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How to troubleshoot ignition noise?
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<blockquote data-quote="AudioGeek" data-source="post: 8126175" data-attributes="member: 655445"><p>****. That's funny because I got rid of my Pioneer that was working fine.. and got this Alpine with the noise. The Pioneer actually wasn't working fine though, it was only outputting low frequencies out of the preout. It had no low pass filter on it, so I think I had just blown the outputs or something, because there was one hot day where the head unit shut down after playing a lot of loud music. (still had my mids and tweeters powered off the deck) The Pioneer did have no noise though, that was nice. And it was running to a factory ground. I had to make a new ground for this head unit, and it still won't work.</p><p></p><p>I really rather not swap head units again though, because then I'd have to get a new wiring harness and cut/splice/run my speaker wires all over again. (I ran my speaker wires from the harness just so it would be easy to switch it back if I ever sold the car). The wiring harness has been cut about 4 times, just since I had the car, for various reasons, so there's no slack left on it.</p></blockquote><p></p>
[QUOTE="AudioGeek, post: 8126175, member: 655445"] ****. That's funny because I got rid of my Pioneer that was working fine.. and got this Alpine with the noise. The Pioneer actually wasn't working fine though, it was only outputting low frequencies out of the preout. It had no low pass filter on it, so I think I had just blown the outputs or something, because there was one hot day where the head unit shut down after playing a lot of loud music. (still had my mids and tweeters powered off the deck) The Pioneer did have no noise though, that was nice. And it was running to a factory ground. I had to make a new ground for this head unit, and it still won't work. I really rather not swap head units again though, because then I'd have to get a new wiring harness and cut/splice/run my speaker wires all over again. (I ran my speaker wires from the harness just so it would be easy to switch it back if I ever sold the car). The wiring harness has been cut about 4 times, just since I had the car, for various reasons, so there's no slack left on it. [/QUOTE]
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