1.Wired connection:

1.1 via 3.5mm audio out:
      If the projector is equipped with a 3.5 mm audio out mini jack, usually it is  green and marked as          Audio Out. Please connect a 3.5 mm audio cable between speaker and projector for audio output        purpose.

1.2 via S/PDIF: 

      If the model is equipped with S/PDIF port. You can connect a S/PDIF cable between your            

      speaker and projector.

2.Bluetooth connection:

If your projector is equipped with Bluetooth out function(such as X10-4K/M2, etc.), you can turn on the Bluetooth out function of the projector, paired with the Bluetooth speaker and enjoy wireless audio connection.