Connecting speakers
Carefully check the left (L) and right (R) channels and + (red) and – (black) polarities on the speakers being connected to this unit, and be sure to connect the channels and polarities correctly.
Disconnect this unit’s power plug from the power outlet before connecting the speakers. Also, turn off any connected powered subwoofers.
Connect so that the speaker cable core wires do not protrude from the speaker terminal. The protection circuit may be activated if the core wires touch the rear panel or if the + and – sides touch each other.
Never touch the speaker terminals while the power cord is connected. Doing so could result in electric shock.
Use speakers with an impedance of 4 – 16 Ω/ohms. The protection circuit may be activated if speakers with an impedance other than specified are used.
Depending on the speakers that are connected, the protection circuit may activate and the power may be turned off when music is played at a high volume (The Status indicator flashes in red). If this happens, configure the “Volume Limit” setting. link