ampage
Tube Amps / Music Electronics
For current discussions, please visit Music Electronics Forum. The sunn still shines online!

ampage archive

Vintage threads from the first ten years

Search for:  Mode:  
previous: Robert Hi Bruce,Is it possible to use ... -- 3/11/2002 5:34 AM view thread

Re: 6L6s and GZ34?

3/13/2002 6:54 PM
Bruce /Mission Amps
Re: 6L6s and GZ34?
Yes that 270ohm 10 watter wiil work.  
If you have a smallish PT, I'd prefer not to use any hollowstate recitfier when doing this mod as there is an additional high voltage load and filament supply load put on the power tranny when the 6L6s are used and biased up to about 18-20 watt range. Using a SS rectifier unloads the PT's VA a small amount and it will run slightly cooler for it.  
In order to get a little power supply sag, I'd consider using a 120-150 ohm power resistor in the grounded center tap lead of the power tranny's high voltage secondary.  
My first attempts at a 6L6 version of the 5E3 used a standard reissue Pro Reverb OT.  
I've since had custom ones made with a different primary zed and a 4 and 8 ohm tap too, but the old Pro OT still sounds pretty darn good!  
 
Bruce

 
Replies:
KB Bruce help me fix up a 6L6/GZ34 and... -- 3/18/2002 1:24 PM