[bartas]

Hi everyone,
I`m new to this forum so pardon my mistakes if any.
I`m building a Cornet 2 phono stage all hard wired and PSU separated from signal board:

I plan to use a GZ32 rectifier and a combination of tungsram/siemens signal tubes. I`m still waiting for two of my signal tubes so can not test everything connected together. I tried to connect just the PSU board to tranie with GZ32 placed. The folowing happened:
1. The LED turned red and the rectifier lighted (everything cool and quite)
2. The LED didn't`t go green (or is it supposed to without the valve load)
3. The voltages measured were: rectifier input 2x300v; B+ 312v; filament at both sides of R223 8.4v
I wonder if these are normal without load or do I have to worry?
Pity I can not test voltages with complete set of valves.
Thanks for any replies.

[tubesforever]

Please check my information with Jim, I would say a slow on or indirectly heated rectifier would be better for your C2 long term.  I am using a Mullard indirectly heated rectifier tube right now, but my Bendix 6106 is its sonic equivalent. 

Does your light go red to great within a few seconds?  If so it is a directly heated filament. I understand this might possibly reduce the life expectancy of your 12AX7 and 12AU7 tubes.   

In either case, once you have picked your final rectifier, just measure the voltage at the test points and change the drop down B+ resistors to hit the mark.  Also check your H+ voltages.  These effect bass quality on my unit.  I try to hit 6.175 v on the H+.

I didn't have to change my resistors much to get to the test point values.  My rectifier was running about 35 volts higher. 

It looks like you did your C2 with point to point wiring.  You are braver than I!

[bartas]

Yes it is all pin to pin wired. Don`t know if it has any effect on the sound, but I like the process   
The GZ32 is half indirect heated. It draws a little more current as the specified 5Y3, but my 370BX didn't`t even go warm. Of course it was only PSU board connected. I read in some of the posts about the different rectifiers and as I understood (correct me) there will be no harm as long as the voltages and current draw stay in the safe range.
Yesterday I started connecting all into test version on a wood board. Still won`t be able to test final voltages without all the valves.

[bartas]

Hey, everything is on and running !!!
No errors nos hum or buzz even without grounded chassis or shields.
Everything worked perfect at first time.
B+ voltages at check points are most 10v of stated.
H+ is 5.89 (planning adjustment).
Will post pics of my CORNET test assembly latter.
What a satisfaction