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Sansa - prolonged electrical noise when loading tracks

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dedalus:
150 ohm in serial is doing the trick for me on my SE310s. Noise is all but gone and the zero-point in the RB volume control is much more sensible. Haven't measured the effect on the frequency response but it seems to be neglible, any detriment could be corrected in EQ anyway. I'm just using a hand-matched pair of 5% tolerance carbon film from Radio Shack atm.

arwa:

--- Quote from: dedalus on October 05, 2007, 08:03:01 PM ---150 ohm in serial is doing the trick for me on my SE310s.
--- End quote ---
This is interesting, I had this idea as well but did not try it yet. How did you install the resistor? Is it in a separate plug adapter or did you build it into the sansa somehow?

It would be nice if you could give some instructions for doing this mod, too.

Thanks,
arwa

dedalus:
I made an inline adapter. It would be easier for me just to post pics of a mock-up with the leftover parts. You are probably going to want to use metal film resistors and gold-plated jacks but here is the basic idea:



The ground posts are just soldered directly together (pinch the clamp on one and tin both clamps, squeeze it into the other clamp and heat). Bend the terminals out a bit and thread the resistor legs through (these are the screw-type terminals) then solder each. Make sure to hand match the resistors with your ohmmeter (I took the best pair out of 10).

Here it is the one I used, set with epoxy and wrapped in heatshrink:



My SE310s already have a breakaway cable so I slip this inline there.

arwa:
Oh, btw: Does anybody know, if the Sansa c200 series does have this electrical noise problem, too?

just_me:
would it be possible to try to fix this within the player itself?

Like soldering a condensator to a strategic place?

Greetings,
Frieder

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