Dropping B+ substantially
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Dropping B+ substantially
by gui_tarzan » Sun Apr 19, 2015 1:08 pm
What would the ramifications be (or not) if I were to use a voltage divider to drop B+ to the OT on a Fender amp by 100v using cement 5w & 10w resistors? It's an experiment, so if there is something drastically wrong with the idea I won't do it. I'm getting 538v with all tubes in place and I'd like to lower it to 450v.
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Re: Dropping B+ substantially
by Geek » Sun Apr 19, 2015 6:54 pm
Nothing wrong with the idea at all! If you have a Google at "Power Scaling", you'll see this is one method.
Make sure you lower your screens as well, lest you lose them. You also might want to measure the bias now and adjust it after for the same anode dissipation, or you're going to distort earlier.
Cheers!
Make sure you lower your screens as well, lest you lose them. You also might want to measure the bias now and adjust it after for the same anode dissipation, or you're going to distort earlier.
Cheers!
-= Gregg =-
Fine wine comes in glass bottles, not plastic sacks. Therefore the finer electrons are also found in glass bottles.
Fine wine comes in glass bottles, not plastic sacks. Therefore the finer electrons are also found in glass bottles.
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Re: Dropping B+ substantially
by DeathRex » Sat Apr 25, 2015 7:31 am
What is the B+ supposed to be? Is the 538VDC past what the filter caps are rated for?
I worked on a freind's Vibrolux Reverb so now I'm slightly getting into guitar amps.
I worked on a freind's Vibrolux Reverb so now I'm slightly getting into guitar amps.
At first I wanted to be a ET. Now I are one.
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