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Old 26th January 2011, 02:46 PM   #5791
AndrewT is online now AndrewT  Scotland
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Quote:
Originally Posted by mhouston View Post
I had used the equiv. of a 0.0034uf cap where a 0.034 cap should be.
had the BOM and schematic specified 34nF and the components marked as 33nF + 1nF, the mistake would probably never occur.
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Old 26th January 2011, 07:18 PM   #5792
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Quote:
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had the BOM and schematic specified 34nF and the components marked as 33nF + 1nF, the mistake would probably never occur.
I really have to take the blame here for not being more carefull. I'm usually spot on with my values but on this build I buggered two.
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Old 12th February 2011, 04:38 PM   #5793
smpkje is offline smpkje  Greece
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This is my Salas MC phono with 2x12R PS, under construction.
I hope to finish it soon.
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Old 12th February 2011, 04:51 PM   #5794
Salas is offline Salas  Greece
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Looks like a very careful job. Keep us posted.
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Old 16th February 2011, 08:18 AM   #5795
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Default Old resistors

It's been a while since I posted here, been lurking, though! I ran my Salas for a while, but ran out of time to play with it. Needs some serious updating; much has progressed here since 2008.

Just wondering if anyone has used old-school wire-wound precision resistors. Are they suitable for my Salas phono stage? Shallcross, IRC, etc. I've got a box full. Pic attached.

Fly not a resistive element!

-Kent
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Old 16th February 2011, 08:33 AM   #5796
Salas is offline Salas  Greece
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I don't remember anyone reporting about having used such parts. If some are wound in a non inductive manner and you can tackle the layout nicely due to their bulk considerations, why not. The cart load resistor and the series in Riaa filter one are the most detectable, you may try on those even on your existing phono and decide if they are doing something positive.
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Old 16th February 2011, 08:47 AM   #5797
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Ok. I might give them a spin.

In my 1960 parts catalog, only IRC is represented. Nowhere in their WW precision resistor data do they mention the word "inductive".

Any way to find out if they are non-inductive wound? Like giving them some DC and see if it moves a compass?
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Old 16th February 2011, 02:16 PM   #5798
Salas is offline Salas  Greece
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LCR bridge. Even if bifilar there can be some uH due to not perfect cancellation of the windings. Don't use them between the source pins and grounds for degeneration at least where is local feedback.
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Old 17th February 2011, 02:56 PM   #5799
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hello


i`ve received 2sk170 are but they are GR.i`ve selected them in a few pairs with idss from 3.5ma to 6.2ma.on the schematic of Simplistic RIAA i saw i need BL`s with idss 8-8.5ma.what should i do so i can use three of the pairs of GR`s i have ?
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Old 17th February 2011, 07:53 PM   #5800
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Quote:
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LCR bridge.
Duh! I have an old Leeds & Northrup bridge. Will check.
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