Connect the left side +/- with a jumper and the right side +/- with another jumper. Then connect your speakers plus terminal to the left side and the minus terminal to the right side. Also, remember to change the settings in the web menu or via the RS-232/LAN codes, and remember to save the settings!
When you have done these steps, turn the amplifier OFF by removing the power and reboot.
Activate "Bridge Mode" on the "Output Page"
Go to system and press "Save Settings" and reboot the device in order for this to take effect.