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2002 OEM tweeter 22Khz?

Discussion in 'Audio & Video' started by stevon, Aug 10, 2025.

  1. Aug 10, 2025 at 3:26 PM
    #1
    stevon

    stevon [OP] New Member

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    I'm upgrading my door speakers and the factory tweeter has an in series 1.8 uf bi-polar filter cap on it. That calculates to 22Khz. Can I install the 6.5 lower speaker, just use the factory harness and leave these connected with my new head unit? Using the search tool I couldn't find a definitive answer, guess it couldn't hoit leaving it connected.

    Stephen
     
  2. Aug 10, 2025 at 5:49 PM
    #2
    KNABORES

    KNABORES Sarcasm incoming

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  3. Aug 10, 2025 at 7:50 PM
    #3
    stevon

    stevon [OP] New Member

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    KNABORES,

    Thanks , if there is too much high frequencies I can always disconnect them

    Stephen

     
  4. Aug 10, 2025 at 8:39 PM
    #4
    blenton

    blenton New Member

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    A single 1.8uf cap would be 22khz for a 4 ohm tweeter, but that xover frequency would make the driver virtually useless since the upper limits of human hearing are usually 17-20khz. It’s not completely out of the realm of possibility if the xover designer is padding the tweeter with a single cap, but you have a downward tilting response the entire spectrum, which is not ideal in 99% of situations.

    However, if the tweeter is 8 ohms (I’d wager it isn’t 4 ohms), it would set the xover point to 11khz, which is usable enough for a single order stock tweeter crossed to a woofer run wide open. You are 6 db down at 5.5khz, 12 db at 2700hz, 18db at 1350hz, and 24db at 675hz. It would typically be unobtrusive to use with a new 6.5” woofer so long as the tweeter efficiency isn’t much higher than that of the woofer.
     
  5. Aug 11, 2025 at 5:13 PM
    #5
    stevon

    stevon [OP] New Member

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    blenton,

    thanks for the info but 4ohm is stamped on the tweeter magnet. I have a set of 5k 12db crossovers that could be used to bypass the factory bipolar inline cap.

    Stephen



    5K Xover.png
     
    Last edited: Aug 11, 2025

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