Home Tubes Asylum

Questions about tubes and gear that glows. FAQ

Rectifier Hum

I recently tried an experiment with my amp. I substituted a NOS Mullard GZ34 for a 5U4GB. Where there was NO noise or hum with the 5U4GB, the GZ34 hums. I have two of them and substituted one GZ34 for the other GZ34. The hum decreased but did not go away. I Thought full wave rectifiers are interchangeable as long as the voltage differences are accounted for.

My problem is that while it hums, I like the sound of the GZ34. Any ideas what might be causing this?

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

Topic - Rectifier Hum - datman 19:24:08 03/13/17 (3)


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.