16SubwoofersystemMain B speakerCenterspeakerRightRear speakerSUBWOOFER jackWhen using a subwoofer with built-in amplifier, including the YAMAHA Active Servo Processing Subwoofer System,connect the input jack of the subwoofer system to this jack. This unit will direct low bass signals distributed from themain, center and/or rear channels to this jack in accordance with your SPEAKER SET selections. The LFE (low-frequency effect) signals generated when Dolby Digital or DTS is decoded are also directed to this jack in accordancewith your SPEAKER SET selections.Notes• The cut-off frequency of the SUBWOOFER jack is 90 Hz.• If you do not use a subwoofer, allocate the signals to the main left and right speakers by changing the setting of “SOUND 1SPEAKER SET” item “1D BASS” on the set menu to MAIN.• Use the control on the subwoofer to adjust its volume level. You can also adjust the volume level by using this unit’s remote control(see “SETTING THE SPEAKER LEVELS” on page 46).Right LeftMain A speakerRight Left LeftMAIN SPEAKERS terminalsYou can connect up to two speaker systems to theseterminals. When using only one speaker system, connectit to either of the MAIN A or the MAIN B terminals.REAR SPEAKERS terminalsA rear speaker system can be connected to theseterminals.CENTER SPEAKER terminalsA center speaker can be connected to these terminals.CONNECTIONSThe diagram shows the speaker layout in the listeningroom.AUDIO LR21AUDIO VIDEO TUNER SPEAKERSCLASS 2 WIRINGLRLRLRLRCD DVDAMMAINAMAINREAR(SURROUND)CENTERBANTGNDFMANTIN(PLAY)MAINDVDCDDIGITALINPUTSUBWOOFER CENTERSUBWOOFERMONITOROUTSURROUNDOPTICALCOAXIALOUT(REC)MD/CD-RD-TV/CBLV-AUXINVCROUT6CH INPUT OUTPUT75Ω UNBAL.MAIN A OR B : 6Ω MIN./SPEAKERCENTER : 6Ω MIN./SPEAKERREAR : 6Ω MIN./SPEAKER365214124365