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Amp/Preamp Asylum Looking for a new Amp or Preamp? If you're after tubes, post over here. |
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Hi,
I have acquired a D-76 in need of some TLC. With my Eico 666 tester I have matched all the tubes quite well, and bought new ones where necessary, so that I think all the tubes are now strong and fairly well matched. I replaced all the o/p caps as some looked a little dodgy.
Now I need to set the bias. The board has these sockets that look like they'll take a 1/4" jack - is that right? I am not sure how these work - they look like they might let you measure mA directly.
If not, can I check mV across a resistor somewhere?
The instructions say to aim for 60mA for all 4 tubes.
TIA,
Mark
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Topic - Audio Research D-76 - advice on biasing - mark944s2@yahoo.co.uk 11:41:01 01/25/10 (10)
- Agree w/Dman, except maybe... - Jim Smith 15:29:56 01/25/10 (1)
- RE: Agree w/Dman, except maybe... - Dman 07:09:59 01/26/10 (0)
- RE: Audio Research D-76 - advice on biasing - Dman 14:44:00 01/25/10 (7)
- RE: Audio Research D-76 - advice on biasing - mark944s2@yahoo.co.uk 15:59:20 01/25/10 (6)
- RE: Audio Research D-76 - advice on biasing - Dman 17:37:50 01/25/10 (5)
- RE: Audio Research D-76 - advice on biasing - mark944s2@yahoo.co.uk 20:27:45 01/25/10 (4)
- RE: Audio Research D-76 - advice on biasing - Dman 05:37:26 01/26/10 (3)
- Bias now set, sound is distorted - mark944s2@yahoo.co.uk 09:56:42 01/27/10 (2)
- RE: Bias now set, sound is distorted - triode3 06:30:31 01/29/10 (1)
- RE: Bias now set, sound is distorted - mark944s2@yahoo.co.uk 09:29:04 01/29/10 (0)
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