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Tube PS for mic preamp Help
Tube PS for mic preamp Help
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Old 11th August 2010, 11:52 PM   #1
chrispsound is offline chrispsound  United States
diyAudio Member
Join Date: Aug 2010
Location: Long Beach, Ca
Question Tube PS for mic preamp Help

I have 2 different Kits in my possession and I would like to get them to work together.
1st kit: Glassware PS-4 tube PS
2nd Kit: Triode Electronics ST-70 mic preamp project

I am running the PS-4 with the 10K/ 5w series resistor and 47uF/450v PS caps with B+ going to eyelet 20 on the ST-70 board. What I don't know is what to hookup to eyelet 19? Triode has a Tube rect PS schematic for the preamp that shows another 10K series resistor and 100uF cap for eyelet 19. Do I need that coming off the PS-4 power supply to make the preamp work or can I just hook up 19 and 20 to B+?
I was also wondering if anyone can tell me if the mic pre is a MU follower? Link to Triode ST-70 mic pre and PS examples
and link to Glassware PS-4 PS schem
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