human perception, room acoustics and information from both incoming
source levels and actual output sound levels in the room.
Audyssey Dynamic EQ works in tandem with Audyssey 2EQ to vary the EQ
applied to the speakers in sympathy with the acoustic level to achieve a tonal
balance and surround impression that remain constant despite changes in
When Audyssey Dynamic EQ is turned on an option for Dynamic EQ offset
Movies are mixed in rooms calibrated for a standard film reference.
Audyssey Dynamic EQ is referenced to this standard film level and makes
adjustments to maintain the reference response and surround envelopment
relative to it.
However, the film reference level is not always used in music or other non-
To allow for this the Dynamic EQ Offset provides four settings that can be
selected , three for when the mix level of the content is not film standard.
0 dB (Film Ref): This is the default setting and should be used when listening
15 dB: For pop/rock music or other program material that is mixed at very
high listening levels or with a compressed dynamic range.
10 dB: For jazz or other music that has a wide dynamic range. This setting
should also be selected for TV content as that is usually mixed at 10 dB
below film reference.
5 dB: For content that has a very wide dynamic range, such as classical
Audyssey Dynamic Volume
Audyssey Dynamic Volume
attempts to solve the problem of large
variations in volume level between television programs, commercials, and
between the soft and loud passages of movies.
Dynamic Volume looks at the current volume setting and then monitors the
program material in real time, whenever necessary, Dynamic Volume makes
the necessary rapid or gradual adjustments to level maintain the desired
playback volume level.
The idea is that perceived bass response, tonal balance, surround
impression, and dialog clarity remain the same whether watching movies,
flipping between television channels, or changing from stereo to surround
Audyssey Dynamic EQ is integrated into Dynamic Volume so turning on
Dynamic Volume also turns on Dynamic EQ.
Dynamic Volume has three settings (and Off)
Heavy: This has the narrowest dynamic range. If you want to watch an action
movie late at night and not wake up your family use Heavy.
Medium: This is the most common setting for daily television use in a living
room setting and works well to tame the volume increases of
Light: This setting offers a wider dynamic range and can be used when
watching an action film where you want a full dynamic experience but want
to make the dialog consistently audible.
Off: The full dynamic range is left untouched.
Dynamic Vol. :
When the auto setup of the 651R/751R is completed successfully, the
651R/751R displays a ‘Measurement Complete’ screen and then shows the
Advanced Audyssey Setup screen as per following section.
If you have just perfomed Audyssey Autosetup & 2EQ you will see 2EQ is
enabled plus you can now enable Audyssey Dynamic EQ and/or Dynamic
Volume as well (if desired).
If you have just perfomed a simple Audyssey Autosetup you will see 2EQ is
disabled (and cannot be enabled) but you can still enable Audyssey Dynamic
EQ and/or Dynamic Volume (if desired). See next section for full details.
To simply accept the settings by pressing the (I/O) button to exit the menu.
To accept the settings, simply press the (I/O) button and press again to exit
The Speaker Distance crossover and Level Calibration settings for each
speaker will have been updated.
It is of course now possible to go into the Speaker Delay and Level
Calibration menus if you want to manually check/adjust the settings made
by the system, and it is always advisable to check them as no system can be
To exit the auto setup menu of the 651R/751R continue to press the OSD
button on the remote control to exit all menus or until ‘OSD ‘is no longer
displayed on the front panel. You can now unplug the microphone and put it
away for future use.
– Some speakers such as bi-polars that radiate in more than one direction
can make it difficult for Autosetup to accurately measure their level and
distance from the listening position.
– Active subwoofers with DSP have a small delay time built into their
electronics. Because the 651R/751R measures the total delay time
including any in-built delay it will still apply the correct amount of delay that
when added to the inbuilt delay gives the correct response. However the
distance reported in this case will be a little more than the physical
– If a subwoofer is present the Autosetup treats most speakers as ‘Small’
and sets a low crossover point (unless they genuinely have a bass
response lower than 40Hz).
This does not mean they are physically small it just means that the system
will automatically send the very low bass (only) from these channels to the
subwoofer for the best system response.
In all cases it is always advisable to manually check the settings autosetup
has made for a ‘reality check’ to ensure there are no obvious errors.
Further to Room EQ which can only be enabled if an Audyssey & 2EQ
procedure has been completed, it is possible to enable two extra Audyssey
features (which are by default disabled).
Select Advanced Setup from the main OSD menu. Then select Advanced
Audyssey Dynamic EQ
Music, movies and games are typically mixed at fairly high volumes but
played back at more modest levels in a domestic setting.
Because the response of the human ear varies with level, the perceived
frequency response and surround field in a domestic environment can at
various levels be altered from that actually intended.
Audyssey Dynamic EQ
attempts to solve this problem by taking into account