Home Forums DIY Speakers and Subwoofers What measurements are good for bracing and damping?

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    Tone
    Participant

    So I’m doing some experiments with adding bracing to my speakers and bitumen.

    I don’t have an accelerometer, so I’ve been taking mostly RT60 decay measurements with REW.

    And of course some freq response sweeps at the listening spot.

    What measurements are best to take to see if there has been a positive result in let’s say adding bracing in my speakers?

    Is there an accelerometer I can get to connect to REW?

    Btw all these mods i am doing are completely reversible.

    Thanks in advance !

  • What measurements are good for bracing and damping?

  • 123toid

    Administrator
    June 23, 2022 at 4:49 pm

    @Tone One of the easiest is using DATS V3 and taking an impedance sweep. You will see humps in the impedance indicating resonance. The higher they are the worse the resonance. Obviously if you add bracing and or sound absorption material and the impedance humps disappear or get smaller you know it is working. You can also see if it is affecting your tuning frequency. Just keep in mind some of the resonances might be due to port resonance.


    What measurements are good for bracing and damping?

    • Tone

      Member
      June 27, 2022 at 12:10 pm

      Thanks man

      Using DATS , are those humps in the impedance sweep pretty evident?

      I mean are they better than using an accelerometer ?

      I found an accelerometer from Meniscus Audio which I will use with my recording interface into REW

      Appreciate the help!

    • 123toid

      Administrator
      June 29, 2022 at 2:11 am

      @Tone You can use it this way in order to help you find out where to add mroe bracing. But in general if there are resonances you should be able to see them on your impedance graph.