SpecificationsA5 Tone ControlTurn tone adjustments on and off.[Selectable items]ON : Allow tone adjustment (treble, bass).OFF : Playback without tone adjustment.The tone cannot be adjusted when in the DIRECT mode.A6 BassAdjust low frequency range (bass).[Variable range] –6dB ~ 0dB ~ +6dBA7 TrebleAdjust high frequency range (treble).[Variable range] –6dB ~ 0dB ~ +6 dB“Bass” and “Treble” can be set when “Tone Control” is set to “ON”.A3 SW ATT (Subwoofer Attenuation)Attenuate subwoofer level when using EXT. IN mode.[Selectable items]ON : The input from the subwoofer channel is attenuated.OFF : The input from the subwoofer channel is not attenuated.Usually use in this mode.Set this to “ON” if the subwoofer channel level seems too high whenplaying audio signal.A4 SubwooferTurn subwoofer output on and off.[Selectable items]ON : The subwoofer is used.OFF : The subwoofer is not used.For details on adjusting individual parameters, see “Adjusting the parameters” (vpage 33).A2 SB CH OUT (for Multi-channel sources)Select playback mode for surround back channels.[Selectable items]OFF : No signal is played from the surround backchannels.MTRX ON : The surround channel signals undergo digital matrixprocessing and are output from the surround backchannels.PLIIx C z1 : Decoded in Dolby Pro Logic IIx Cinema mode,surround back signal played.PLIIx M z2 : Decoded in Dolby Pro Logic IIx Music mode,surround back signal played.ES MTRX z3 : DTS signal played with digital matrix processing.ES DSCRT z4 : Signal included in DTS-ES Discrete 6.1-channelsources played.z1: This can be selected when “Surround Back Speaker” is set to“2spkrs” at the “System Setup” – “Speaker Setup” setting(vpage 23).z2: This can be selected when “Surround Back Speaker” is set to“2spkrs” or “1spkr” at the “System Setup” – “Speaker Setup”setting.z3: This can be selected when playing DTS sources.z4: This can be selected when playing DTS sources including adiscrete 6.1-channel signal identification signal.A2 SB CH OUT (for 2-channel sources)Determine whether to use surround back speakers.[Selectable items]ON : The surround back channel signal is played.OFF : The surround back channel signal is not played.• If the settings of speakers for which “None” has been determinedat “Auto Setup” are changed, “Audyssey”, “Audyssey Byp. L/R” and“Audyssey Flat” cannot be selected. Either perform Auto Setupagain, or return to the setting after running Auto Setup with “SystemSetup” – “Speaker Setup” – “Restore”.• When using headphones, “MultEQ” is set to “OFF”.A8 MultEQSelect the type of room correction desired from the following list:[Selectable items]Audyssey : Optimize frequency response of all speakers.Byp. L/R : Optimize frequency response of speakers except frontL and R speakers.Flat : Optimize frequency response of all speakers to flatresponse.OFF : Turn equalizer off.NOTE• “MultEQ” can only be set when Auto Setup has been performed.• “MultEQ” cannot be set in the following situations.• If “Auto Setup” fails to be completed.• After running Auto Setup, when the number of used speakers hasincreased from the number of measured speakers.Operating from the main unit or remote controlunitPress MULTEQ.• When “Audyssey”, “Audyssey Byp. L/R” or “Audyssey Flat” isselected, the Audyssey MultEQ indicator lights green.• After running Auto Setup, if the Speaker Configuration, Distance,Channel Level and Crossover Frequency have changed withoutincreasing the number of speakers measured, the Audyssey MultEQindicator lights red.OFFAudyssey Audyssey Byp. L/RAudyssey FlatSettings can also be made when [STD] is pressed.When using surround back speakers, adopt the followingsettings.q Adopt “7.1ch” for the Amp Assign setting.• The default setting for the Amp Assign mode of AVR-689 is“ZONE2”.w Adopt a setting other than “OFF” for the “SB CH OUT” settingof “Surround Parameter”.NOTEWhen the “Dynamic EQ” setting is “ON”, setting is not possible.Getting Started Connections Setup Playback Remote Control Multi-Zone Information TroubleshootingENGLISH