Rank: Member
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Joined: 11/25/2013(UTC) Posts: 4 
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The opus is assembled, nice so far the problem is there is a crackling noise on the left channel. If I switch the left opus in mono mode to right and the right to left its still on the left side ( Im wondering if this makes sense) A Toslinkmodul is used to feed the transceiver the noise is not there when I play a cd with no sound. I also change the source sony cd player / macpro still crackling. I hope somebody can help because the dac like this is not very useful best hironimo Edited by user Sunday, December 15, 2013 7:49:41 PM(UTC)
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Rank: Administration
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Joined: 10/24/2006(UTC)
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Location: Massachusetts, USA
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Cool build.
I assume that red wire attached to the standoffs is a ground. Try removing that.
Here is my reasoning:
First, the mounting pads are isolated, so there is no grounding advantage to having it there. Also, you symptom sounds like I2S nose injection into the power supply lines. I think you are having noise injected into your audio ground from that connection next to the I2S lines.
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