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ad 30 thc head bias ?

Posted: Wed May 08, 2019 4:06 pm
by deanogeorgeproject
Its class A so I shouldnt have to bias if I change power tubes to diff el84's correct ?

Somewhere online someone said you have to bias ? But if its class A I shouldnt

Re: ad 30 thc head bias ?

Posted: Wed May 08, 2019 4:18 pm
by bclaire
No biasing needed. Just replace the tubes and off you go!

Re: ad 30 thc head bias ?

Posted: Wed May 08, 2019 6:22 pm
by Jondog
No, unless you intend on pulling two tubes as discussed in your other thread.