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In Reply to: RE: how to bias a tube to ASL aq1001dt posted by meannmartinez on October 05, 2016 at 15:18:22
Easy enough. Speakers connected, no music. Install the tubes, and while they are warming up, turn the tube selector that is on the side of the amp. You will see the meter reading change as everything warms up. If none of the tubes appear to be getting too high (over 500) on the meter then let them run for about ten minutes.
Turn the selector to the first tube and adjust for 500 (this equals 50ma)
Proceed to the next tube. You may have to run through the tubes several times.
If the tubes are new, check it after an hour or so and adjust if necessary.
Dan Santoni
Follow Ups:
Hi, i wondered if the 50ma bias setting for the kt120 is a bit low? I set the 6550 on my push pull amp at 70ma and higher depending on the 6550 i am running.
thank you so much for both of you dan and 6bq5, realy big helps.
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