Denon AVR-1506 Operating Instructions Manual

Also see for AVR-1506: Brochure & specs Operating instructions Service manual

ENGLISHENGLISHEasy Operation Easy Operation5Speaker connections• Connect the speaker terminals with thespeakers making sure that like polarities arematched (< with <, > with >). Mismatchingof polarities will result in weak central sound,unclear orientation of the various instruments,and the stereo image being impaired.• When making connections, take care thatnone of the individual conductors of the speakercable come in contact with adjacent terminals,with other speaker cable conductors, or withthe rear panel.2 Speaker impedance• When speaker systems A and B are usedseparately, speakers with an impedance of 6to 16 Ω/ohms can be connected for use asfront speakers.• Be careful when using two pairs of frontspeakers (A + B) at the same time, sincespeakers with an impedance of 12 to 16Ω/ohms in this case must be used.• Speakers with an impedance of 6 to 16Ω/ohms can be connected for use as centerand surround and surround back speakers.• The protector circuit may be activated if theunit is operated for long periods of time athigh volumes when speakers with animpedance lower than the specifiedimpedance are connected.Protector circuitThis unit is equipped with a high-speedprotection circuit. The purpose of this circuitis to protect the speakers under circumstancessuch as when the output of the poweramplifier is inadvertently short-circuited anda large current flows, when the temperaturesurrounding the unit becomes unusuallyhigh, or when the unit is used at high outputover a long period which results in anextreme temperature rise.When the protection circuit is activated, thespeaker output is cut off and the powersupply indicator flashes. Should this occur,please follow these steps: be sure to switchoff the power of this unit, check whetherthere are any faults with the wiring of thespeaker cables or input cables, and wait forthe unit to cool down if it is very hot.Improve the ventilation condition around theunit and switch the power back on.If the protection circuit is activated againeven though there are no problems with thewiring or the ventilation around the unit,switch off the power and contact a DENONservice center.Note on speaker impedanceThe protector circuit may be activated if theunit is operated for long periods of time athigh volumes when speakers with animpedance lower than the specifiedimpedance (for example speakers with animpedance of less than 4 Ω/ohms) areconnected. If the protector circuit isactivated, the speaker output is cut off. Turnoff the unit’s power, wait for the unit to cooldown, improve the ventilation around theunit, then turn the power back on.NOTE:NEVER touch the speaker terminalswhen the power is on. Doing so couldresult in electric shocks.Connecting the speaker cables1. Loosen by turningcounterclockwise.2. Insert the cable.3. Tighten by turningclockwise.Connecting banana plugsTurn clockwise totighten, then insertthe banana plug.Banana plug> << >> << >> <> < > <> < > <IN(L) (R)(L) (R)(L) (R)(L) (R)2 ConnectionsWhen making connections, also refer to the operating instructions of the other components.Connection terminalfor a subwoofer withbuilt-in amplifier.Surround speakersystemsSubwooferFront speakersystems (B)Precautions when connecting speakers:If a speaker is placed near a TV or videomonitor, the colors on the screen may bedisturbed by the speaker’s magnetism. Ifthis should happen, move the speaker awayto a position where it does not cause thiseffect.NOTE:• When using only one surround backspeaker, connect it to the left channel.Front speakersystems (A)CenterspeakerSurround backspeaker systemsTo achieve Dolby Digitalplayback effect, use a unitthat can sufficiently reproducefrequencies of under 80 Hz.