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Creating Tanks in PCD7

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  • Creating Tanks in PCD7

    Hi To All,
    New member here and my first post. I have a quick question for those familiar with PCD7. How does a person go about creating a tank in PCD7 like the one attached from Xsim?

    Thanks in Advance,
    Rich
    Attached Files

  • #2
    Unfortunately, no pcd will not model that circuit. At least not directly. It might be possible to do as separate frd and zma files.
    Implement the 2nd order filter and save out the response for both frd and zma files. Then reload those files and add the tank circuit.

    For what it's worth, I've not seen evidence that the resistor is really necessary. The impedance does drop of course but at such a high freq that there is no program material at that point and no power being applied.
    https://www.facebook.com/Mosaic-Audi...7373763888294/

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    • #3
      It can be done without the resistor. A 20 ohm would make the filter rather tame though. A 2 ohm or maybe 4 ohm is what I use. Sim it without the resistor, and just assume the notch is not as deep. The problem with a notch is that the frequencies above the notch tend to be louder.

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      • #4
        Depending on the size of the cap your can use the resistor to change the shape of the knee and also bring up the impedance at higher frequencies. You see that on woofers where you might want to use a tank at lower frequencies.
        John H

        Synergy Horn, SLS-85, BMR-3L, Mini-TL, BR-2, Titan OB, B452, Udique, Vultus, Latus1, Seriatim, Aperivox,Pencil Tower

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        • #5
          It can be done in WinPCD. If you have the mechanics of PCD down, WinPCD should be easy. Here's a shot of the schematic overlay of all the XO components you can add from a driver's main screen.

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          • #6
            Thanks Guys,
            I really appreciate the feedback. I will take a look at WinPCD. That could be an excellent solution.

            Best,
            Rich

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            • #7
              If you can use PCD7, they you can use WinPCD, plus it runs reliably on my old laptop, not always so with PCD.
              http://techtalk.parts-express.com/fo...khanspires-but
              http://techtalk.parts-express.com/fo...pico-neo-build
              http://techtalk.parts-express.com/fo...ensation-build

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              • #8
                Here it is in PCD without the resistor. You have to use the LCR filter before the xo but by using an extremely high value for R, you effectively take it out of the circuit leaving just an inductor and capacitor in parallel.

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                • #9
                  Thanks mobius,
                  I will give that a try with the complete xo in place using same values from Xsim. There are some features in PCD that are not present in Xsim that can be very useful.

                  Best,
                  Rich

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