Trying to get sound from ik900 projector to the soundbar and subwoofers

[pkerph]

Trying to get sound from ik900 projector to the soundbar and subwoofers

 

[americanaudiophile]

You will need to get audio from your sources not the projector. Projector doesn't have any audio out as far as I can tell.
You may need an HDMI input selector with audio extraction.