22ENGLISH5132Playing the input source311 2 51 Select the input source to be played.AUTO PCM DTS• Selecting the external input (EXT. IN) modePress the EXT. IN to switch the external input.• Selecting the AUTO, PCM and DTS modesThe mode switches as shown below eachtime the INPUT MODE button is pressed.Input mode selection functionDifferent input modes can be selected for the differentinput sources. The selected input modes for theseparate input sources are stored in the memory.q AUTO (auto mode)In this mode, the types of signals being input to thedigital and analog input jacks for the selected inputsource are detected and the program in the AVR-2105’s surround decoder is selected automaticallyupon playback. This mode can be selected for allinput sources other than PHONO and TUNER.The presence or absence of digital signals isdetected, the signals input to the digital input jacksare identified and decoding and playback areperformed automatically in DTS, Dolby Digital orPCM (2 channel stereo) format. If no digital signal isbeing input, the analog input jacks are selected.Use this mode to play Dolby Digital signals.w PCM (exclusive PCM signal playback mode)Decoding and playback are only performed whenPCM signals are being input.Note that noise may be generated when using thismode to play signals other than PCM signals.e DTS (exclusive DTS signal playback mode)Decoding and playback are only performed whenDTS signals are being input.r ANALOG (exclusive analog audio signal playbackmode)The signals input to the analog input jacks aredecoded and played.t EXT. IN (external decoder input jack selection mode)The signals being input to the external decoderinput jacks are played without passing through thesurround circuitry.2 Select the input mode.FUNCTION(Main unit) (Remote control unit)ANALOG(Main unit) (Remote control unit)EXT. IN(Main unit) (Remote control unit)INPUT MODE(Main unit) (Remote control unit)Example: CDTo select the input source whenREC OUT is selected, press theSOURCE button then operatethe input function selector.SOURCE(Main unit)SIGNALDIGITALDIGITALDIGITALSIGNALSIGNAL3 Select the play mode.Press the SURROUND MODE button, then turnthe SELECT knob.The volume can be adjusted within the rangeof –70 to 0 to 18 dB, in steps of 0.5 dB.However, when the channel level is set asdescribed on page 25, if the volume for anychannel is set at +0.5 dB or greater, thevolume cannot be adjusted up to 18 dB. (Inthis case the maximum volume is adjusted to“18 dB — (Maximum value of channellevel)”.)Input mode when playing DTS sources• Noise will be output if DTS-compatible CDs or LDsare played in the “ANALOG” or “PCM” mode.When playing DTS-compatible sources, be sure toconnect the source component to the digital inputjacks (OPTICAL/COAXIAL) and set the input mode to“DTS”.4 Start playback on the selected component.• For operating instructions, refer to thecomponent’s manual.5 Adjust the volume.MASTER VOLUME(Main unit) (Remote controlunit)The volume levelis displayed onthe mastervolume leveldisplay.To select the surround modewhile adjusting the surroundparameters, tone defeat or tonecontrol, press the surround modebutton then operate the selector.SURROUND MODESURROUND MODE(Main unit) (Remote control unit)SELECTInput mode displayANALOGDIGITALDIGITALDIGITALANALOGAUTO PCM DTSINPUTAUTO PCM DTSINPUTAUTO PCM DTSINPUTAUTO PCM DTSINPUT• In the AUTO mode• In the DIGITAL PCM mode• In the DIGITAL DTS mode• In the ANALOG modeOne of these lights,depending on the inputsignal.Input signal display• DOLBY DIGITAL• DTS• PCMThe indicator lights when digital signalsare being input properly. If the indicatordoes not light, check whether the digital inputcomponent setup (page 17) and connections arecorrect and whether the component’s power isturned on.DIGITALDIGITALNOTE:• The indicator will light when playingCD-ROMs containing data other than audiosignals, but no sound will be heard.DIGITALNOTE:• Note that noise will be output when CDs or LDsrecorded in DTS format are played in the “PCM”(exclusive PCM signal playback) or “ANALOG”(exclusive PCM signal playback) mode. Select theAUTO or DTS mode when playing signals recordedin DTS.Notes on playing a source encoded with DTS• Noise may be generated at the beginning ofplayback and while searching during DTSplayback in the AUTO mode. If so, play in theDTS mode.• In some rare cases the noise may be generatedwhen you preform the operation to stopplayback of a DTS-CD or DTS-LD.Example: Stereo(Main unit)• Selecting the analog modePress the ANALOG button to switch to theanalog input.