Twin plate / mono plate?

2nd harmonics for the masses

Twin plate / mono plate?

Postby Ty_Bower » Mon Apr 20, 2009 3:51 pm

Why do most of the old 6B4G tubes have twin plate structures inside? I'll assume these things actually have two separate triodes internally wired in parallel. What is each half? A 45? Looking at the datasheets, the 2A3 has half the plate resistance and double the transconductance of the 45, so I'll assume this is the case. Why didn't they just design a bigger triode?

Then you have the newer Sovtek 6B4G, which do appear to have a single plate structure. Why'd they move away from the twin plate design? Does anybody know the history here? Maybe I should go poke around www.r-type.org and see if there is anything enlightening in their exhibits...

edit: http://www.r-type.org/exhib/aaa0146.htm
"It's a different experience; the noise occlusion, crisp, clear sound, and defined powerful bass. Strong bass does not corrupt the higher frequencies, giving a very different overall feel of the sound, one that is, in my opinion, quite unique."
User avatar
Ty_Bower
KT88
 
Posts: 1494
Joined: Wed Mar 21, 2007 2:50 pm
Location: Newark, DE

Return to get*set*go

Who is online

Users browsing this forum: No registered users and 9 guests

cron