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  • #31
    I think there was some misunderstanding going on. This past SDC weekend told me that.
    if the tweeter has a waveguide and is as small as required, only then are waveguides permissible. You cannot add your own.
    Cutting down of faces to fit the rules is also prohibited.

    Wolf
    "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
    "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
    "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
    "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

    *InDIYana event website*

    Photobucket pages:
    https://app.photobucket.com/u/wolf_teeth_speaker

    My blog/writeups/thoughts here at PE:
    http://techtalk.parts-express.com/blog.php?u=4102

    Comment


    • jhollander
      jhollander commented
      Editing a comment
      I may have started that discussion, where any pro-style compression driver where you have to add a waveguide would be not allowed. Carving out a wave guide in the baffle for a tweeter would not be allowed. I assume rear mounting a tweeter would also Not be allowed

    • Billet
      Billet commented
      Editing a comment
      To clarify, can we use a horn driver that is intended to be used with a horn as long as the horn is 4 1/8" or smaller?

    • deschu
      deschu commented
      Editing a comment
      Thank you for the clarification!

  • #32
    Since compression drivers need horns, and some come with, as long as it is under dimension, this is fine. A 4" square CD/horn is okay. This will likely limit to 1" exit drivers and loading will likely not be better than 2k.
    Wolf
    "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
    "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
    "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
    "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

    *InDIYana event website*

    Photobucket pages:
    https://app.photobucket.com/u/wolf_teeth_speaker

    My blog/writeups/thoughts here at PE:
    http://techtalk.parts-express.com/blog.php?u=4102

    Comment


    • Wolf
      Wolf commented
      Editing a comment
      Nope, no homemade horns.

    • DrewsBrews
      DrewsBrews commented
      Editing a comment
      Limit to the size of the CD magnet? Or just purely the horn/faceplate. Ive got some CDs that I think are 4.5"dia. Otherwise ill probably have to buy something else.

    • Wolf
      Wolf commented
      Editing a comment
      Fine, let's say <5" diameter magnet for CDs.

  • #33
    This rear mounted tweeter is out but what about a reflector on the tweeter?
    John H

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

    Comment


    • #34
      Not sure what that would gain you. Not this time.
      Wolf
      "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
      "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
      "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
      "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

      *InDIYana event website*

      Photobucket pages:
      https://app.photobucket.com/u/wolf_teeth_speaker

      My blog/writeups/thoughts here at PE:
      http://techtalk.parts-express.com/blog.php?u=4102

      Comment


      • #35
        I'm still a newb. Though from what I've learned I'm pretty sure the bare domes with big rear chambers will steal the show... But the calling to go against the grain has always been strong for me. Whatever it is I'm Interested to hang.

        Comment


        • #36
          Ben, Can I use a PS180 as my tweeter??(and crossed over accordingly)
          it has a wizzer cone less than 4'' I believe

          Comment


          • DrewsBrews
            DrewsBrews commented
            Editing a comment
            See post #6

        • #37
          Is the 1.5 cubic foot limit internal gross?
          Craig

          I drive way too fast to worry about cholesterol.

          Comment


          • #38
            Yep, gross internal volume.

            Wolf
            "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
            "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
            "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
            "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

            *InDIYana event website*

            Photobucket pages:
            https://app.photobucket.com/u/wolf_teeth_speaker

            My blog/writeups/thoughts here at PE:
            http://techtalk.parts-express.com/blog.php?u=4102

            Comment


            • #39
              What about a low freq driver with a whizzer cone? It seems to me that the whizzer is kind of a midrange, but I thought I'd ask.

              Comment


              • #40
                I don't care if the woofer has one, or is a widebander. I do not want either in the tweeter.
                Wolf
                "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
                "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
                "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
                "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

                *InDIYana event website*

                Photobucket pages:
                https://app.photobucket.com/u/wolf_teeth_speaker

                My blog/writeups/thoughts here at PE:
                http://techtalk.parts-express.com/blog.php?u=4102

                Comment


                • #41
                  Perhaps obvious questions:
                  1. Sealed, ported, passive radiators, etc., all ok?
                  2. Woofer size is 8 to 12, or must be marketed at 8, 10, or 12 inches? Eg is the Satori WO24P in or out? (Marketed as 9 1/2”)
                  thanks!
                  --Derek

                  Comment


                  • #42
                    Since there is no price limit, all forms of box are allowed without price additions, but normally/other years PRs would involve price inclusion. 9.5 is between 8 and 12, so that is fine.
                    Wolf
                    "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
                    "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
                    "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
                    "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

                    *InDIYana event website*

                    Photobucket pages:
                    https://app.photobucket.com/u/wolf_teeth_speaker

                    My blog/writeups/thoughts here at PE:
                    http://techtalk.parts-express.com/blog.php?u=4102

                    Comment


                    • #43
                      If I am using a huge slot port, does that count in the 1.5 ft3? I am guessing that the internal volume has to be 1.5 ft3 no matter what. Just want to clarify, because if that is the case, I am going PR.

                      Comment


                      • #44
                        Originally posted by analogkid455 View Post
                        If I am using a huge slot port, does that count in the 1.5 ft3?
                        Yes, per post 38 - GROSS internal is what you start with, which hast to be 1.5 ft3 or less. Ports, driver displacement, bracing, etc. will reduce that to NET internal, which is what your woofer and box modelling cares about.

                        Originally posted by analogkid455 View Post
                        I am guessing that the internal volume has to be 1.5 ft3 no matter what. Just want to clarify, because if that is the case, I am going PR.
                        Well, you can be anywhere LESS than 1.5 ft3 gross if you want. The larger drivers will push a lot of designs up to this limit, but a 1.5 ft3 stand mount speaker is pretty darn bit. I'm trying to figure out how to go smaller but I'm giving up valuable low-end extension if I do. ugh...stupid trade-offs.

                        Edit: It does NOT have to be a stand mount, but that is what I'm trying to do so it makes it more difficult. A 1.5 ft3 tower is pretty easy.

                        Comment


                        • analogkid455
                          analogkid455 commented
                          Editing a comment
                          Thanks for the reply. I will probably do PRs but just trying to think of everything. I can get extension, my problem is sensitivity. The trade-offs are real!

                      • #45
                        MTM's and 2.5's Okay?

                        Comment


                        • analogkid455
                          analogkid455 commented
                          Editing a comment
                          From what I understand, MTM are allowed but 2.5s are NOT!

                        • a4eaudio
                          a4eaudio commented
                          Editing a comment
                          That is also what I would gather from Minor Rule #1:
                          - 2-way passive designs only
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