24 or 24a as driver in 2 stage..?

[JandG]

Has anuone tried this 24 or 24a tetrode as driver in 2 stage amp..? I have read somewhere on asian DIY site that it worked & worked well on a 2 stage 2a3 amp. I have yet to get more details on this, hopefully I will. I have alot of 24 & 24a & would like to try 2 stage with them. Any suggestions on this..?
Thanks J & G

 

[korneluk]

The original Loftin-White used the 224 as the input tube. Follow the links...

An externally hosted image should be here but it was not working when we last tested it.

http://www.studiomaudio.info/loftinwhite.html

http://mikesradios.googlepages.com/article.html

 

[dowdylama]

24 works quite well - 'though some can be microphonic.
Keep the voltage on the screen low for best sonics.

 

[mach1]

Thorsten posted a detailed dc coupled 24 / 45 design tutorial here some time ago. Check the archives.