Harman Kardon AVR 660/230, Service Manual

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30
OPERATION
Now that you have installed your components and completed a basic
configuration, you are ready to begin enjoying your home theater system.
turnInG on tHe aVr 760/aVr 660
Flip down the Front-Panel Door and press the Main Power Switch in. The
Power Indicator on the front panel will turn amber, indicating that the AVR
is in Standby mode and is ready to be turned on. The Main Power Switch is
normally 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 Source b)
Selectors.
To turn the receiver off, press either the Standby/On Switch on the front panel
or the AVR Power Off Button on the remote. Unless the receiver will not be
used for an extended period of time, leave the Main Power Switch on. When
the Main Power Switch is turned off, any settings you have programmed will
be preserved for up to four weeks.
IMPORTANT NOTE
: If the PROTECT message ever appears in the
Message Display, turn off the AVR and unplug it. Check all speaker wires for
a short. If none is found, bring the unit to an authorized Harman Kardon
service center for inspection and repair before using it again.
VoLume controL
Adjust the volume either by turning the knob on the front panel (clockwise to
increase volume or counterclockwise to decrease volume), or by pressing the
Volume Control on the remote. The volume is displayed as a negative number
of 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 may
damage your hearing and your speakers. For certain more dynamic audio
materials, even 0dB may be too high, allowing for damage to equipment. Use
caution 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, as
described in the Advanced Functions Manual, available on the
harmankardon.com web site.
Dolby Volume
The AVR 760/AVR 660 is one of the first products to implement Dolby Volume
processing, which can improve the audio performance of the system by
revealing subtle details even at normal home-listening volumes.
One concern of the typical home theater listener is that volumes can vary
widely for different programs played by a source, e.g., television commercial
advertisements are often much louder than the main feature. Another is that
details heard in the recording studio at typically high reference volumes are
lost at the lower volumes used by many listeners.
The AVR 760/AVR 660 uses two Dolby Volume techniques to address these
issues. The Leveler module maintains a consistent listening volume within
a source, e.g., while watching commercial television or while listening to
different tracks on a USB drive. The Modeler module endeavors to re-create
the reference presentation that was heard in the recording studio without
losing portions of the program at the typically lower volume levels often used
in the home. When the Modeler module is active, you may notice details of
the performance that were hidden when the program was played on other
equipment.
To adjust the Dolby Volume setting, press the Audio Effects Button. A
screen similar to the one shown in Figure 24 will appear. Move the cursor
to highlight the Dolby Volume setting, and each press of the OK Button will
switch to one of the options in Table 3 below. The settings do not refer to the
volume level, which is adjusted normally using the Volume Control, but rather
to the amount of Dolby Volume processing desired. See Figure 24.
Figure 24 – Adjust Dolby Volume
Table 3 – Dolby Volume Settings
Setting Effect
Off No Dolby Volume processing
Low Only Dolby Volume Modeler module is active
Medium Both Modeler and Leveler modules are active; Leveler
module has a value of 3
Max Both Modeler and Leveler modules are active; Leveler
module has a value of 9
NOTE
: Dolby Volume is compatible with sources recorded at a sampling
rate of 48kHz. High-resolution sources, such as DTS 96/24, will be decoded
at 48kHz. DTS 96/24 programs will be played in DTS 5.1 mode. To hear DTS
96/24 materials in high resolution, turn off Dolby Volume.
Dolby Volume calibration offset
Calibration Offset is a feature of Dolby Volume that allows you to adjust the
calibration of the AVR 760/AVR 660 to optimally match your speakers and
listening environment. The AVR 760/AVR 660 is calibrated with the average
speaker sensitivity in mind; however, different speakers may have different
sensitivities. 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 Manual
Page 29 of 264