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Old 12th January 2013, 01:27 AM   #8981
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Going smd, so gotta have it.
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Old 12th January 2013, 09:14 AM   #8982
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Cool... loocking forward to the results.

Can you post a boom for the smd parts buzz ?
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Old 12th January 2013, 10:08 AM   #8983
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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.
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Old 12th January 2013, 10:09 AM   #8984
Salas is online now Salas  Greece
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There are some low ppm SMD resistors from Vishay although expensive.
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Old 12th January 2013, 10:16 AM   #8985
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Quote:
Originally Posted by buzzforb View Post
Hope to listen today with brothers rig, as this one is his.
So you are planning to listen to it today !!! You are a fast builder
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Old 12th January 2013, 10:26 AM   #8986
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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
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Old 12th January 2013, 10:30 AM   #8987
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Do they sell by piece? If they sell by the 10s or 100s...no good.
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Old 12th January 2013, 10:35 AM   #8988
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Yes. Mouser sells the Vishay individually and Digikey sells the susumu. Salas, you should try Isabellehuette PBH. You can get them from Burkline. They have noise number sthat beat som eof the best resistors in the world. Same price as Coddock MP..
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Old 12th January 2013, 10:39 AM   #8989
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I see they come only in 50ppm when 0.5W though. How do you manage the 2K2 1W in your plan? Then you can't make experiments for load or bridge resistor between types like with through hole, don't know. Good for getting all in one make kinda thinking. Not that cheap though.
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Old 12th January 2013, 10:40 AM   #8990
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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.
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