Measuring speaker resistance

Discussion in 'Amps and Cabs' started by Tom Fontaine, May 18, 2019.

  1. Tom Fontaine

    Tom Fontaine Member

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    Apr 8, 2019
    my speaker is bad, so I’m going to upgrade. There is no resistance rating printed or written on the Chinese speaker that’s in there. So I got out the old multimeter and tested it. Set to 200 it was reading 5.6 ohms. Now there is a loose terminal on the speaker that makes a poor connection, so this reading may be a bit off, and pushing on it gently with the probe to make better contact had the meter jumping between 5.6-6.8

    Just to be sure before I spend money on the wrong thing, this should indicate I need an 8 ohm speaker, correct?
     
  2. guitarman3001

    guitarman3001 Member

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    Sound like an 8 ohm speaker to me. Speaker impedance is rarely exact. An 8 ohm speaker might read lower or even slightly higher.
     
    QRSS likes this.
  3. Tom Fontaine

    Tom Fontaine Member

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    Apr 8, 2019
    Roger that. Round up is the rule of thumb I was told to follow.
     
  4. communarchy

    communarchy Supporting Member

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    Aug 25, 2008
    ~6 is the typical DC resistance of a speaker that is a nominal 8 ohm impedance. Remember you are measuring DC resistance not impedance.
     
    FracStrat likes this.

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