Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: tubesornothing on December 26, 2023, 05:06:26 pm
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My brother has a 1950s Seeburg 222 Jukebox tube amp with a stereo amplifier. We want to build a remote volume control for it. The jukebox is made for a remote volume control, its volume pot can basically be unplugged and then a a 25' cable with a pot in a handheld box can be plugged in.
However, we want to do a wireless remote volume control. No problem, arduino and a digital pot to the rescue! Well, not so simple: The volume control is 25k pot with two taps on it.
See the schematic. I would like to understand why the volume pot has two taps on it. I can see the signal gets routed to the (bass) tone control section first, then to the output section, but why the tapped pot?
Any way I can do this with a "normal" pot? Then I can use a digital pot.
My hail mary would be to attach a little servo to pot and just control the servo.
thanks for looking.