Interference noise in speakers

[jbh350]

Hello all, <br />I am experiencing a humming noise in my stereo speakers when ever I run my fridge or battery charger. Any suggestions?<br />Thanks

 

[LubeDude]

Re: Interference noise in speakers

Turn off the stereo!<br /><br />No, seriously, you can get a filter from Radio shack that will solve your problems, dont by the cheapest one.

 

[ndemge]

Re: Interference noise in speakers

Lube's got it.<br /><br />What your looking for is called a "ground loop isolator" ... <br />Radio shack sells 2 types, small canister looking one for low amp, and a larger square one for higher amperage.<br /><br />I always have to put these on my car stereo's to get rid of interference.<br /><br />If you are running an amp far away from your head unit, you may need to get one inline for the RCA lines as well.

 

[BayStealth]

Re: Interference noise in speakers

The filters are the best first fix, if it still doesn't go away you need to check the grounds that are feeding your components. If they are all grounded together, you need to separate them and individually ground them. Also, if you can, try to make the ground circuit as short as you can. Also, do not have power wires attached to speaker or RCA cables, like taped together or zip tied together. This can cause the wire to get interference directly from the power wires.

 

[18rabbit]

Re: Interference noise in speakers

Filtering the source of the interference (fridge motor and battery charger) is preferred to keep the ‘system’ clean. Alternatively, you can filter the radio/stereo. Read this:<br /><br /> http://www.newmarpower.com/pdf/Manual-PC Filters.pdf <br /><br />Newmar makes really good, top-o-the line stuff. I use a couple of the Newmar 150-amp filters; one on each alternator.<br /><br /> http://www.newmarpower.com/noisefilters/noisefilter.html

 

[jbh350]

Re: Interference noise in speakers

Thanks for all the advise, I will try filtering the noise.