I have a regular system with 4 speakers and an amp. I get the whine, more when i rev. I tried grounding every part better, but no luck. Alternator, from autozone, is about a year old. I'd rather not use a filter if possible, as I'm assuming it will affect the sound. Is this true? What else can I check?
Is any radio buzz, noise preventable?
- Thread starter daves66nova
- Start date
Can you wire the radio directly to the battery rather than through the fuse panels ?
I think that it is, but I'll double check.
chances are the alternator could be more noisy than normal. It probably does not have or it's too small of a noise filter/choke on the alternator output. Try and get a noise filter on the power lead to the radio, it shouldn't reduce any of the audio performance, it should clean it up. Any time I've used a noise filter the sound was better. Since the whine you're hearing is basically "dirty" electricity being transmitted through the power line. Most of your factory alternators have noise chokes on them.
crutchfield.com would be a good source to look at for noise filters. I also saw you mentioned an amp, make sure your gains are set correctly, if the gains are too high it will magnify the alternator whine. Definitely need a noise filter on both the radio and the amp. It's a guessing game when troubleshooting the noise, first try the filter on the amp.. then try it only on the radio, then both. See which one will remove the noise.
Ok, I will try those good ideas. Thanks to all!
Alternator whine is a sign one of the diodes in it is bad even though it is still charging. Been there.
Installing an inexpensive noise suppression filter on the 12v (+) power line to your stereo/amp will not diminish the audio quality at all.
It is a simple wiring scheme as shown below:
It is a simple wiring scheme as shown below:
Electrical noise in general is most often a ground issue. Try running a ground wire from the radio directly to the cars chassis, or depending on how hard all the way back to the battery.
