News:
June 04, 2023, 09:57:35 PM
« previous next »
Pages: [1]   Go Down

Author Topic: Bias Adjustment  (Read 579 times)

0 Members and 1 Guest are viewing this topic.

Offline adydula

  • Sr. Member
  • ****
  • Posts: 279
Bias Adjustment
« on: August 27, 2019, 01:07:35 PM »
After several months I chceked the bias and both sides were at 149 VDC.
I adjusted a few turns and set them back to the nominal 145 VDC.

So whats this indicating about the tube wear?

Alex
Logged

Offline Paul Birkeland

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 18352
Re: Bias Adjustment
« Reply #1 on: August 27, 2019, 02:19:08 PM »
It may indicate burn-in more than anything. 
Logged
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline adydula

  • Sr. Member
  • ****
  • Posts: 279
Re: Bias Adjustment
« Reply #2 on: August 28, 2019, 04:52:06 AM »
I agree....nothing to really be concerned about.

It would be a neat excercise to plot the voltage change over time and see how that looks....

Nah...life is too short!!

Thanks Paul....listening with the Mainline, its superb!

Alex
Logged

Offline Raymond P.

  • Full Member
  • ***
  • Posts: 136
Re: Bias Adjustment
« Reply #3 on: August 28, 2019, 05:33:45 AM »
The good news is I don't notice any change in sound quality from this bias drift. I'm happy there's the ability to adjust bias though.

Logged
Raymond P.
Pages: [1]   Go Up
« previous next »