Powerbrake Pb100 C1

Discussion in 'The Workbench' started by Gunner64, Jan 8, 2017.

  1. Gunner64

    Gunner64 Well-Known Member

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    My powerbrake was acting funny, as in the fan would never kick on lately. I opened it up a saw that the plug in for the fan wasn't hooked up at the connector, and c1 was bulging and the plastic coating was peeling exposing the aluminum. Not leaking yet .but I'd like to replace it before it spews. It looks like a non polarized 160uf 160v electrolytic. I've never ran across non polarized electrolytics before.. does this caps replacement have to be non polarized? marshall_powerbrake.pdf_1.png
     
  2. ampmadscientist

    ampmadscientist Well-Known Member

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    These type caps are used in speaker crossovers (for passive crossovers). The crossover cap is non polarized. (the audio signal is AC, and there is no polarity)



    It is OK to use 2 caps in parallel, like example: 80 + 80 = 160uF.
    O series, example: 320 + 320 in series = 160.

    It is better to use a higher voltage, higher temperature, higher life rated capacitor.

    Places that sell do-it-yourself speaker crossover parts will have these type capacitors.
     
  3. Gunner64

    Gunner64 Well-Known Member

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    Thanks I wll look. I did find 220uf 200v so I may go with that.
     

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