new C3g/211PSE comments pls

louischia · 21st July 2011, 08:18 AM

I have been collecting parts including PIO caps and irons for the longest time for my GM70 SET with the slightest idea about the correct way of calculating loadlines and reading curves.

Thanks to online readings and advices from some nice gentlemen from this forum, I have collected all the parts needed except the interstage.

After auditing a 211 PSE recently, I'm toying around the idea of building a SET that can take a GM70 or two 211 in PSE configuration.

I have two pieces of 2x 10-0-10V/6A. So I can connect as 10V or 20V for GM70 or 211 filaments.

The idea now will be to install 3 sockets (1 of GM70, 2 for 211) and a switch for filament changing.

So changing from a GM70 to 2x 211 will be simply changing of tubes, switching filaments, and re-biasing.

Btw, my OPTs are Tango FX-50-7S NOS.

Any comments will be deeply appreciated.

Now questions:
1 - What ratio for the interstage that will suit a GM70 or 211 PSE?
2 - Are my voltage doubler RCA83 circuit correct?
3 - Are my loadlines correct?

- Louis

louischia · 08:26 AM

louischia · 21st July 2011, 08:41 AM

211

GM70

louischia · 21st July 2011, 08:47 AM

B+ & Bias

PSUDII

louischia · 21st July 2011, 08:48 AM

And finally, the filaments

21st July 2011, 08:18 AM	#1
louischia diyAudio Member Join Date: Jan 2003 Location: Singapore	new C3g/211PSE comments pls I have been collecting parts including PIO caps and irons for the longest time for my GM70 SET with the slightest idea about the correct way of calculating loadlines and reading curves. Thanks to online readings and advices from some nice gentlemen from this forum, I have collected all the parts needed except the interstage. After auditing a 211 PSE recently, I'm toying around the idea of building a SET that can take a GM70 or two 211 in PSE configuration. I have two pieces of 2x 10-0-10V/6A. So I can connect as 10V or 20V for GM70 or 211 filaments. The idea now will be to install 3 sockets (1 of GM70, 2 for 211) and a switch for filament changing. So changing from a GM70 to 2x 211 will be simply changing of tubes, switching filaments, and re-biasing. Btw, my OPTs are Tango FX-50-7S NOS. Any comments will be deeply appreciated. Now questions: 1 - What ratio for the interstage that will suit a GM70 or 211 PSE? 2 - Are my voltage doubler RCA83 circuit correct? 3 - Are my loadlines correct? - Louis __________________ new kid on the board!

21st July 2011, 08:24 AM	#2
louischia diyAudio Member Join Date: Jan 2003 Location: Singapore	C3g/211PSE __________________ new kid on the board! Last edited by louischia; 21st July 2011 at 08:26 AM.

21st July 2011, 08:41 AM	#3
louischia diyAudio Member Join Date: Jan 2003 Location: Singapore	curves 211 GM70 __________________ new kid on the board!

21st July 2011, 08:47 AM	#4
louischia diyAudio Member Join Date: Jan 2003 Location: Singapore	B+ & Bias B+ & Bias PSUDII __________________ new kid on the board!

21st July 2011, 08:48 AM	#5
louischia diyAudio Member Join Date: Jan 2003 Location: Singapore	Filaments And finally, the filaments __________________ new kid on the board!

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
C3g	stecairoli	Tubes / Valves	2	17th September 2006 07:02 PM
Comments on Intelectual creation, pls	Jorge	Solid State	29	30th July 2005 12:46 AM
Comments on TL design, pls	Jorge	Multi-Way	2	9th June 2005 03:05 PM
Biamped Open baffle/Sealed Comments pls	kestrel200	Multi-Way	4	23rd January 2005 02:33 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read