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<blockquote data-quote="AlterEgo99" data-source="post: 5978615" data-attributes="member: 610253">The OEM secret is that they are waaaaaaaaaaaay underpowered.&nbsp; Even with the &quot;Bose&quot; system in my &#039;08 Silverado, the amplification in such a system is minimal at best.The problem arises when we start adding 100W, 500W, 1000W+ amps into our vehicles.&nbsp; It&#039;s called an &quot;amplifier&quot; for a reason.&nbsp; It &quot;amplifies&quot; the signal.&nbsp; The noise was probably always there but the OEM HU was so weak you would never hear it.&nbsp; Add some aftermarket amps and let the whining begin!Don&#039;t get too disheartened, I certainly was not.&nbsp; It&#039;s a common issue and there are very clear steps one can take to resolve it.&nbsp; I have since also placed a noise filter on the HU ignition line.&nbsp; I will also be performing the &quot;Big 3&quot; in a couple weeks, and any noise left is sure to disappear.Right now, it is so slight I have to turn the volume way past what I would normally listen to my tunes at anyhow.&nbsp; And only if you are really listening, while the truck is at a stop, and no music is playing on the iPod source.&nbsp; And even then it is barely audible.&nbsp; More than acceptable IMHO.Plus, issues like this keeps us busy messin&#039; with the system...it ain&#039;t ever &quot;done&quot; anyways!&nbsp; //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif</blockquote>

[QUOTE="AlterEgo99, post: 5978615, member: 610253"] The OEM secret is that they are waaaaaaaaaaaay underpowered. Even with the "Bose" system in my '08 Silverado, the amplification in such a system is minimal at best. The problem arises when we start adding 100W, 500W, 1000W+ amps into our vehicles. It's called an "amplifier" for a reason. It "amplifies" the signal. The noise was probably always there but the OEM HU was so weak you would never hear it. Add some aftermarket amps and let the whining begin! Don't get too disheartened, I certainly was not. It's a common issue and there are very clear steps one can take to resolve it. I have since also placed a noise filter on the HU ignition line. I will also be performing the "Big 3" in a couple weeks, and any noise left is sure to disappear. Right now, it is so slight I have to turn the volume way past what I would normally listen to my tunes at anyhow. And only if you are really listening, while the truck is at a stop, and no music is playing on the iPod source. And even then it is barely audible. More than acceptable IMHO. Plus, issues like this keeps us busy messin' with the system...it ain't ever "done" anyways! [IMG]//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif[/IMG] [/QUOTE]

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