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Capacitor Selection: Electrolytic v Poly

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  • #16
    Originally posted by jhollander View Post
    Standard analog filters would not be protected, assuming you are not sharing (or haven't elsewhere) the drivers, box, etc.
    Thanks, but as the cabinet and drivers are already on the designer's website, if I post the schematic I think I would be giving away the design.

    The answers above will save me many $$!

    Geoff

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    • #17
      Originally posted by Geoff Millar View Post
      reducing the value of that capacitor doesn't seem to change the FR that much.
      That's because it's value is too large to affect FR. It will add another 45 degrees of phase shift, which is a good idea assuming the LP is 2nd order, but being too large it won't give the steeper roll off below F3 compared to a 2nd order HP, along with the benefits that carries with it.

      www.billfitzmaurice.com
      www.billfitzmaurice.info/forum

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      • #18
        Originally posted by billfitzmaurice View Post
        That's because it's value is too large to affect FR. It will add another 45 degrees of phase shift, which is a good idea assuming the LP is 2nd order, but being too large it won't give the steeper roll off below F3 compared to a 2nd order HP, along with the benefits that carries with it.
        Thanks for the info, the LP is indeed a second order.

        Geoff

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