Tube DIY Asylum

RE: Bias adjustment? Scott 208

100.16.166.8

elblanco

In Reply to: RE: Bias adjustment? Scott 208 posted by DAK on October 20, 2024 at 11:19:30

here is schematic.

does it look like your circuit?

they made revisions.

did you do dc balance adjustment for minimal ac output at speaker terminals?

can use meter for this.
208 schematic (Open in New Window)

Follow Ups:

straight out the gate to the plate! couple I saw years ago was from 5R4.staight on to the output transformer - Cleantimestream 09:01:57 10/23/24 (0)
!
The Mind has No Firewall~ U.S. Army War College.
RE: Bias adjustment? Scott 208 - DAK 15:26:31 10/20/24 (0)
Yes, that is the schematic that i am using. I just made the 2 bias voltages on the input of the 7591 tubes , shown as -18v on the schematic, to as close to the same on my amp. Lacking any other info, since the schematic showed both voltages of 18v I made the voltages on the amp the same as well.

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