• Four kinds of methods determine the polarity of the speaker
    In the production, maintenance, purchase speaker, the speaker should pay special attention to the positive and negative. In the assembly speaker, if the "+ -" terminal of the anti-, speakers will produce phase distortion.
      
    Speakers and speakers in the repair, we often see domestic and foreign manufacturers of speaker identification is inconsistent. The following describes four methods determine the polarity of the speaker. First, by using 1.5V battery touch speaker "+,-" side, push down low-frequency speaker cone bigger, high-frequency speaker cone or diaphragm to promote smaller. Battery "+" terminal of the speaker, "+" side of the cone or diaphragm upward push, the battery "+" very touched one end of the speaker of the "+". Second, with the multimeter touching the speaker "+,-" pole, push up the cone, then one end of the red pen for the speaker's "-" pole, black pen then one end of the speaker of the "+". Third, the presence of the repair assembly speaker, from the voice coil winding to determine the direction of its polarity, see Fig. Clockwise around the head of the "+", tail is "-" pole. Counter-clockwise around the head for the "-" pole, the end of the "+". Fourth is to use multimeter DC 50A file table placed speakers "+,-" pole, push the speaker cone, the meter pointer swings clockwise, the red pen then one end of the "-" pole, black pen then one end to the "+". Multimeter pointer to swing counterclockwise, one end of the red pen then as the "+", black pen then one end of the "-" pole.
    Time2010-10-29       Hits1254      From