Connect your 7.1 (or 5.1) speaker setup, ensuring positive (+) and negative (-) terminals match.

Use the Input Selector knob or remote to select your source (HDMI 1, DVD, etc.).

Use the AUTO/ALC/DIRECT button or STANDARD button to toggle surround modes.

If the unit is unresponsive, hold down the BAND button and press STANDBY/ON on the front panel to reset to factory settings. Where to find the Full Manual

Ensure HDMI CEC is active on TV/receiver, or check that input assignment matches the cable.