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How to replace volume pot in Dynaco Pas

I have just aquired a Dynaco Pas 2 preamp. I would like to replace the funky volume pot.I have a alps style pot and I also have a stepped attenuator to use.Both the Alps and the Stepped Atenuator have 6 lugs for connecting.The stock Pas pot has 12 lugs. Normally there would be R-in,gnd.,R-out,L-in,gnd.,L-out.That's six.
The pas has 12 and a couple of caps connected as well. Can anyone enlighten me on how to change this out?

thanks in advance.

e
emorrisiv
emorrisiv OP
313 posts
 
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
Post removed 
emorrisiv OP
313 posts
 
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
Post removed 
emorrisiv OP
313 posts
 
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
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