I have this old pair of Technics SB-3130, they are three way speakers. Both of the super tweeters are dead (infinite resistance) and I’m not sure if this impact the range of frequency feeded to the tweeter. Given the schematic diagram, if I remove the super tweeter, should I modify something to have all the high frequencied on the tweeter?

  • @CroquetteEnglish
    1•4 months ago

    If you follow the circuit, for the super tweeter, you have a RC passive high freq filter, while the tweeter has a passive RCL band filter.

    Simply removing the super tweeter will remove the high frequency.

    Otherwise you need to calculate a new band pass frequency with the new upper freq limit and change the 3.9uF cap accordingly

    Edit: by simply removing L2, you will create a high pass filter with the high frequency being the value of the current C2 L2 Filter.

    And if you remove L2, you will get all the subwoofer frequency as well.

    So simply removing L2 won’t work.

    You either replace the super tweeter or calculate a new value for C2 and replace it.