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for fh-168 Speaker Polarity Tester Senyar Speaker Tester,Auto Car Audio Speaker Horn Tester Phase Meter PH Phasemeter
Specification Condition Brand New Material Plastic Color Black + Silver Size As Picture Shown Package Weight Approx. #How to use the tester? the CD with the package include 4 section test music. section 1 left channel noise signal section 2 right channel noise signal section 3 phase test signal section 4 same as section 3 Put it in car cd player, and play section 1 or 2, check if left/right channel connection is right. Play section 3 or 4, the sound speaker will produce a fixed frequency signal, then press test button. 3 green light flash and 1 red light indicates that the speaker output is in positive phase

Price is $13.00
Price: $13.39