Home Tube DIY Asylum

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

[ Follow Ups ] Thread: [ Display  All  Email ] [ Tube DIY Asylum ]
[ Alert Moderator ]

Re: Eico HF-87 B+ kinda high - like to get it stabile & sounding good - suggestions?

Hi Freddy, remember the voltage on the tube is actually between the cathode and plate. Don't go fixed bias, cathode is more dynamic. Calculate for a lower draw after measuring all voltages, and see what it is you acually have in terms of plate dissipation now. Some tubes will show plate glow at below rated levels, indicating a problem with internal construction geometries- replace that 1 tube, don't change your whole amp! Tony



This post is made possible by the generous support of people like you and our sponsors:
  Atma-Sphere Music Systems, Inc.  

Follow Ups Full Thread
Follow Ups
You can not post to an archived thread.

[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2025, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]