Converting 90's 5881 Marshall's to EL34

[skoora]

Is it as simple as changing the resistor on the bias circuit or are the OT's specific to 5881's?

 

[skoora]

Bump for soon to end auction

 

[killertone]

The only thing you need to do is change the screen resistors from 5w 470 ohm to 5w 1k ohm. Even then, you may not have to do it. My 9200 only has plate volts of about 400VDC. The 470 ohm resistor can handle that no prob.

If I am on crack, someone please correct me but I believe this is correct.

 

[FortinAmps]

If you need it, here is the Marshall document for conversion
https://docs.google.com/leaf?id=0B9...ZGI5OTVmNWYzYzc1&sort=name&layout=list&num=50
Cheers,
Mike

 

[skoora]

Thanks guys. I missed the end of the auction anyway so maybe next time.