User guide

27
Detection Results
This screen displays the speaker Distance and Trim results derived from the
Position 1 measurement, and the recommended crossover derived from all
measurements. MultEQ Pro lists individual, suggested speaker crossovers in
decreasing order of performance.
Speaker Type indicates whether the detected loudspeaker is a satellite or subwoofer.
Distance may be displayed in either English (feet) or Metric (meters) units by clicking the
“Dist” heading (in blue). By default, the values are shown in feet, and must be used to
manually set the distance (delay) in the pre/pro. When entered, the settings shown will time-
align all satellite speakers and subwoofers to the same point (Position 1).
Trim is displayed in dB. This number is not a dB SPL number; it is a relative Trim. The Trim
information must used to configure the level trims in the pre/pro. Using the exact numbers
shown will ensure that playback with the volume knob at “0” on the pre/pro will be at
reference level. If the values shown are out of the adjustment range provided by the pre/pro
you can subtract a fixed number from each one of them and enter the resulting values.
Reference level playback may not be possible in this case, but most consumers listen at 10
dB (or more) below reference so this will not be a problem.
The Sound Equalizer expects the connected source to be 1.5 V reference level. If connected
to a 2 V reference source, lower the trims entered into your processor by 2.5 dB.
Crossover is displayed in Hz. Use these numbers to enter the crossover frequency for each
of your speakers. The Sound Equalizer does not apply crossovers. It suggests what value to
use for each channel in the bass management system of the preamplifier/processor. The
crossover recommendations are derived from the room measurements and are optimized for
the in-room response of the speakers. They are listed from top to bottom of the drop-down
menu. The top-listed number is the highest recommended crossover setting. Other values
below it are also possibilities, but have lower recommendation scores. Depending on your
pre/pro, follow one of the following three steps:
1. If your preamplifier/processor allows for individual speaker crossover settings, input
the first crossover listed for each speaker.
2. If your preamplifier/processor pairs the crossover settings for your front and
surround speakers, find the best recommended crossover shared by your Left Front
and Right Front speakers using the drop-down menus in MultEQ Pro. Input that
crossover as your “Front” speaker crossover setting on the preamplifier/processor.
Use the same method for your surround speakers.
3. If the preamplifier/processor only allows one crossover setting for the entire system,
use the first crossover number MultEQ Pro lists for the center channel.
Note: The Audyssey filter calculation is optimized based on your selected crossover
frequency setting in the “Crossover” drop-down menus. Make sure you select the same
crossover frequency as what you enter into the preamplifier/processor. If you do not, then the
subwoofer to satellite “splice” or transition region will not be optimally flat. Namely, there may
be frequency response peaks and dips that will negatively affect the sound quality.
The “Large” setting should only be used if there is no subwoofer detected or if the low
frequency capability of a speaker extends below 40 Hz.
Detection Results
In some cases there may be
excessive low frequency
noise in the room not
necessarily audible to the
human ear, but picked up by
the microphone. This may be
due to rumble from the
street or HVAC equipment
that generates structure-
borne noise in the building.
This may cause the
subwoofer, and possibly
other loudspeakers, to be
detected at an incorrect
distance. If this happens,
and the low frequency noise
cannot be reduced, the only
option is to use a tape
measure to measure the
distances.
Occasionally the subwoofer
distance will be found to be
greater than the actual
measured distance. This is
due to the delay that the
subwoofer low-pass filtering
circuitry introduces.
Although the physical
distance may be shorter, the
MultEQ Pro-measured
distance is in fact correct.
If you have connected the
Sound Equalizer output to
another digital signal
processor that adds delay to
the signal, the distances
measured by MultEQ Pro
may be greater than the
actual distance. If the
distances are off by only a
few feet, you may still use
the distance measured by
MultEQ Pro. If they are
excessively off (5’ or more),
you may need to bypass the
device causing the delay, or
determine if there is a
setting that can reduce the
delay caused by the other
component.
Crossover
You may select your own
crossover values for each
speaker in the pre/pro.
However, Audyssey
recommends using the
displayed crossovers on this
screen. This is because the
most accurate method of
determining the correct
crossover frequency is by
room measurement. Room
acoustics affect how far the
speaker can actually play in
the room.
Note: You must manually
enter the information on
this screen into the
preamplifier/processor’s
settings.