Which end is postive on capacitor???

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  • CADman_ks
    Senior Member
    • Jan 2012
    • 497

    Which end is postive on capacitor???

    I have these capacitors in my crossover:



    I now have them built, and I'm wondering if I have them going the correct direction.

    Is there a "+" and "-" to this style of cap?

    CADman_ks
    CADman_ks
    - Stentorian build...
    - Ochocinco build...
    - BT speaker / sub build...
  • cjd
    Ultra Senior Member
    • Dec 2004
    • 5568

    #2
    You should be using NP caps, which do not have a + or -

    If they do have polarity, they're marked rather clearly.
    diVine Sound - my DIY speaker designs at diVine Audio

    Comment

    • Kevin P
      Member
      • Aug 2000
      • 10809

      #3
      Polypropylene capacitors are non-polarized. You can use it in either direction.

      Comment

      • JonMarsh
        Mad Max Moderator
        • Aug 2000
        • 15261

        #4
        Originally posted by CADman_ks
        I have these capacitors in my crossover:



        I now have them built, and I'm wondering if I have them going the correct direction.

        Is there a "+" and "-" to this style of cap?

        CADman_ks

        Those are metallized film polypropylene capacitors- they do not have polarity, and you can connect them interchangeably. Electrolytic caps come in two versions; most are polarized, but NP types exist which are actually two polarized caps connected back to back. Not really a very nice way to make capacitors.
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        Comment

        • CADman_ks
          Senior Member
          • Jan 2012
          • 497

          #5
          Thanks!!!

          Thanks to all, and this is good information for others that may have the same question.

          I thought that was the case, but I was just checking to make sure.

          CADman_ks
          CADman_ks
          - Stentorian build...
          - Ochocinco build...
          - BT speaker / sub build...

          Comment

          • Boulderjl
            Junior Member
            • Feb 2021
            • 2

            #6
            Originally posted by CADman_ks
            Thanks to all, and this is good information for others that may have the same question.

            I thought that was the case, but I was just checking to make sure.

            CADman_ks
            For sure, I was just freaking out that my built and installed crossovers had the polarity incorrect. I havnt cpompleted the speakers yet. Came across this post and now I can relax. Thanks

            Comment

            • CADman_ks
              Senior Member
              • Jan 2012
              • 497

              #7
              LOL. I'm glad that this was helpful for you!

              Make no bones about it, I'm no spark and wires guy, well, I'm a sparks guy, typically when I have it wrong!!! I absolutely know just enough to be dangerous with electricity!!!

              Have a great day!!
              CADman_ks
              - Stentorian build...
              - Ochocinco build...
              - BT speaker / sub build...

              Comment

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