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<blockquote data-quote="Jnoble" data-source="post: 317914" data-attributes="member: 549717">I tried everything I could think of.&nbsp; I swapped wires, amps, crossover, ground locations.&nbsp; Finally I went out and bought a new Alpine with 4v pre-amp outputs, (needed a new deck anyway).&nbsp; And lety me tell you...&nbsp; if you are en experienced installer (5-10 years) and the problem is obvious and the answer is not.&nbsp; Go out and spend $300 bucks on a new alpine and all your problems will be solved (assuming you know what you are doing in the trunk).&nbsp; My new deck fixed problems I didn&#039;t even know I had.&nbsp; It cleared up low end road noise I thought was just distortion, it cleared out all the high freq. noise w/o using an isolator.&nbsp; Plus the overall clarity of alpine, I forgot how nice they really are.&nbsp; I know I said this before but this time for real:ALPINE is the only deck I will put in my car!!!!!!!oh and btw, I&#039;ve had just about every major brand HU and the only two I&#039;ve never had any problems with road noise are alpine and pioneer.&nbsp; The worst have been Kenwood and Sony.</blockquote>

[QUOTE="Jnoble, post: 317914, member: 549717"] I tried everything I could think of. I swapped wires, amps, crossover, ground locations. Finally I went out and bought a new Alpine with 4v pre-amp outputs, (needed a new deck anyway). And lety me tell you... if you are en experienced installer (5-10 years) and the problem is obvious and the answer is not. Go out and spend $300 bucks on a new alpine and all your problems will be solved (assuming you know what you are doing in the trunk). My new deck fixed problems I didn't even know I had. It cleared up low end road noise I thought was just distortion, it cleared out all the high freq. noise w/o using an isolator. Plus the overall clarity of alpine, I forgot how nice they really are. I know I said this before but this time for real: ALPINE is the only deck I will put in my car!!!!!!! oh and btw, I've had just about every major brand HU and the only two I've never had any problems with road noise are alpine and pioneer. The worst have been Kenwood and Sony. [/QUOTE]

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