Doug Self Preamp from Linear Audio #5

** Doug Self Preamplifier Kit ** One last Time ...

** NOTICE **

I have 2 kits left from this last round. Let me know if you want one.

This was probably the last group buy. And because I was asked ...

DSELF_06.jpg
 
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Hi,

A question for the specialists please : does a good Cermet pot could be good enough or even better than a carbon pist one?

Vishay P11 : http://www.stquentin-radio.com/telechargement/documentation_pdf/potentiometre/C408.pdf

Or is there no impact on the sound because the design made by Douglas Self (5K linear pot & huge gain) ?

(By the way : is it the fourth edition of his book which is going to be launched ?)

Many thanks,
 
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Hi,

A question for the specialists please : does a good Cermet pot could be good enough or even better than a carbon pist one? ...

Eldam,

Many do express a preference for them, however I would not expect these to fit the solder footprint on the PCB. I think that you would be happier with the Alps (or equivalent) that are specified in the BOM.
 
Well I finally boxed it up. First thing that I installed in a case in over a year. I bought the Slimline 1U case from the DIYaudio store. 280mm deep. I still have to devise a label for the front. I was going to use water slide but the front panel is brushed and I'm not sure how well a decal will stick to it.

I made a mistake when I laid out the back panel and drilled it the opposite of what I had intended, so the PSU ended up on the left side of the case. I wanted it on the right so the controls would have been more centered. Everything works fine as is I just would have preferred it the other way. The only thing bolted down is the PSU. The other boards are held in place by the front and rear panels. The stand-offs are there to prevent the boards from somehow touching the bottom cover.

Here are some pictures for your enjoyment.

Blessings, Terry
 

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