Home SET Asylum

Single Ended Triodes (SETs), the ultimate tube lovers dream.

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ SET Asylum ] [ Return to Search Results ]
[ Alert Moderator ]

RE: 2A3 & 300B AC heater vs. DC heater

hi paul,

yes, the circuit by steve bench is the one I was familiar with. Its fairly clever and a simple solution, but I couldn't get it working last time I tried it. Can you post the relevant parts of the parabee schematic to show how bottlehead implemented it? Steve was able to get 20dB hum reduction this way and much more when going after the higher harmonics. But 20dB would really make AC usable for me. Right now its too much hum on a 300B.

Agree with the DC gradient on the filament. Not a huge issue. Switching tubes between channels with opposite wired filaments is an easy solution.

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

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.

[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2024, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]