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Stock head unit problems
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<blockquote data-quote="srrueve" data-source="post: 8830579" data-attributes="member: 688241"><p>Head unit is stock Sony sync 3 Fiesta St</p><p>Speakers are 6.5” focal (haven’t put in tweeters yet)</p><p>Amp is a Memphis audio street reference 150x2 </p><p></p><p>So I finished installing my amp and everything and i now have a high pitched whine coming from my speakers. </p><p></p><p>I don’t believe it’s a ground loop, I had alternator whine as well with that whine but the alternator whine went away after finding a better ground, but the constant whine stayed.</p><p></p><p> I have to keep the head unit stock because it’s too integrated into my car so I can’t try a different head unit. I tried grounding the head unit to the amps new ground and no change.</p><p> </p><p>I also have to use the stock speaker wiring as there is plugs from both sides of the cab containing all of the wires for the doors.</p><p></p><p>I am using a high input that plugs into the amp. Tried a line out converter and same thing was happening. Happens with both a loc and the high input on the amp. Did not go away with ground isolator either.</p><p></p><p>What I am asking now is would it be the head unit causing the noise, or would it be something else? Any potential solutions I would like to hear as well</p></blockquote><p></p>
[QUOTE="srrueve, post: 8830579, member: 688241"] Head unit is stock Sony sync 3 Fiesta St Speakers are 6.5” focal (haven’t put in tweeters yet) Amp is a Memphis audio street reference 150x2 So I finished installing my amp and everything and i now have a high pitched whine coming from my speakers. I don’t believe it’s a ground loop, I had alternator whine as well with that whine but the alternator whine went away after finding a better ground, but the constant whine stayed. I have to keep the head unit stock because it’s too integrated into my car so I can’t try a different head unit. I tried grounding the head unit to the amps new ground and no change. I also have to use the stock speaker wiring as there is plugs from both sides of the cab containing all of the wires for the doors. I am using a high input that plugs into the amp. Tried a line out converter and same thing was happening. Happens with both a loc and the high input on the amp. Did not go away with ground isolator either. What I am asking now is would it be the head unit causing the noise, or would it be something else? Any potential solutions I would like to hear as well [/QUOTE]
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