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  • Baffle step - I get the concept.

    Looking for a simple, to the point explanation to calculate compensation for it.

    I have a 3-way* closure w/an 8" wide, 42" tall baffle. I've estimated the upper corner frequency @ 1460 hz. I'm struggling w/calculating the lower corner frequency.
    * active XO w/built in PEQ including shelving - user defined slopes, too.

    I realize theory & reality don't line up perfectly but I'm looking for a starting place. Read MANY posts and articles on BSC but cant find one that keeps it simple and to the point.

    Thanks in advance for your help
    Samsung 60"
    Rotel RSP 1068
    LG BD-C6500 Blu Ray, Charter Rcvr, Denon LA 3100 LDP, Phillips 935 CD Chgr
    RTi A7 (Bi-amped!)
    Tops: Rotel RB-985->AR 12 ga OFC
    Bottoms: Belles->MC 10 ga ***
    Rotel RB-985->12 ga MC->Polk CSi A6 ***
    Behringer DEQ 2496->Mackie 1400->10 ga MC ->DBX 15 DVC Sub rewired w/10 ga MC
    Hafler XL-280->AR 12 & 18 ga OFC->Polk RTi A1***

    * Plan to bi**/tri***-amp all channels correctly-Dad of many keeps me busy

  • #2
    Use one third of 1460.

    Comment


    • #3
      Is something like this what you're looking for? https://www.trueaudio.com/st_diff1.htm Maybe someone can point you to some software that does BSC sims.

      Ron
      C-Note Iron Driver Build
      The Lydias
      The Cherry π's
      The Champs - Iron Driver 2015 Entry
      My Projects Page

      The good thing about science is that it's true whether or not you believe in it. - Neil deGrasse Tyson
      http://www.youtube.com/watch?v=cjuGCJJUGsg

      Comment


      • #4
        http://diyaudioprojects.com/Technica...it-Calculator/

        There are others as well. It is a pretty straightforward calculation to find the corner frequency, a touch more complex perhaps, to calculate the values needed. Best, perhaps, to learn how to use modeling software.
        Don't listen to me - I have not sold any $150,000 speakers.

        Comment


        • #5
          http://www.tolvan.com/index.php?page=/edge/edge.php
          "I just use off the shelf textbook filters designed for a resistor of 8 ohms with
          exactly a Fc 3K for both drivers, anybody can do it." -Xmax

          Comment


          • #6
            Originally posted by davidB View Post
            Use one third of 1460.
            ~ 486hz is the lower "corner" frequency? Almost too easy. All those hours wasted reading, reading, reading...

            THANK YOU, THANK YOU, THANK YOU!
            Samsung 60"
            Rotel RSP 1068
            LG BD-C6500 Blu Ray, Charter Rcvr, Denon LA 3100 LDP, Phillips 935 CD Chgr
            RTi A7 (Bi-amped!)
            Tops: Rotel RB-985->AR 12 ga OFC
            Bottoms: Belles->MC 10 ga ***
            Rotel RB-985->12 ga MC->Polk CSi A6 ***
            Behringer DEQ 2496->Mackie 1400->10 ga MC ->DBX 15 DVC Sub rewired w/10 ga MC
            Hafler XL-280->AR 12 & 18 ga OFC->Polk RTi A1***

            * Plan to bi**/tri***-amp all channels correctly-Dad of many keeps me busy

            Comment


            • #7
              Originally posted by Ron_E View Post
              Is something like this what you're looking for? https://www.trueaudio.com/st_diff1.htm Maybe someone can point you to some software that does BSC sims.

              Ron
              Been there. The internet has plenty of long-winded articles, etc, most of which seems to go over my head.

              I'm so grateful for the above brief, to the point response. Even if it's off a little, I now have a starting place and very powerful, easy to use DSP to correct it.
              Samsung 60"
              Rotel RSP 1068
              LG BD-C6500 Blu Ray, Charter Rcvr, Denon LA 3100 LDP, Phillips 935 CD Chgr
              RTi A7 (Bi-amped!)
              Tops: Rotel RB-985->AR 12 ga OFC
              Bottoms: Belles->MC 10 ga ***
              Rotel RB-985->12 ga MC->Polk CSi A6 ***
              Behringer DEQ 2496->Mackie 1400->10 ga MC ->DBX 15 DVC Sub rewired w/10 ga MC
              Hafler XL-280->AR 12 & 18 ga OFC->Polk RTi A1***

              * Plan to bi**/tri***-amp all channels correctly-Dad of many keeps me busy

              Comment


              • #8
                Originally posted by johnnyrichards View Post
                http://diyaudioprojects.com/Technica...it-Calculator/

                There are others as well. It is a pretty straightforward calculation to find the corner frequency, a touch more complex perhaps, to calculate the values needed. Best, perhaps, to learn how to use modeling software.
                very helpful for passive XOs and no DSP. I justneeded the frequencies.
                Samsung 60"
                Rotel RSP 1068
                LG BD-C6500 Blu Ray, Charter Rcvr, Denon LA 3100 LDP, Phillips 935 CD Chgr
                RTi A7 (Bi-amped!)
                Tops: Rotel RB-985->AR 12 ga OFC
                Bottoms: Belles->MC 10 ga ***
                Rotel RB-985->12 ga MC->Polk CSi A6 ***
                Behringer DEQ 2496->Mackie 1400->10 ga MC ->DBX 15 DVC Sub rewired w/10 ga MC
                Hafler XL-280->AR 12 & 18 ga OFC->Polk RTi A1***

                * Plan to bi**/tri***-amp all channels correctly-Dad of many keeps me busy

                Comment

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