BenQ TK700STi No Sound Troubleshooting

If you connect a speaker to the BenQ TK700STi projector, but there is no sound that can be heard. You can try the following solutions for troubleshooting.

Check whether the HDMI cable supports ARC/eARC. Try to use an HDMI cable with ARC or eARC.
Check whether the HDMI interface that you are using supports ARC/eARC or not, and change the HDMI cable to the other port with ARC/eARC feature.

Check whether the ARC/eARC is enabled or not on the projector and your device.
Check whether the audio format is supported by the BenQ TK700STi projector or not.
Check whether the cable is well connected.