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Old 3rd July 2014, 09:42 PM   #1
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Default Help with minor ground loop when both RCA connectors are grounded

Hi have a minor ground loop that I'm trying to 100% eliminate in my amp build that only happens when both RCA connectors are connected. With a single connector, the ground loop is gone (speaker dead silent). Can someone provide a suggestion on what to change in my grounding setup? I have a diagram of the connections attached.
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Old 4th July 2014, 12:01 AM   #2
rayma is online now rayma  United States
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Quote:
Originally Posted by Fusion916 View Post
Hi have a minor ground loop that I'm trying to 100% eliminate in my amp build that only happens when both RCA connectors are connected. With a single connector, the ground loop is gone (speaker dead silent). Can someone provide a suggestion on what to change in my grounding setup? I have a diagram of the connections attached.
Try 10 Ohms between each RCA ground shell and ground. Float the RCA jacks from the chassis, if they aren't already. Should work.
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Old 4th July 2014, 07:01 AM   #3
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Disconnect one of the internal ground and short the two RCA grounds to each other.

Gajanan Phadte
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Old 4th July 2014, 05:05 PM   #4
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Remove the Star Ground from the Power Supply.
Locate the Main Audio Ground (MAG) near the input jacks and connect the MAG to the chassis near the I/O jacks.
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