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Impedance calculations?

Discussion in 'Archived Threads 2001-2004' started by John H, Oct 21, 2002.

  1. John H

    John H Second Unit

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    Three 8 ohm rated drivers wired in parallel = 2.6 ohms

    My power amp is rated at 750w @ 4 ohms 1500w @ 2 ohms

    "Theoretically" should it be rated at 1275w @ 2.6 ohms?

    Are my calculations correct?

    John
     
  2. Greg Monfort

    Greg Monfort Supporting Actor

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    >Three 8 ohm rated drivers wired in parallel = 2.6 ohms
    ====
    I would have rounded it off to 2.667ohms for wattage calcs. [​IMG]
    ====
    >My power amp is rated at 750w @ 4 ohms 1500w @ 2 ohms
    "Theoretically" should it be rated at 1275w @ 2.6 ohms?
    ====
    E = (W*R)^0.5, or ~54.77V
    R = E^2/W, or ~2.35ohms, so 1275W is a wee bit optimistic. [​IMG]
    ~54.77V^2/~2.667ohms = ~1125W
    HTH,
    GM
     

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