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tech querry
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Please be positive and constructive with your questions and comments.

tech querry

by Andy777 on Wed Jun 26, 2019 7:34 am

Hi,

We wish to connect a Adafruit FX audio board to a Adafruit 1752 amplifier via a screened cable and the outputs to the speakers also with a screened cable.
My question is which pins would the cable screens be attached to.

Andy777
 
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Re: tech querry

by adafruit_support_bill on Wed Jun 26, 2019 8:26 am

Connect to the GND pin next to the L & R audio output pins.

Image

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Re: tech querry

by Andy777 on Wed Jun 26, 2019 9:14 am

Thanks, that is ok for the sound board but which pin/pins on the Amplifier 1752 - pin AGND or GND maybe?

Andy777
 
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Re: tech querry

by adafruit_support_bill on Wed Jun 26, 2019 9:29 am

General practice for audio signals is to ground the shields for signal wires only at the source end.

If there are no issues with ground loops, you can connect the other end to ground also.

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Please be positive and constructive with your questions and comments.