Question about Teufel Ultima 40 Aktiv

You can use the Ultima 40 Active for your projector by connecting it to your TV via an HDMI ARC connection. However, direct connection to a projector is not possible as the speakers do not provide their own HDMI output signal for the projector. It is possible to connect to an Apple TV box via Bluetooth, as the Ultima 40 Active supports Bluetooth. So you can stream music or audio from your Apple TV box via Bluetooth, but for video content a TV would be required to transmit the sound via ARC.