How do I stop static noise from my car speakers?

I’m a bit of an audiophile and I recently put an aftermarket sound system in my car to indulge my love of music. But now that I’ve installed the speakers, I hear static and crackling when I turn on the stereo and between songs. How can I prevent static noise from coming from my car speakers?

Answer
Sorry to hear about the crackling and static on your speakers. This is a common problem, especially if you installed the sound system for the first time. To stop static noise from your car speakers check your connections, the alternator, and the battery.
RCA patch cables connect your speakers, head unit, and amplifier, but these are often a source of static. To find out if these are the issue, follow these steps:
  • Detach the cables from the amplifier.
  • Once you’ve detached the cables, put one side into the left and right input jacks of the amp.
  • Turn on the stereo and listen for static.
  • If this doesn’t fix the problem, make sure to keep your patch cables at least 18 inches away from the amplifier.
  • Another alternative is to upgrade to higher-quality RCA cables that have insulation and improved connectivity, which may resolve the issue.
Sometimes, your stereo system isn’t the source of static noise; it’s your car’s battery or alternator. An aging battery may need some battery fluid, a jumpstart, or total replacement.
The alternator or a faulty ignition are also common culprits of excessive static noise. Old spark plug wires or poor grounding may interfere with the speakers. In most cases, replacing the wiring or upgrading your alternator or ignition rectifies the problem. If you’re not sure what you’re doing, take your car to a mechanic or a car audio shop.
Since you’re taking meticulous care of your car, put the same effort into saving money on your car insurance with Jerry and a stereo system coverage policy. As a licensed broker, Jerry can help you find and compare quotes from over 50 providers. When you find a better rate, Jerry can help you buy your new coverage and even cancel your old policy!
Eric Schad
Answered on Nov 25, 2021
Eric Schad has been a freelance writer for nearly a decade, as well as an SEO specialist and editor for the past five years. Before getting behind the keyboard, he worked in the finance and music industries (the perfect combo). With a wide array of professional and personal experiences, he’s developed a knack for tone and branding across many different verticals. Away from the computer, Schad is a blues guitar shredder, crazed sports fan, and always down for a spontaneous trip anywhere around the globe.
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