【Compatibility】This phase meter is ideal for troubleshooting and testing audio systems safely, it can test all speakers in all cars, such as small tweeters, door speakers, subwoofers, etc. The CD in the package includes 4 pieces of test music.
【Low Battery Reminder】The low battery indicator lights up to indicate low battery power, effectively used to test the polarity of your speakers, helping you prevent any interruptions or inaccuracies during the test, making it ideal for audio system troubleshooting and testing tool.
【How to use】Put it into the car CD player, play the 1st or 2nd segment, and check whether the left and right channels are connected correctly. Play verse 3 or 4, the sound speaker will produce a fixed frequency signal, then press the test button.
【Unique Design】Unique and stylish design, perfect replacement for old or damaged ones, extending service life, ensuring you can use it to thoroughly test and optimize any car audio system, perfect for audio system professionals or enthusiasts.
【high quality】The quality assurance of the phase tester reduces the risk of damage to the speaker components or the test instrument itself. 3 green lights flashing and 1 red light indicate the speaker output is in positive phase and correctly connected); 3 red lights flashing and 1 green light indicate reverse phase (reverse connection).
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