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Car Audio Help
Wiring, Electrical & Installation
Bad grounding? Buzzing sound in accessory position
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<blockquote data-quote="idkcaraudio" data-source="post: 8710014" data-attributes="member: 680303"><p>yup ofc, basically my headunit gives speaker level outputs, and one of my amps had a speaker level input. The input for the amp had five wires coming out of it; pos and neg for the left channel, pos and neg for the right channel, and a middle black wire which I assumed was the ground. Initially, I had connected the middle black ground wire to the same location where my amps were grounded. I got buzzing at all times with the key in the ignition from the speakers. Later, just to see if it would change anything, I disconnected the middle black wire from the grounding point and found that there was no buzzing anymore at all. I ended up just cutting the middle black wire off and it's working fine now. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="idkcaraudio, post: 8710014, member: 680303"] yup ofc, basically my headunit gives speaker level outputs, and one of my amps had a speaker level input. The input for the amp had five wires coming out of it; pos and neg for the left channel, pos and neg for the right channel, and a middle black wire which I assumed was the ground. Initially, I had connected the middle black ground wire to the same location where my amps were grounded. I got buzzing at all times with the key in the ignition from the speakers. Later, just to see if it would change anything, I disconnected the middle black wire from the grounding point and found that there was no buzzing anymore at all. I ended up just cutting the middle black wire off and it's working fine now. :) [/QUOTE]
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Bad grounding? Buzzing sound in accessory position
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