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I want to take 3.5mm jack output to speaker for a baby phone application. But I'm not able to find any solution for connecting a small external speaker to an audio codec board.

I tried connecting 2 watt speaker but I'm not able to drive it.

Can anybody send me circuit diagram to connect class D amplifier to 3.5mm jack?

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  • My guess is that the RPi doesn't put enough power out to properly drive a 2W speaker without an external power source.
    – Jacobm001
    Commented Aug 6, 2017 at 20:39

1 Answer 1

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Here you can find the signal configuration in the 3.5mm audio jack:

http://www.raspberrypi-spy.co.uk/2014/07/raspberry-pi-model-b-3-5mm-audiovideo-jack/

And more information about the electrical specification:

What are the specifications for the audio output?

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