Wayne's BA 2018 linestage - Page 211

6L6 · Today, 04:38 PM

?? What do you mean?

aljordan · Today, 04:48 PM

This is what I do. Once the unit has been on a while, leave the cover on and stick the multimeter probes into and on the output RCA jacks. That way you can see where the offset is on each output when the temp is stable because it will drift when you take the cover off. Then adjust the pots only the amount you need to given the extra drift from the cover being off.

flamethrower1 · Today, 06:45 PM

Maybe DC offset was not the correct term, I meant adjusting the pots as close to zero as possible.
Kind of thought it was as simple as the answer above, just wanted to make sure before I put an eye out or something.
Thanks aljordan

aljordan · 06:53 PM

DC offset is the correct term, and it is the audio outputs you are measuring when adjusting. Board outputs or rca outputs won't make a difference. Just don't stick a multimeter lead into your eye, or drag a screwdriver across any board components.

Today, 04:38 PM	#2101
6L6 diyAudio Moderator Join Date: Oct 2010 Location: Denver, Colorado	?? What do you mean? __________________ Illustrated Build Guides - Pass F4 - Pass B1 - Pass F5 - Pearl 2 - O2 HPA - Hagerman Bugle 2 - Pass Aleph J - Me at BAF'13 -Pass F5Turbo - BA-3 Amp - BA-3 Preamp -F6- -AmpCampAmp -Me at BAF'18 -Me at BAF'19

Today, 06:49 PM	#2104
aljordan diyAudio Member Join Date: May 2006	DC offset is the correct term, and it is the audio outputs you are measuring when adjusting. Board outputs or rca outputs won't make a difference. Just don't stick a multimeter lead into your eye, or drag a screwdriver across any board components. Last edited by aljordan; Today at 06:53 PM.

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Today, 04:48 PM	#2102
aljordan diyAudio Member Join Date: May 2006	This is what I do. Once the unit has been on a while, leave the cover on and stick the multimeter probes into and on the output RCA jacks. That way you can see where the offset is on each output when the temp is stable because it will drift when you take the cover off. Then adjust the pots only the amount you need to given the extra drift from the cover being off.

Today, 06:45 PM	#2103
flamethrower1 diyAudio Member Join Date: Sep 2015 Location: Wisconsin	Maybe DC offset was not the correct term, I meant adjusting the pots as close to zero as possible. Kind of thought it was as simple as the answer above, just wanted to make sure before I put an eye out or something. Thanks aljordan