Some TVs are not compatible with the HYPERBOOM speaker. An optical cable is always the preferred method to connect your HYPERBOOM to a TV. Optical connection offers the lowest latency to minimize lip-sync problems. When an optical connection is not available, use the TV line out/headphone output jack instead and connect it to the Aux input on HYPERBOOM. Aux offers significantly lower latency than Bluetooth and would be preferred to Bluetooth connection.