Summing inputs to 9722 Class D Amplifier?

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craigdavis
 
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Summing inputs to 9722 Class D Amplifier?

Post by craigdavis »

Hi - I am using several of the Audio FX Mini-Sound Boards (product ID 2342) to create a series of tones that I want to mix into a single output to a speaker. My thinking is to use 10K resistors at the outputs of the Mini-Sound BDs & join them at the input to the 20W Class D Amplifier 9722.

See attached sketch - can I mix the inputs to the Amplifier like this?
Circuit Diagram Summing Amplifier inputs A 100522.jpg
Circuit Diagram Summing Amplifier inputs A 100522.jpg (86.77 KiB) Viewed 63 times
Thanks for any help that you can give me.

Craig

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adafruit_support_bill
 
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Re: Summing inputs to 9722 Class D Amplifier?

Post by adafruit_support_bill »

Yes. That should work.

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craigdavis
 
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Re: Summing inputs to 9722 Class D Amplifier?

Post by craigdavis »

Thanks Bill! Much appreciated. I get confused at times in matching up outputs to inputs.

Craig

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