Underneath the Platin subwoofer, you will see the panel below. Hold the CH button until the panel reads 70, then you will be able to adjust the volume up and down using the CH and SPK buttons.
Underneath the Platin subwoofer, you will see the panel below. Hold the CH button until the panel reads 70, then you will be able to adjust the volume up and down using the CH and SPK buttons.