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Does  5w combo 5C need rebiasing when replacing tubes?

It´s a Class A amp?

asked 07 Jul 2020 at 10:13 AM

Alberto Bangzilla
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Hey there! 

 

I just added a JCM 2000 DSL50 to the family and I'm now re-biasing it, as the previous owner set it to something strange like 30mV. 

I know, most sources in the www advice to bias it around 45mV, but I found it to sound best with one Tube at 39mV and the other one at 38mV.

When I set it higher the single notes in a chord (talking about the drive channel) tend to become "loose" and seem undefined. 

Is there anything that speaks against setting it to 39mV, could it be too low? 

I don't want to "miss" anything soundwise and just the fact that so many people advice to turn it up to 45mV makes me uncertain about my own ears.

Thanks! 

Kevin 

asked 14 Nov 2018 at 10:33 PM

Kevin Berger
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