Harman Kardon AVR 660/230 Service Manual

30OPERATIONNow that you have installed your components and completed a basicconfiguration, you are ready to begin enjoying your home theater system.turnInG on tHe aVr 760/aVr 660Flip down the Front-Panel Door and press the Main Power Switch in. ThePower Indicator on the front panel will turn amber, indicating that the AVRis in Standby mode and is ready to be turned on. The Main Power Switch isnormally left on.There are several ways to turn on the AVR 760/AVR 660:Press the Standby/On Switch on the front panel.a)Using the remote, press the AVR Power On Button or any of the Sourceb)Selectors.To turn the receiver off, press either the Standby/On Switch on the front panelor the AVR Power Off Button on the remote. Unless the receiver will not beused for an extended period of time, leave the Main Power Switch on. Whenthe Main Power Switch is turned off, any settings you have programmed willbe preserved for up to four weeks.IMPORTANT NOTE: If the PROTECT message ever appears in theMessage Display, turn off the AVR and unplug it. Check all speaker wires fora short. If none is found, bring the unit to an authorized Harman Kardonservice center for inspection and repair before using it again.VoLume controLAdjust the volume either by turning the knob on the front panel (clockwise toincrease volume or counterclockwise to decrease volume), or by pressing theVolume Control on the remote. The volume is displayed as a negative numberof decibels (dB) below the 0dB reference point.0dB is the maximum recommended volume for the AVR 760/AVR 660.Although it’s possible to turn the volume to a higher level, doing so maydamage your hearing and your speakers. For certain more dynamic audiomaterials, even 0dB may be too high, allowing for damage to equipment. Usecaution with regard to volume levels.To change the volume level display from the default decibel scale to a 0-to-90 scale, adjust the Volume Units setting in the System Settings menu, asdescribed in the Advanced Functions Manual, available on theharmankardon.com web site.Dolby VolumeThe AVR 760/AVR 660 is one of the first products to implement Dolby Volumeprocessing, which can improve the audio performance of the system byrevealing subtle details even at normal home-listening volumes.One concern of the typical home theater listener is that volumes can varywidely for different programs played by a source, e.g., television commercialadvertisements are often much louder than the main feature. Another is thatdetails heard in the recording studio at typically high reference volumes arelost at the lower volumes used by many listeners.The AVR 760/AVR 660 uses two Dolby Volume techniques to address theseissues. The Leveler module maintains a consistent listening volume withina source, e.g., while watching commercial television or while listening todifferent tracks on a USB drive. The Modeler module endeavors to re-createthe reference presentation that was heard in the recording studio withoutlosing portions of the program at the typically lower volume levels often usedin the home. When the Modeler module is active, you may notice details ofthe performance that were hidden when the program was played on otherequipment.To adjust the Dolby Volume setting, press the Audio Effects Button. Ascreen similar to the one shown in Figure 24 will appear. Move the cursorto highlight the Dolby Volume setting, and each press of the OK Button willswitch to one of the options in Table 3 below. The settings do not refer to thevolume level, which is adjusted normally using the Volume Control, but ratherto the amount of Dolby Volume processing desired. See Figure 24.Figure 24 – Adjust Dolby VolumeTable 3 – Dolby Volume SettingsSetting EffectOff No Dolby Volume processingLow Only Dolby Volume Modeler module is activeMedium Both Modeler and Leveler modules are active; Levelermodule has a value of 3Max Both Modeler and Leveler modules are active; Levelermodule has a value of 9NOTE: Dolby Volume is compatible with sources recorded at a samplingrate of 48kHz. High-resolution sources, such as DTS 96/24, will be decodedat 48kHz. DTS 96/24 programs will be played in DTS 5.1 mode. To hear DTS96/24 materials in high resolution, turn off Dolby Volume.Dolby Volume calibration offsetCalibration Offset is a feature of Dolby Volume that allows you to adjust thecalibration of the AVR 760/AVR 660 to optimally match your speakers andlistening environment. The AVR 760/AVR 660 is calibrated with the averagespeaker sensitivity in mind; however, different speakers may have differentsensitivities. Use Calibration Offset to adjust the calibration of the AVR 760/AVR 660 according to the types of speakers you have.AVR 660 -760, 230V Service ManualPage 29 of 264