NTi Audio Acoustilyzer AL1 - Manual (Page 47)

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Polarity Test
The polarity test function detects the correct cable and speaker polarity in
combination with the Minirator MR1 polarity test signal. The Acoustilyzer
provides the following test configurations:
a. Speaker Polarity Test
• Feed the speaker system with the
polarity test signal of the Minirator.
• Adjust the level (at MR1 or amplifier) so
the test signal is clearly audible.
Acoustilyzer settings:
• IN:MIC (INT), using the internal mic of
the Acoustilyzer AL1
• IN:XLR/RCA, using an external mic,
such as the MiniSPL
Choose the polarity test frequency range:
• FULL/MID, for wide band speaker tests
• WOOFER, for woofer tests
Notes:
• Please note the polarity testing is a simplified measurement of a
very complex signal phasing. Drivers, speakers and cross-overs
cause severe phase shifts of the audio signal.
• The polarity of various speakers within the same cabinet can
be different. This is often by design and is therefore not a prob-
lem.
• Polarity testing is most useful for checking the correct wiring of
similar speaker systems.