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what is my impedance?

Discussion in 'Amps and Cabs [BG]' started by peteroberts, May 30, 2002.


  1. I have an SWR Workingman's and 2 Eden cabs, a 210XLT and a D115T...they are both rated at 8 ohms. There are 2 speaker outputs on the amp...when I use 1 for the 115 and 1 for the 210, is my total impedance 4 or 16 ohms? What if I only use one output, go to my 210, and from the 210 out to the 115 (like a daisy chain), what is my impedance in this setup? I am just kinda confused which setup is series/parallel.
     
  2. Hategear

    Hategear Workin' hard at hardly workin'.

    Apr 6, 2001
    Appleton, Swissconsin
  3. Johnny BoomBoom

    Johnny BoomBoom Supporting Member

    Jun 8, 2001
    Glasgow, Scotland

    I'm guessing that most amps are wired the same as a most speaker cabs, as I have no experience of SWR or Eden.

    Anyway, I expect that the speaker outs a wired parallel, as are the speaker cabinets.

    So, your total impedance either way is:-


    1/Rt = 1/R1 +1/R2

    1/Rt = 1/8 +1/8 = 2/8 = 1/4


    Therefore Rt = 4 ohms.

    Rt is the total load or impedance your amp sees! I believe from this your impedance will be 4 ohms.