Will do. Just used smd resistors. For small filter caps, i used Panasonic FM simply because they have great performance numbers on paper. May try smd next time, but wouldnt expect much difference. Caps are Auricap XO, and i also got Obbligato gold on you recommendation, RCruz. Using common mode choke for filtering before mur 860's, which will feed 10mF nichicon KG. That will be prereg for Salas shunt, of course. Hope to listen today with brothers rig, as this one is his.
These are Vishay TNPW. I saw their noise performance in a paper Scott Wurcer posted in Blowtorch thread on resistor current noise. I can post if you like. They are such tight tolerance, matching is no concern, and they have ppm as low as 10, in some cases. Susumu RG, i think, is also excellent candidate. I am doing this becausevi like how Salas sets things up for subjective tweaking and figured this would be a untried version. As far as building goes. I have gotten to where i can slingnit pretty fast, but i am not promising it will work 
Did you manage to get matched caps for the riaa filter ?
I do not see optional caps positins in your boards for trimming options.... my first simplistic was done with an etched board also and when I started to finetune it, it became a big mess.... had to add holes and p2p connections for the extra components.
I do not see optional caps positins in your boards for trimming options.... my first simplistic was done with an etched board also and when I started to finetune it, it became a big mess.... had to add holes and p2p connections for the extra components.
For a full fledged board, it would get more difficult. They have enough variations, that switching is no big deal. Paralleling is easy, by stacking. Vishay makes higher power smd versions that i am using. All very similar performance specs. Of course small signal is where the excel. I did get matched caps. And have some teimmer psoitions that cant be seen as an intentional act. There are two sides to every story....an dboard, in this case.
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Yes, TNPW.
I will post the doc on rrsistor noise. You think the YNPW perform well, wait till you see PBH 3W.
EDIT: I was wrong about the 10ppm. That is for Tyco RN73. I picked 50ppm TNPW becaus eit performed better in noise test.
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I think you are exactly correct. A good visual picture og this is the chart with the Caddocks. As you go up in power rating increased thermal mass), the noise level drops. Here it is.
https://dcc.ligo.org/public/0002/T0900200/001/current_noise.pdf
They are on par with Vishay Zfoil. Of course this says nothign about the sound of thin film vs foil.
https://dcc.ligo.org/public/0002/T0900200/001/current_noise.pdf
They are on par with Vishay Zfoil. Of course this says nothign about the sound of thin film vs foil.
