The phase polarity tester sends a audio signal (from CD) into the connected speaker or speaker system. A built-in microphone at the top of the tester receives the pulse reproduced by the speaker and the phase will be indicated by the LEDs of the tester. Green indicates that the measured driver is in phase (correct polarity) and red indicates a 180 degree shifted phase (incorrect polarity).
While measuring a "pop - pop" sound is audible, position the tester close to each speaker and move it from driver to driver.
Features:
• Battery Operated
• Portable
• Includes CD with test files
• MP3 test files also available HERE
