During The Process Of Identifying The Polarity Of The Speaker Pins, The Following Two Points Should Be Noted:

(1) When directly observing the lead bracket on the back of the speaker, for speakers produced by the same manufacturer, the polarity regulations of their positive and negative pins are consistent; For speakers produced by different manufacturers, consistency cannot be guaranteed, and it is best to use other methods for identification.
(2) During the process of using a multimeter to identify the polarity of the pins of a high pitched speaker, due to the small number of turns in the speaker's voice coil and the small deviation angle of the watch needle, it is not easy to see. At this time, you can quickly press the paper bowl to make the deviation angle of the watch needle larger. Be careful not to damage the paper basin when pressing it.