Home Tube DIY Asylum

Do It Yourself (DIY) paradise for tube and SET project builders.

RE: Interesting circuit.

Not to get into a long-winded discussion about this, but ... :)

I have to disagree regarding the 811A. I used them for years as linear amplifiers in audio-modulated RF service (single sideband). Their IM and THD are not significantly different than other tubes. As for the 6W6, I haven't used them myself as power drivers, but they do have huge peak current capability due to the robust heater design. That's the same reason I used a parallel-connected 6BL7 follower to drive each of my 211s. Can't speak for the Altec, but in my case, distortion measurements indicate no perceptible change as the output tubes enter A2. Distortion goes up gradually with increasing power, but there's no "step" at A2. That tells me the low output Z and power delivery of the followers is at least the equal of an IT.

Buy Chinese. Bury freedom.

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

Follow Ups Full Thread
Follow Ups
  • RE: Interesting circuit. - Triode_Kingdom 08:41:16 03/05/17 (0)


Post a Message!

Forgot Password?
Moniker (Username):
Password (Optional):
  Remember my Moniker & Password  (What's this?)    Eat Me
E-Mail (Optional):
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.