another impedence ???

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by cjcayea, Dec 22, 2009.


  1. cjcayea

    cjcayea cool as a cucumber in a bowl of hot sauce Supporting Member

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    okay, so if my speakers measure at 5 ohms on a meter, are they condsidered 8 ohms? and to get a 16 ohm 4 x 12, would i need to wire them all series, or should i do 2 pairs in series, parallel with each other? hope that makes sense.

    if the speakers are comsidered 4 ohms, ill just put all four in series and be done with it.

    thanks.
     
  2. mark norwine

    mark norwine Member

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    You're not measuring impedance...you're measuring resistance. There's a difference.

    If you're reading 5 ohms, those are likely 8 ohm speakers.

    Four 8-ohm speakers can not be configured for 16 [total] ohms.
     
  3. cjcayea

    cjcayea cool as a cucumber in a bowl of hot sauce Supporting Member

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    yeah, im a bit of a hack when it comes to this. i have four low power 12s that id like to put into a 4x12, but ill be using an ac30, which would fry them individually, or even as a pair. would running them all in series be an option?
     
  4. mark norwine

    mark norwine Member

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    what Z load does yoru AC30 want to see?
     
  5. cjcayea

    cjcayea cool as a cucumber in a bowl of hot sauce Supporting Member

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    i think its 16. it may have a switch for 8, but im not sure.
     
  6. mark norwine

    mark norwine Member

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    Four 8-ohm speakers can be wired series-parallel for a total load of 8 ohms.

    Four 8-ohm speakers can not be wired for 16 ohms.

    Four 8-ohm speakers...all in series (as you suggested)...would be a 32 ohm load; I would not recommend that.
     
  7. cjcayea

    cjcayea cool as a cucumber in a bowl of hot sauce Supporting Member

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    so i would need to wire 2 pairs in series, and then put those 2 pairs parallel from the input? i think i can handle that. thanks alot!

    edit: the ac30 cc2 does have that switch i refered to.
     
  8. donnyjaguar

    donnyjaguar Member

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    Some el-cheapo meters don't measure very low resistance well.
     

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