Clicks/Pops on 3-step switch

discussion of magnetic volume control design for both line and speaker levels.

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Carl Durrenberger
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Joined: Mon May 23, 2016 4:43 am

Clicks/Pops on 3-step switch

Post by Carl Durrenberger »

I just got a pair of the modules wired up this afternoon and am having an issue with just ONE of the modules (channels) and on the 3-step volume switch only.

Whenever I adjust volume on the 3-step switch, I hear a loud click/pop. This only happens on one of the modules, and the issue moves from L to R when I swap RCA cables. The other module always volume-adjusts on the 3-step switch with no noticeable noise.

On the noisy-switch module, I have inspected the solder work carefully to see if there are any issues on that end that could cause the clicking/popping problem, but haven't found anything.

At this point, I'm thinking I may have a module with a defective 3-step switch. Is there some way to confirm this hypothesis? If it is a problem with the switch, what would be the right way to resolve the issue?
dave slagle
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Joined: Sat Jan 22, 2005 3:54 am
Location: NYC
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Post by dave slagle »

pop me a private email and i"ll get you a new set of modules.

The thing that usually causes that problem is a DC offset from the source so try switching the cables from the source to the modules to see if that changes anything.

dave
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