This speaker supports Apple’s WAC (Wireless Accessory Configuration) setup mode. WAC setup mode allows you to connect your speaker to your network without requiring you to type in the network name and password.
The iOS device firmware version needs to support iOS 10.0.2 or later.

On the speaker, press and hold at the top and bottom of the control ring for 3 seconds until the Halo light turns amber.

On your iOS device, go to the Wi-Fi menu under Settings.

Select “Marantz Grand Horizon”] under “SET UP NEW AIRPLAY SPEAKER...” at the bottom of the list.

Select the network you want your speaker to connect to and select “Next”.

Follow the instructions on the screen to complete setup.

HEOS system will stay in WAC setup mode for 15 minutes. If the device is not set up within 15 minutes, it will revert back to its previous network connection. Press the bottom touch button if you want to cancel WAC setup mode.

The front halo light will quickly blink 5 times.