10 EnPREPARATIONConnecting audio devicesMake sure to connect L (left) to L, R (right) to R, “+” to “+” and “–” to “–”. If the connections are faulty, no sound willbe heard from the speakers, and if the polarity of the speaker connections is incorrect, the sound will be unnatural andlack bass. Refer to the owner’s manual for each of your components.Make sure to use RCA cables to connect audio components.CAUTION• Do not connect this unit or other components to the main power until all connections between components arecomplete.• Do not let bare speaker wires touch each other or any metal part of this unit. This could damage this unit and/or thespeakers.NoteThe input jacks are different on the R-N303 Europe model and on the R-N303D (p. 7).ConnectionsOnly PCM signals can be input to the digital (OPTICAL/COAXIAL) jacks of this unit.SPEAKERSANTENNACDGNDPHONO LINEIN OUTCLASS 2 WIRINGCABLAGE CLASSE 2A OR B:8ΩMIN. /SPEAKERABNETWORKSERVICEDIGITALOPTICALCOAXIALAMFM752OC AudioinputAudiooutputSpeakers BDVD player, etc.Audio output(digital coaxial)Audio output(digital optical)CD player, etc.AudiooutputCD playerCD recorder, etc.Speakers A(R-N303 except Europe model)TurntableAudiooutputGND