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Thread: Blown speaker?

  1. #1

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    Default Blown speaker?

    I put an Olm meter on my speaker and it reads all zeros. Does that mean it is blown? I can't get any sound out of it because the amp is now blown too... I'm not sure if the speaker blew up the amp or vice versa.

  2. #2

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    Make sure your multimeter is set to a low range, probably the 200ohm or 20ohm range and see if you get a reading. Some meters are a bit confusing when to a high range if you try to measure a low resistance.
    Polk SDA-2B, Yamaha R-S700, Yamaha CDX-530, Apple TV, Samsung Plasma, Fiio D3 DA converter (Apple TV), Cambridge Soundworks Model 88 Radio (Bedroom).

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    Well the speaker is definitely shorted. One speaker reads 3 Olms, and the other reads 0. What would cause that to happen?

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    Well, the reason the meter reads "0" on one speaker is that the voicecoil of that speaker is damaged. Most likely there is a short in the voicecoil somewhere which would result in a shorter path through the VC which would cause your meter to read a much lower resistance. This damage could be caused by improperly powering the speakers (I don't want to get into a discussion of over/under powering) or some type of factory defect.
    Polk SDA-2B, Yamaha R-S700, Yamaha CDX-530, Apple TV, Samsung Plasma, Fiio D3 DA converter (Apple TV), Cambridge Soundworks Model 88 Radio (Bedroom).

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