Sanwu TDA7492 and volume potentiometer

Hello everybody

After a long time of research, I would like to solicitthe diyaudio community for this question.

I would like to add a volume log potentiometer to my Sanwu TDA7492 + CSR8635 bluetooth board (please find attached a picture of my board).

Indeed, I want to add a volume potentiometer before the TDA7492 amplifier in order to change the volume, no matter the source (in my DIY project, the board is connecting permanently to the aux input and the bluetooth input, and the source is chosen by a manual switch).

I would like to know if it is possible, and where can I add a volume potentiometer to control the volume.

Thank you in advance for your help.

Note : For my project, I work in Mono. I flashed the CSR8635 Bluetooth module to work in Mono only. So I guess I will only use the L channel at the end. So I want to know how to wire a single potentiometer of 22k resistor.

An externally hosted image should be here but it was not working when we last tested it.


tda7492_circuit_diagram_pinout_pin_connections_2_16c.jpg
 
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