Resistor size in SC25

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Dutch9600
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Resistor size in SC25

Post by Dutch9600 »

I am having trouble figuring the color code on this resistor it is in a Sonographe SC25. My unit was modded and I am going back to original. Thanks for any and all help in advance.
Screenshot 2025-05-02 at 21-30-41 L'Audiotecnico Conrad Johnson - SC25.png
Screenshot 2025-05-02 at 21-33-56 Conrad Johnson Sonographe SC-25 &amp SA-250.png
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Re: Resistor size in SC25

Post by admin »

Use this calculator to give you the resistor values: https://www.digikey.com/en/resources/co ... color-code

I can't tell you by looking at the picture as the colors are always a little hard to tell with photos and I'm partially color blind!
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Dutch9600
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Re: Resistor size in SC25

Post by Dutch9600 »

My unit does not have the resistor in it after someone modded it that is why I am asking. Thanks for your help. Also can not tell if it 4 or5 band.
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Re: Resistor size in SC25

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Not sure if this is helpful but there is a good high resolution picture of the board here: https://theartofsound.net/forum/showthr ... amp-SA-250

Perhaps you can look for the mod differences between your unit and the picture.
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Main stereo: ART Amplifier and ET7s2. 2nd stereo: PV-14L and MV-55. Previously Owned: PF2 preamp, Evolution 2000 Amp, PV-12AL preamp, D/A-2b Vacuum-Tube Digital Processor.
Dutch9600
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Re: Resistor size in SC25

Post by Dutch9600 »

Been there done that, the bottom photo is of the unit that is on the thread, someone from another site said it might be a inductor. Already have figured out the mod differences and it is the inductor/resistor and cap in my first post of this page, but thanks for the help.
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