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Old 7th February 2016, 02:28 AM   #1
vizion is offline vizion  United States
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Default TDA1543 and shhhhh noise

Hi All,

Iím playing with an i2s source with only 3 wires. B clock, Word clock and Data. On my TDA1543 DAC with i2s input, I see 2 GND lines. I just ignored them.
Thereís no music coming out. I can only hear shhhhhh noise. Any ideas ?

Thanks in advance.

Eric
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Old 7th February 2016, 03:03 AM   #2
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It looks like I have to connect all the GND lines from the I2S source and the DAC
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Old 7th February 2016, 05:14 AM   #3
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One GND line would do it.
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Old 7th February 2016, 02:54 PM   #4
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There is no such thing as a voltage. You have also just discovered that there is no current without a circuit. Mr. Kirchoff had something to say about these two issues.
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Old 7th February 2016, 11:17 PM   #5
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It worked. Thanks, Abraxalito. I hooked the TDA1543 DAC to an Airplay receiver. Sounds awesome. This is my first foray into zero sampling DACs.
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Old 7th February 2016, 11:21 PM   #6
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You're welcome, have fun on your further journey into NOS delights.
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Old 7th February 2016, 11:25 PM   #7
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This DAC replaced my Arcam AirDAC. The Arcam is too clean sounding, treble over-resolution (if there's such a thing)
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Old 7th February 2016, 11:30 PM   #8
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The TDA1543 is fairly sensitive to its power supply quality. You can improve the SQ with more caps on the supply if you're up for tweaking.
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Old 7th February 2016, 11:33 PM   #9
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Which is better ? battery power supply or a super duper shunt regulated psu ?
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Old 7th February 2016, 11:48 PM   #10
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It would depend on the precise details of the implementation.
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