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AV1Setup3-37CALIBRATING OUTPUT LEVELSSelecting the SPEAKER SETUP menu LEVELS CALIBRATION optionopens the LEVELS CALIBRATION menu, which is used to calibrateoutput levels for the audio output connectors. Calibration ensuresthat output levels correspond to THX reference levels (75dB) forinput sources such as DVDs.Note the following to ensure accurate output level calibration:• Use a Sound Pressure Level (SPL) meter to calibrate output lev-els. An SPL meter is a device that measures the relative loudnessof the speakers to ensure accurate output level calibration.• Before output level calibration begins, eliminate extraneousnoises in the listening space, such as conversations, air condi-tioners, and sounds that filter in through open doors and win-dows.• Before output level calibration begins, remove objects and peo-ple that obstruct the line-of-sight path between the SPL meterand the speaker being measured.• Output levels should be calibrated from the primary listeningposition. Place the SPL meter at the approximate spot wherethe listener’s head will be during listening.INTERNAL NOISE TESTOpens the INTERNAL NOISE message shown above, which indicatesthat the internal noise test produces loud calibration test signals.When this message appears, press the arrow to open theSPEAKER LEVEL ADJUST menu shown above and conduct the internalnoise test or press the arrow to close the message without con-ducting the internal noise test. When the SPEAKER LEVEL ADJUSTmenu opens, the internal noise test automatically begins.SPEAKERSSETUP LEVELS CALIBRATIONMAIN MENUMODE ADJUSTAUDIO CONTROLSSETUPSETUPINPUTSSPEAKERSREAR PANEL CONFIGDISPLAYSVOLUME CONTROLSTRIGGERLOCK OPTIONSSPEAKER SETUPCUSTOM SETUPTHX SETUPSPEAKER DISTANCESLEVELS CALIBRATIONCR SR RRL SL RLMSUB0.0 dB 0.0 dB 0.0 dB0.0 dB0.0 dB 0.0 dB 0.0 dB 0.0 dBLEVELS CALIBRATIONINTERNAL NOISE TESTEXTERNAL NOISE TESTBASS PEAK LIMITERINTERNAL NOISE!CAUTION!HIGH AUDIO LEVELSSPEAKER LEVEL ADJUSTFRONT LEFTCENTERFRONT RIGHTSIDE RIGHTREAR RIGHTREAR LEFTSIDE LEFTSUBWOOFER+0.0dB+0.0dB+0.0dB+0.0dB+0.0dB+0.0dB+0.0dB+0.0dBSPEAKERSSETUP LEVELS CALIBRATION INTERNAL NOISE TEST |
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