|
Tubes Asylum Questions about tubes and gear that glows. FAQ |
|
|
|
Tubes Asylum Questions about tubes and gear that glows. FAQ |
|
Guys,
Well, I sent my Heathkit amps off and had someone find my error(turned out to be grounding). He was going to change them from Cathode biased to fixed bias. But, looking at space(UA-1, UA-2, or AA-61 depending on the year), it was limited. So we choose to add a little bit of adjustment. I think they can adjust about 1 mA. There is some pots inside now..
So, it's time to re-tube. What pin should I be measuring to adjust the bias?? HELP!! I can follow old instructions, but I guess my functionality of tubes doesn't translate between theory and practice.
Michael
This post is made possible by the generous support of people like you and our sponsors:
Topic - HELP adjusting my EL84 modified cathode amp - finewatchrepair 16:39:15 01/24/15 (10)
- RE. Have you tried the Weber bias calculator? - DAK 16:28:02 01/27/15 (0)
- Ask your "someone" if they thought of this. - Chip647 07:59:16 01/25/15 (8)
- RE: Ask your "someone" if they thought of this. - finewatchrepair 11:25:17 01/25/15 (7)
- RE: Ask your "someone" if they thought of this. - Chip647 13:27:12 01/25/15 (6)
- RE: Ask your "someone" if they thought of this. - finewatchrepair 18:22:20 01/25/15 (4)
- RE: Ask your "someone" if they thought of this. - Jim McShane 06:04:52 01/26/15 (2)
- RE: Ask your "someone" if they thought of this. - finewatchrepair 06:58:52 01/26/15 (1)
- RE: Ask your "someone" if they thought of this. - Jim McShane 10:09:27 01/26/15 (0)
- RE: Ask your "someone" if they thought of this. - Chip647 05:04:58 01/26/15 (0)
- RE: Ask your "someone" if they thought of this. - finewatchrepair 16:43:26 01/25/15 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]
