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electric noise from tweeters only when cold

another odd electric problem...

electric noise from tweeters only when cold

Postby zbkeebler [OP] » Sep 08 2017, 6:53pm

As the title says, Now that it has gotten colder out in the mornings here, I have a bit of interference fuzzy noise coming from the speakers. Goes away after about 5 minutes of running. I have a pioneer headunit and a 5 channel planet audio amp and alpine 6.5" speakers with tweeters in the front. same components in the back. and a rockford shallow 12 sub under the back seat.

anyone ever experienced anything like this? The only thing I have changed since the spring (last time it has been below 50F in the morning) on the electrical side of things is the alternator (new AC delco prof)

Not sure where to even start on diagnosing this one..
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Re: electric noise from tweeters only when cold

Postby Zrock » Sep 09 2017, 2:13am

Lol... I was just going to post the same thing.

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Re: electric noise from tweeters only when cold

Postby zbkeebler [OP] » Sep 09 2017, 2:14am

Haha well at least I'm not alone I guess
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Re: electric noise from tweeters only when cold

Postby Zrock » Sep 09 2017, 2:16am

Ya hard one to diagnose

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Re: electric noise from tweeters only when cold

Postby Zrock » Sep 22 2017, 2:34am

Figure anything out yet? Every time I go to look into it it stops...lol

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Re: electric noise from tweeters only when cold

Postby zbkeebler [OP] » Sep 22 2017, 6:57am

nothing yet. It was only cold enough to cause the issue for a few days and I am traveling in China for Work until the end of next week. Looks like the weather will be much cooler when I return so I will be able to look into it more. I am kind of thinking it is the alternator or the amp. As soon as the engine bay starts to warm up, the noise goes away, but have not tried driving for a while with the amp off to rule it out yet.
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Re: electric noise from tweeters only when cold

Postby Zrock » Sep 22 2017, 3:30pm

i was thinking fuel pump..lol.. mine only comes from what i can tell is possibly a single rear speaker or both.. But i have my front and rear speakers reversed as the Bluetooth sounds like crap when hooked to my front components with tweets
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Re: electric noise from tweeters only when cold

Postby mrmidnight273 » Sep 22 2017, 3:59pm

Bad grounds like to show their ugly heads when it is cold outside. I won't go into the meteorological reasoning behind this (unless you want) but what I suggest is modifying your grounds. Make sure all your grounds for your ME equipment are to the same ground, and don't use that little black wire for the radio as the ground for everything. Go and get a good gauge wire to use as a ground, wrap it in electrical tape to shield it, and solder your wires to that and secure it to a non-painted surface. Obviously if one of your grounds is at the front of the truck and another is at the rear, just make sure to put both grounds to the body.
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Re: electric noise from tweeters only when cold

Postby Zrock » Sep 23 2017, 1:53am

I was thinking grounding issue... but that would effect all speakers on the same source not just 1/2 or just 1... makes me think a motor of some sort is on its way out that is close to that specific wire and it's bleading through... or one of the speaker wires has rubbed through... but that should also give static consistently

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Re: electric noise from tweeters only when cold

Postby mrmidnight273 » Sep 24 2017, 4:26am

I would still check the ground. Reason being is that electricity follows the path of least resistance, if it finds easier grounds somewhere else, it will go there. Tis possible that it's finding an alternate ground and the sound you hear is it trying to pass through a painted surface or an inappropriate ground.
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