User guide

26
Additional Position Measurements
Move the microphone to another listening position and press the Measure button.
Repeat the process for several positions in the main listening area of the room. It is
required to measure a minimum of three positions before continuing. Audyssey
strongly recommends measuring at least 8 positions for average-sized rooms.
Stagger the height of the microphone by a few inches from one measurement
position to the next to account for the varying heights of listeners.
The larger the room, the more positions should be measured up to a maximum of
32 positions. Be sure to measure only in locations within the main listening area, but
try to avoid extreme off-axis positions. Measuring in a distant corner of the room will
not be beneficial and will detract from the overall benefit within the main listening
area.
Audyssey MultEQ Pro measures the absolute polarity of each individual
loudspeaker. If any of the speakers are wired out of polarity, the application will
display an error window that explains which loudspeaker(s) to check. You may then
verify the polarity problem before continuing with the application. This is especially
useful when you are installing in-wall speakers. It is recommended that you check
for polarity problems by examining the wire connections at the amplifier, speakers
and in-wall splices.
Click the ► button to complete the measurement process. The window below
appears after clicking the ► button.
Note: You can always return to the Measurement screen and measure additional
positions by clicking the ◄ arrow (the application will remember the last measured
position).
Save and Load Measurements
After the first successful measurement is obtained, the Save Measurements button
becomes available. You may save your current progress by pressing the Save
Measurements button. The “Save As” Window is launched
The default directory, “My Documents\Audyssey\Measurements” is used to save
and load measurement files with the file extension, “.amd”.
When saving measurements, it can be helpful to enter a name for the file that will
help you find the file for future use.
Load Measurements at any time while at the Measurement screen. Simply press
Load Measurements and open the file that you wish to load.
Important Note!
Use measurement files from the same device as you are loading to. Also it is
important make a note of the Zone Configuration settings used when the saved
measurement file was created.
Be sure to enter the same Zone Configuration settings as used in creating the
measurement file you are about to load. Otherwise, the final results will be
inaccurate.
MultEQ Pro will provide a warning message if these settings do not match.
Audyssey has a crossover-
finding method that is based
on the measurement of each
satellite and subwoofer in the
system at multiple seats in
the room. The frequency that
best optimizes the blend
between the satellite and
subwoofer is selected based
on complex addition
(amplitude and phase). The
crossover calculation takes
into account the capabilities
of the speaker to make sure it
isn’t overdriven. This
frequency can be different for
each channel if each speaker
is driving the room from a
different location.
If the loudspeakers are set up
as dipoles for playback, then
they MUST be calibrated in
dipole mode. Calibrating a
loudspeaker as a direct
radiator and then setting it to
dipole mode will give
incorrect results.
Most home systems use a
single loudspeaker per
surround channel. If more
speakers are desired to
increase the coverage in a
large room, it is best to use a
fairly large number. Simply
having two speakers per
channel leads to audible
comb filtering.
AAA or AA batteries can be
used to test the polarity of a
speaker. Simply connect the
negative end of the battery to
the negative speaker lead
(with the amplifier
disconnected), and tap the
positive speaker lead to the
positive end of the battery. If
the woofer moves out of the
speaker cabinet, then the
polarity of the speaker cable
is correct. If the woofer pulls
into the speaker cabinet, the
speaker cable polarity is
reversed. You should only be
touching the woofer, never
the tweeters.
If you ignore the speaker
polarity error message and
continue with the application,
then you must rerun the
application and recalibrate the
system if you change the
speaker polarity after MultEQ
is finished.