In Reply to: bias points posted by Medium Jim on January 25, 2012 at 18:29:01:
When I flipped the switches to put it in triode mode, I checked the bias (at 10 minutes, 30 minutes and two hours) and it had shifted slightly to the cooler side. It's funny; not since my first time turning it on has the bias meter given a different reading after 10 minutes - started cold and leveled off 'on the mark' for each tube by the one hour point.
I can't give exact bias voltage data because this amp doesn't have accessible test points. It just has a bias meter. Flip the mute switch, then hold each of the eight output tube metering switches while viewing the meter - adjust the adjacent potentiometer as necessary. It's rather ergonomic, if a little less romantic.
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Follow Ups
- I did ;-) - wazoo 18:41:28 01/25/12 (8)
- RE: I did ;-) - Medium Jim 19:31:47 01/25/12 (7)
- milspec is also interesting - wazoo 20:34:20 01/25/12 (6)
- Graded milspec - esande 20:49:56 01/26/12 (2)
- RE: Graded milspec - Medium Jim 21:29:35 01/26/12 (1)
- RE: Graded milspec - Medium Jim 11:56:01 01/27/12 (0)
- RE: milspec is also interesting - Medium Jim 20:50:10 01/25/12 (2)
- JAN 5751's - MaggiesAndCats 09:53:58 01/26/12 (1)
- RE: JAN 5751's - Medium Jim 10:05:32 01/26/12 (0)