Denon AVR-990 Owners Manual - English - Page 15

ENGLISH Getting Started Connections Settings Playback ZONE2 Remote Control Information Troubleshooting Specifications Speaker Connections Front speakers A Center speaker Surround speakers Subwoofer Front speakers B (L) (R) w qw q wq (L) (R) w qw q Subwoofer with built-in amplifier */ (L) (R) w qw q 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-990, 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 Turnthespeakerterminal counterclockwise to loosen it. About Bi-amp Connections These connections make for higher quality playback sound with no interference between the signals of the bass and treble units. When the "Amp Assign" setting (vpage 33) is "Front A Bi-Amp" or "Front B Bi-Amp", connect as follows. (The illustration shows a connection example for the Front A Bi-Amp speakers.) Front speakers A qw q w (L) (R) AVR-990 For connections of the SURR. BACK/AMP ASSIGN speaker terminals, see "Set the "Amp Assign" Mode According to the Speaker Layout" (vpage 11). Protection Circuit If the core wires touch the rear panel and the screws etc., or the ± sides touch each other, the protection circuit will be activated and the power indicator will flash red at intervals of 0.5 secs. If the protection circuit is activated, the speaker output is isolated, and the power supply goes to the standby state. If the power supply is turned off, after the power supply cord is withdrawn, please confirm that speaker cable and input cable are connected. Also, if replaying large sound levels by using a speaker having an impedance less than that specified (eg, 4 Ω/ohms), the temperature will rise, and the protection circuit might be activated. The power supply will go into the standby state, and the power indicator will flash red at 2 second intervals. In this case, please switch off the power supply, and wait until the AVR-990 has cooled down, and the surrounding ventilation is good. Even if there are no problems with the surrounding ventilation and connections, in the event of the protection circuit becoming activated, due to thinking that the AVR-990 has failed, please contact DENON Service center after switching off. 3 Insert the speaker cable's core wire to the hilt into the speaker terminal. 4 Turn the speakerterminal clockwise to tighten it. n When using a banana plug Tighten the speaker terminal firmly before inserting the banana plug. 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 8 to 16 Ω/ ohms. When in the "Front A Bi-Amp" and "Front B BiAmp" modes, the same signals are output from the front speaker terminals and the AMP ASSIGN terminals. NOTE • Use speakers compatible with bi-amp connections. • When making bi-amp connections, be sure to remove the short-circuiting plate or wire between the speaker's woofer and tweeter terminals. NOTE • 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 (v"Protection Circuit"). • Never touch the speaker terminals while the power supply is connected. Doing so could result in electric shock. 12