Monoprice 9497 Disney World of Wonder - Manual (Page 9)

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The Polarity test will begin using the left front and right front
speakers only. It will advance around the system in a clockwise
pattern. Each test will involve two speakers only. The test will end
with the left front and center speakers.
A test signal will emanate from each pair of speakers. The signal
uses a broadband energy that covers the entire audible frequency
spectrum. This type of signal is called pink noise and will be used
on most of the tests on this disc.
The signal will be in-phase for the first ten seconds for each pair of
speakers being tested and then switch to being out-of-phase for
6 seconds. When the signal switches to out-of-phase there should
be an audible drop in level and the sonic image or noise will shift to
an undetermined location in the room instead of centered between
the speakers. If the audio level decreases when the signal is out-
of-phase, your speakers are in-phase and you may advance to the
next set of speakers.
Remember that all speakers in the system must work together so
you have to check the connections on every speaker to determine
if any are out-of-phase.
For best results, before you begin the Polarity test adjust the
volume of each speaker so they are approximately equal in level.
Dynamic range is the difference between the loudest undistorted
signal and lowest audible signal of your home theater system. This
test will help determine the noise floor of your listening environment.
The test signal consists of several different bands of pink noise
recorded at successively lower volumes. The test signal starts at
minus 20 dB full scale and decreases in 5 dB steps with the last
signal recorded at minus 60 dB full scale. The noise floor for a
particular frequency band is the point at which you can no longer
hear the test signal.
This test can help you identify how the noise generated by
household systems and appliances, such as air conditioners and
refrigerators, affects your listening experience. For instance, try
turning off the heater or air conditioner to see if you can hear a
lower volume test signal in one of the low frequency bands.
The Rattle test is intended to trigger sympathetic vibrations in
objects such as lamps, tables and windows that will vibrate in
response to the audio emanating from your speakers and subwoofer.
The sweep tones in the rattle test are also used to check for speaker
resonances.
The first tone of the test covers the entire audible frequency
spectrum. Each subsequent tone is set to a particular frequency
range, which will help you identify which objects are affected at
certain frequencies.
If objects do vibrate, you should either move these objects or alter
them so they do not interfere with your listening experience.
NOIsE FLOOR tEst
beGinner | QUIck & EASY cAlIBRATIOn
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BUZZ & RattLE tEst