How to replace volume pot in Dynaco Pas

I went back to Dynaco Doctor and I couldn't find anything about the volume pot.If you have a link,could you post it up?

thanks

e

Here is a link to a diagram. The copy of the owners manual on the site also clearly shows the wiring, if you can read a schematic:

http://db.audioasylum.com/cgi/m.mpl?forum=dynaco&n=14137&highlight=this+drawing+should

Good luck!

I figured it out. Thanks Viridian.

I disconnected the loudness circuit,and installed a new 250k pot that came with my new Pas 2. The pot was way too sensitive,so I put some 10k resistors between the output and ground to refigure the taper.It is still too sensitive but it is much better.I will get some 32k resistors which should put it in the sweet spot for pot taper.

I am also thinking of installing a stepped attenuator but I want to figure out the best pot value to use before I do that.
I am thinking that 100k is probably where I should be.

I have a power supply upgrade coming too.

Since replacing the pot the sound is much more balanced,with much better imaging.The tone seems less colored while still maintaining the tube transparency.
A very nice sounding little preamp.

e

Great job! I hope that you are enjoying it. I installed the SDS power supply board in my PAS and it made a world of difference for the better. I just used cheap mylars as the bypass caps on the power supply, I may switch them out for something more ambitious.

Viridian: I was thinking I would just purchase on of the upgraded power supply mods from Audio Regenesis. Here is there link:
http://www.audioregenesis.com/projects/index.html

Not expensive and a easy conversion and makes the amp much safer and with better power supply.

I am also going to try my 25k stepped attenuator.I will let you know how it goes in the next day or so.

e