Quote:
Originally Posted by steelhorse
I hear ya solar but being that the dude that put out the 800 vid clip owns the company I got the response from, it stands to reason that perhaps the 800/900 series and older are different animals than the DSL/TSL's.
They seem to be on the ball over there at Euro so no real reason for me to doubt their information.
And I have watched the 800 clip and wondered the same thing but they told me the plate voltage didn't apply with the TSL so I didn't worry about it.
Oh well, we're all learning!
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I hear ya bro. I actually learned how to bias my DSL from his site. I thought I was all good until Trace from Voodoo told me alot more about getting these amps (DSL) biased not to mention on tubes. It was info overload.
At any rate here is a bias table for EL34's from Jim Jones on Webers website:
EL34 - 25W Hot (70%) Avg (60%) Cool (50%)
300V 58mA 50mA 42mA
325V 54mA 46mA 38mA
350V 50mA 43mA 36mA
375V 47mA 40mA 33mA
400V 44mA 38mA 31mA
425V 41mA 35mA 29mA
450V 39mA 33mA 28mA
475V 37mA 32mA 26mA
500V 35mA 30mA 25mA
With this you can see how little the bias numbers change from plate voltage to plate voltage biased hot or cold. So if you know DSL's run from 450 to 500 plate voltage then you can get in the neighborhood for the bias and just fine tune it to what sounds best. I have a MM OT and my bias is stable. Watch out for run away bias with DSL's stock OT per Voodoo. The bias may wander too hot while adjusting it and the tube can red plate. Make small pot adjustments either way.
