Quote:
Originally Posted by ryan.kroemer@bigpond.com
Thanks, how do i work out plate voltage of my new amp if i can work that out i know the formula to then work out what Ma to set the poweramp tubes at.
Do i have to bias pre-amp tubes on a newly built amp or are the self biasing.
the video on that website is not loading and yet i have broadband, is it availible on youtube
thanks
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The plate voltage has to be measured with a voltmeter. I believe it's on pin #3 of the power tube socket, but double check that. Be careful, its gonna be somewhere between 300-600 volts!
Preamp tubes do not need to be biased.
Here's a short youtube video on biasing...it's just one in a series of "how-to" videos.
YouTube - How to Change Tubes on Vacuum Tube Amplifiers : Pulling Pre-Amp to Change Tubes on an Amplifier