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Old 01-12-2015, 12:00 PM   #1
DMahoney
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Weirdest noise I've ever heard on an e46 - what is it (sub related)

So I've heard there's whining noise that increased with acceleration and at the time my jet sucking pump, part of the vacuum system or whatever, was broken so I attributed it to that..

I got it fixed and I didn't hear it for a while until I broke hard couple weeks ago. Then I started hearing it again and I thought maybe something messed up with the repairor something. Then I started to think about it a few days later that when I Brocard, my rear seat fell down in my coupe because I was working back there cleaning and never locked into place. Then I realized I couldn't hear the sound when the bench was upand locked position, but I could if the bench was down. I kept hearing it for a few days finally I went back there and disconnected the sub woofer is that I had and all of a sudden the sound was gone. And if I connect them back the sound of peers. I don't know much about audio but I was wondering what this could be?

I spliced the sub of a box off the rear deck speakers and whatever whatever, the amp still has power when the sub will for wire is it taking out of the back of the box but there's no noise. It's only when I put those two wires in the back of each 12 inch sub will for that the noise appears. Can you want help?
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Old 01-12-2015, 01:58 PM   #2
tim330i
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I've moved this over to the electronics forum for you, you'll get more help in here.

Tim
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Old 01-13-2015, 01:47 PM   #3
Alex323Ci
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well usually a whirling sound out of speakers that increases with rpm is coming from the alternator. this could be fixed with a noise suppressor or even by a better ground. but since you're spliced into the other speakers it's probably easier to fix. audio is not my expertise but I'm sure some audiophiles here should have this answered easily.

also you might want to proofread your post prior. I had a very difficult time understanding it, basically guessing what I think you tried to say.
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Old 01-14-2015, 09:06 AM   #4
DMahoney
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I have a brand-new alternator was just put in last week
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Old 01-21-2015, 08:39 AM   #5
DMahoney
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I guess the noise is in as weird as I thought. I showed it to my dad and he told me that that used to happen all the time back in the day with the old cars when they would hook up a radio. I guess it is some type of interference. We don't know how to fix it on my car because I basicallyspliced off the rear deck speakers to install my amp and sub woofer box. Anyone have any ideas on how I can get rid of this interference?
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Old 01-21-2015, 08:40 AM   #6
DMahoney
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It's making the noise in regards to the alternator, yes but it is not a bad alternator. It was doing it before my alternator went bad and after. Back in the day used to do it when they used to have generators in the car but it's basically going with The alternator motor upon acceleration..what should I do?
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