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Wiring, Electrical & Installation
Engine whine and ground loop fixes... take two
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<blockquote data-quote="SMFJ" data-source="post: 7673470" data-attributes="member: 627547"><p>you just saved my radio and wallet. the old pioneer 4100ub thanks you. got a little ballsy today and ran my dual 1 sub in parallels on my q4.150 rears with the LPF. it didn't protect but in those 7 or 8 minutes my amp got hot as a ***** in heat so i cut everything off and let her cool off and ran every thing back to normal and as soon as i cut on my deck with volume at 00 i was getting awful engine and electrical squeals and whining. thought screwed my amp up back ran a 3.5mm to rcas from the iPhone and noise was gone. popped out the head unit and barely tapping the rcas could trigger the noise. grabbed a random piece of 18 gauge i had slid it between male and female rcas and as long as i physically touching the other end no noise at all. after reading this sticky i will be doing it correctly in the morning.</p><p></p><p>EVEN IF YOUR 2 OHM STABLE 4 CHANNEL WILL PUSH A SPEAKER AT .7OHM DON'T OR ELSE INCONVENIENCING ***** LIKE THIS HAPPENS. //content.invisioncic.com/y282845/emoticons/slap.gif.87520e8ca8e90076ac30e777c0de5331.gif Lesson learned.</p></blockquote><p></p>
[QUOTE="SMFJ, post: 7673470, member: 627547"] you just saved my radio and wallet. the old pioneer 4100ub thanks you. got a little ballsy today and ran my dual 1 sub in parallels on my q4.150 rears with the LPF. it didn't protect but in those 7 or 8 minutes my amp got hot as a ***** in heat so i cut everything off and let her cool off and ran every thing back to normal and as soon as i cut on my deck with volume at 00 i was getting awful engine and electrical squeals and whining. thought screwed my amp up back ran a 3.5mm to rcas from the iPhone and noise was gone. popped out the head unit and barely tapping the rcas could trigger the noise. grabbed a random piece of 18 gauge i had slid it between male and female rcas and as long as i physically touching the other end no noise at all. after reading this sticky i will be doing it correctly in the morning. EVEN IF YOUR 2 OHM STABLE 4 CHANNEL WILL PUSH A SPEAKER AT .7OHM DON'T OR ELSE INCONVENIENCING ***** LIKE THIS HAPPENS. [IMG]//content.invisioncic.com/y282845/emoticons/slap.gif.87520e8ca8e90076ac30e777c0de5331.gif[/IMG] Lesson learned. [/QUOTE]
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Engine whine and ground loop fixes... take two
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