Denon AVR 688 Owners Manual - English - Page 12

Getting Started Connections Setup Playback Remote Control Multi-Zone Information Troubleshooting ENGLISH Speaker Connections Example: 5.1-channels (FRONT A+B) and ZONE2 use Subwoofer Front speakers A Front speakers B Subwoofer with built-in amplifier */ (L) wq (R) wq (L) wq (R) wq Center speaker wq Connecting the Speaker Cables Carefully check the left (L) and right (R) channels and + (red) and - (black) polarities on the speakers being connected to the AVR-688, and be sure to interconnect the channels and polarities correctly. 1 Peel off about 0.03 ft/10 mm of sheathing from the tip of the speaker cable, then either twist the core wire tightly or terminate it. 2 Turn the speaker terminal counterclockwise to loosen it. 3 Insert the speaker cable's core wire to the hilt into the speaker terminal. Protection circuit If speakers with an impedance lower than specified (for example 4 Ω/ohms speakers) are used for an extended period of time with the volume turned up high, the temperature may rise, activating the protection circuit. When the protection circuit is activated, the speaker output is shut off and the power indicator flashes red. If this happens, unplug the power cord, then check the speaker cable and input cable connections. If the set is extremely hot, wait for it to cool off and improve ventilation around it. Once this is done, plug the power cord back in and turn the set's power back on. If the protection circuit is activated again even though there are no problems in the ventilation around the set nor in the connections, the set may be damaged. Turn the power off, then contact a DENON service center. 4 Turn the speaker terminal clockwise to tighten it. When using a banana plug Tighten the speaker terminal firmly before inserting the banana plug. b L : Left R : Right (L) (R) (L) (R) w qw q Surround speakers w qw q ZONE2 speakers ZONE2 When using just one surround back speaker, connect it to the left channel (SBL). NOTE By default, the AVR-688's "Amp Assign" setting is set to "ZONE2". To use as the surround back speaker for the main zone, change the "Amp Assign" setting (vpage 27). NOTE • Use speakers with an impedance of 6 to 16 Ω/ohms. When using front A and B speakers simultaneously, use speakers with an impedance of 12 to 16 Ω/ohms. • Connect the speaker cables in such a way that they do not stick out of the speaker terminals. The protection circuit may be activated if the core wires touch the rear panel or if the + and - sides touch each other (v "Protection circuit"). • Never touch the speaker terminals while the power supply is connected. Doing so could result in electric shock.