plate Voltage in marshall 1987 MK II Clone -- 2/18/1999 11:00 AM