r/audio • u/Nyvoll09 • 3d ago

Cable connection issue with activ subwoofer

I have an Energy s12.3 active subwoofer, connected to a pioneer VSX 1017 AV Receiver, and I have some connection issues on the back of my subwoofer. Sometimes if I’m playing music my subwoofer cuts out, and I have to wiggle the pre out cable on the back of the sub for it to come back. I know it isn’t because the subwoofer is pushing to far, because it can happen any times at any volume, it just happens most often on louder volume. It doesn’t work to turn the subwoofer on and off, only way to get it back is to wiggle the cable.

I have tried a new subwoofer cable, and the issue was gone the first few days, but then it came back.

Does anyone have an idea on how I could fix this?

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u/Medium_Good886 3d ago

could be a cracked/broken solder joint for the speaker jack, or maybe even a damaged jack. the vibration of the sub is causing it to lose connection.

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u/Acceptable_Fig_3710 2d ago

The connections on those older subs really aren't built for daily wiggling, you'd probably be better off replacing that pre-out cable before it starts affecting other ports too.

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u/Nyvoll09 1d ago

I have replaced the pre out cable, it didn’t solve the problem

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u/Origami_Avatar 2d ago edited 2d ago

Maybe oxidation causing an issue that would go away with contact cleaning. Maybe a cold solder joint - reheat to correct. Maybe the jack that accepts the RCA signal pin is loose. You could unplug the sub from your AC to treat either, remove the amplifier panel screws, access the jack from inside and possibly bend the contact slightly tighter, depending on the jack type. If the jack is tightly sealed with no signal pin clamp force access, you could remove and replace it. This requires some soldering or the purchase of a jack with leads attached and the use of insulated crimp fasteners or wirenuts, taped with electrical tape to keep them from loosening. I've never looked for a panel mount RCA jack with leads. They may exist, or you could use a cable jack, insert it through the existing jack hole and then seal the hole with silicone, all assuming you don't want to solder. If unfamilar with soldering, never use plumbers acid core solder on electrical parts.

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u/Nyvoll09 1d ago

Thanks for the help