G
gusfinley
New member
Yeah, So, I got this 40W Marshall JCM2000 DSL401 with four EL84 in the power stage. I also ave a 25W celestion greenback, and I have learned that if I pull two of the power tubes I get only 20W and so the speaker should handle it.
THe questions - I just purchased two mesa/boogie tubes to use for recording. How do you bias just two power tubes in a four power tube amp?
Also - it is a matter of controversy what exaclty pulling power tubes does to your ouput taps on the output transformer. Some say it doubles the indicated value, and so I woiuld need to run my 16ohm speaker at 8 ohms.
Anybody have any experience wiht this sort of thing on Marshall amps?
Thanks for your help guys
THe questions - I just purchased two mesa/boogie tubes to use for recording. How do you bias just two power tubes in a four power tube amp?
Also - it is a matter of controversy what exaclty pulling power tubes does to your ouput taps on the output transformer. Some say it doubles the indicated value, and so I woiuld need to run my 16ohm speaker at 8 ohms.
Anybody have any experience wiht this sort of thing on Marshall amps?
Thanks for your help guys