Owner's Manual
32
Operation Manual
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Chapter 8: The Display: Polarity Checker
1. Start/Stop Measurement – Press this button to start the mea-
surement. An audio test signal will play in your system, after a
short warning.
2. Polarity Display – A Plus here (+) indicates that the loudspeaker
you are measuring is correctly wired in-phase (but check that the
Signal Quality (3) is good before celebrating).
A Minus here (-) indicates that whoever did the speaker wiring, it
wasn’t you. Check the wiring, and swap the wires at the amplier
end, or speaker end (but not both) whichever is most convenient.
3. Signal Quality – If the signal picked up by the microphone is too
low in level for an accurate reading, then try adjusting the micro-
phone gain control at the top of the display, until the level is more
suitable, or increase your amplier to bring up the output levels in
your loudspeakers.