Home Tube DIY Asylum

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

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

Thomas stereo organ amplifier 6973 to 6cz5 conversion

Hello I have a stereo amplifier that came out of a thomas organ. This amp has a 12ax7 6cg7 and a 4 6973 tubes. I am converting this amp to run the 6cz5 because the 6973 is getting tuff to find. What I have done so far is 1 dropping resistor of 560 ohms in the power supply which has helped drop the voltages from 440 to around 380. This amp has fixed bias and from what I have read the 6cz5 cannot see more than 100k at the grid #1 and when I look at pins #3 and 6# there are no resistors that go to ground so my question is should I add them or leave it alone ?

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

Topic - Thomas stereo organ amplifier 6973 to 6cz5 conversion - joshie 19:21:11 01/14/22 (22)
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 ]