Home K&K Audio / Lundahl Transformers

Welcome! Need support, you got it. Or share youe ideas and experiences.

RE: Question re 6BX7GT in 300B push pull designs

I have used EL34s for this purpose in two similar amp designs over the past 5 years with somewhat better results than I was able to get with 6BX7GTs. The voltage and current requirements are greater, so that is a disadvantage, but as you point out, the tubes are still available and since they are single element tubes, matching can be accomplished in a straightforward way, and they are arguably better drivers for high swing requiring tubes like 300Bs. When using EL34s I used the LL1671/PP as the interstage, as it's a better match and that eliminates the need to deal with high frequency out-of-band resonances.

I would say that we were missing the mark by not using a little more current to create better driver stages for challenging output tubes!

Kevin Carter
K&K Audio
www.kandkaudio.com


This post is made possible by the generous support of people like you and our sponsors:
  Michael Percy Audio  


Follow Ups Full Thread
Follow Ups

FAQ

Post a Message!

Forgot Password?
Moniker (Username):
Password (Optional):
  Remember my Moniker & Password  (What's this?)    Eat Me
E-Mail (Optional):
Subject:
Message:   (Posts are subject to Content Rules)
Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:  Automagically notify you when someone responds.