AV1Setup3-31THX ULTRA2 SUB ON, OFFIndicates whether or not the subwoofer connected to the audiooutput connector labeled Subwoofer is Ultra2 certified. Select ONif the connected subwoofer is Ultra2 certified and OFF if the con-nected subwoofer is not Ultra2 certified. When ON, the CUSTOMand THX SETUP menu BGC parameter (next column) are used toadjust boundary gain compensation. When OFF, the BGC parame-ter is not available (N/A).BGC (BOUNDARY GAIN COMPENSATION) ON, OFFAdjusts boundary gain compensation when the CUSTOM and THXSETUP menu THX ULTRA2 SUB parameter is ON. When the BGCparameter is ON, a highpass 55Hz filter is applied to all listeningmodes and audio output connectors. When OFF, no filter is appliedto listening modes and audio output connectors. When the param-eter setting is N/A, the THX ULTRA2 SUB parameter is OFF andboundary gain compensation cannot be adjusted.Note:BGC compensates for increased bass energy that is caused by the proxim-ity of the speakers to the listening room walls.MAIN MENUMODE ADJUSTAUDIO CONTROLSSETUPSETUPINPUTSSPEAKERSREAR PANEL CONFIGDISPLAYSVOLUME CONTROLSTRIGGERLOCK OPTIONSSPEAKER SETUPCUSTOM SETUPTHX SETUPSPEAKER DISTANCESLEVELS CALIBRATIONCR SR RRL SL RLMSUB40Hz 60Hz 60Hz60Hz40Hz 40Hz 60Hz 60HzCUSTOM SETUPFRONT L/RCENTERSIDE L/RREAR L/RSUBWOOFERULTRA2 SUBBGCASA40 Hz60 Hz60 Hz60 Hz40 HzOFFN/AAPARTONOFFThe THX ULTRA2 SUB and BGC parameters are availableon the CUSTOM and THX SETUP menus. When a parametersetting is adjusted on the menu, it is automatically adjustedon the other menu as well.The BGC parameter is notavailable unless the THXULTRA2 SUB parameter isset to OFF.SPEAKERSSETUP CUSTOM SETUP THX SETUPor SPEAKERSSETUP CUSTOM SETUP THX SETUP BGCor