Wisdom Audio Wisdom & Sage Series SC-1 - Manual (Page 25)

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Caution! Do NOT connect the output of the microphone to the SC-1 until the
software explicitly instructs you to do so in the calibration process.
Connecting the microphone with the SC-1 and amplifiers on at the
wrong time can cause dangerous feedback that may damage your
loudspeakers.
Before Calibration Any subwoofer low-pass filter (crossover) should be defeated, or set to the THX
setting. Sometimes subwoofers have a special input that bypasses any internal
crossover, often called the “LFE input.” The elimination of the subwoofer’s own
low pass filter must be done before MultEQ
® Pro measurements are made so
MultEQ Pro can see what every part of the system is truly capable of doing.
If the subwoofer low-pass filter cannot be defeated, set it to its maximum fre-
quency. Any subwoofer gain controls should be set to their nominal settings,
such as at the THX position, or at 12 o’clock on a conventional level control.
Also, if the subwoofer has any sort of “Auto Standby” or sleep mode that turns
the power to the subwoofer off after it does not receive any signal for some
period of time, please disable this mode for the duration of the calibration.
Doing so will ensure that the subwoofer is always on and always outputting a
signal, which is important when taking accurate measurements.
During Calibration Audyssey MultEQ ® XT Room Correction performs more than equalization. It
also measures various parameters that should be set within the associated pre-
amplifier/processor so that the entire system is optimized. Among the items
measured are:
• the acoustic distance from each loudspeaker to the Main Listening
Position (or position 1) microphone location;
• the recommended crossover frequency for each channel to the
subwoofer;
• the level trim for each loudspeaker channel, and
• an indication of the polarity of each loudspeaker.
Consult the documentation of the connected processor to set the parameters
given by the results of MultEQ Pro. Use the findings of MultEQ Pro to set the
time delay, the crossover frequency, and the level trim for each loudspeaker, as
these setting will be optimized for the room.