Volume Pot Upgraqde


I recently picked up a Sophia Electric Baby Tube Amp and would like to do some upgrades. The volume pot is is a 50K log pot.

Can anyone recommend a good replacement piece? Google isn't quite finding me anything...

It's a pretty tight fit, so any parts would need to be small enough to fit in the chassis.
bake986
Consider a shunt volume control with a 50K TX2575 series resistor and a Silonex variable light-dependent resistor in the shunt position. This is explicated in the Lightspeed DIYaudio thread. This will surpass a convention series attentuator.
Just looked up that Bent Audio has 50K attenuator modules and the small PRM-1 module that takes the place of the volume knob, if you don't mind buttons. Nice thing is that it adds remote. Also has power supply options.
Instead of coupling capacitors, consider a Jensen or Lundahl 1:1 line level output transformer.
How about an external switch box like the Goldpoint SW4 ($352) so you don't have to drill into the preamp.

Wish that I had these kind of options when I did a project like this years ago.
Should you use 'break before make' switches in a selector application?
How about a nice bank of relays and 'soft touch' momentary contact switches?
So, I think I have a solution.

I am going to fabricate a sub chassis that will accommodate a stepped attenuater.

The "sub frame" will also allow me to add a selector switch and more inputs as well since the baby only has a single stereo pair input.

I am also upgrading the coupling capacitors to Mundorf Silver/Gold Oil caps.

I will post up some pics when it is finished (can we even do that here? I'm new)
I've got a 50k Ohm stereo Noble(AP25), that I'm not using. Can a 1 1/8" H X 1 1/8" W X 1 1/4" D pot fit your application? FREE, to a good home.
A stepped attenuator would be a nice choice. If it won't fit, look at a TKD pot.
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