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Paul's Swope MTM in tower build

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  • Paul's Swope MTM in tower build


  • #2
    Re: Paul's Swope MTM in tower build

    Now the important part.

    I took the design to work because I wasn’t sure how to do internal braces. We put the box in a wind tunnel, hooked up the Commodore 64, and made measurements. It took almost 2 years, but the findings were remarkable. I thought all along that a perfect window frame would work. Boy was I wrong. The sims came out that you want jagged edges and one optimized knock out in one of the windows. (See pics)

    Here is the code used if anyone wants to use it for themselves.

    http://www.youtube.com/watch?v=AtIooRYjpeE



    I don't recommend anyone doing this by hand. I did, but I've had years of practice. If you have access to a CNC machine, by all means use it. The measurements need to be exact for this to work.

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    • #3
      Re: Paul's Swope MTM in tower build

      Here are the other very important parts. We had to do this by hand because the Commodore gave a Syntax Error.



      I thought this was a mistake, but it turns out it was the best part of the design.

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      • #4
        Re: Paul's Swope MTM in tower build

        This is the part I can't explain. The MCS.

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        • #5
          Re: Paul's Swope MTM in tower build

          :applause:
          My projects
          https://picasaweb.google.com/112307725038877176664

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          • #6
            Re: Paul's Swope MTM in tower build

            This tool cost more than my router, miter saw, and band saw combined.
            Lie Nielsen makes some incredible tools. Running this over wood is the one of the great satisfactions in life.
            No sanding needed as it produces a butter smooth surface when done.





            Almost done. Still have the top, legs, and finish to do. Hopefully I'll be done this weekend.
            Oh, almost forgot. Here's a response graph at the listening position. No Smoothing!!

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            • #7
              Re: Paul's Swope MTM in tower build

              Very nice, very nice, good build thread.

              Don't forget the 15 ohm resistor for maximum SPL and SQ, \m/
              If we all reacted the same way, we'd be predictable, and there's always more than one way to view a situation.
              What's true for the group is also true for the individual. It's simple: Overspecialize, and you breed in weakness.
              It's slow death.

              //Burn n' Die//Dream Weaver//Maximus//ABC Bookshelf Speakers//Dayton Twin Towers

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              • #8
                Re: Paul's Swope MTM in tower build

                Only flat to 20k? You want to use a hand made arrow head to carve the window brace for 30k+ extension. I broke my (ancient Hebrew) HF hole saw making braces and had to use a saber saw freehand.. no photos were taken of the result

                Nice baffles!

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                • #9
                  Re: Paul's Swope MTM in tower build

                  I added mattress topper to the inside, but my dog decided to lay on it before I cut it up.
                  It was full of dog hair, so she thinks she should get recognition in this build.



                  There's about 2 oz of dog hair in there which I think contributes to the flat frequency response. If anyone wants some, I have extra.

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                  • #10
                    Re: Paul's Swope MTM in tower build

                    This is the funniest build log I've ever read. You win 1000 internets.
                    Isn't it about time we started answering rhetorical questions?

                    Paul Carmody's DIY Audio Projects
                    Twitter: @undefinition1

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                    • #11
                      Re: Paul's Swope MTM in tower build

                      Well at least I know my window braces are *SUPERB*

                      Great Build Thread!

                      रेतुर्न तो थे स्रोत
                      return to the source
                      leviathan system thread
                      deadhorse thread
                      shockwave build thread

                      instagram :: greywarden_13

                      in war, victory . . . in peace, vigilance . . . in death, sacrifice.

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                      • #12
                        Re: Paul's Swope MTM in tower build

                        Cute little dog. Lab, or a mix thereof?

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                        • #13
                          Re: Paul's Swope MTM in tower build

                          Originally posted by chrisn View Post
                          Only flat to 20k? You want to use a hand made arrow head to carve the window brace for 30k+ extension. I broke my (ancient Hebrew) HF hole saw making braces and had to use a saber saw freehand.. no photos were taken of the result

                          Nice baffles!
                          I didn't want to show more of the graph because my mic isn't the best. I did however send it out to be calibrated, but they said the best they could do is 20-20k. I still find it one of the best bang for the buck mics you can use for measurements.

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                          • #14
                            Re: Paul's Swope MTM in tower build

                            Well played sir....well played.
                            Bryan K.

                            Midwest Audio Club

                            Speedster | Sub Attachť | The Wildeman | Sean's NLA Towers | CO‹GAR, COUGAR II and CO‹GAR JR | Triton | Lithium | J-Boom | Trym MLTL | Docere MLTL

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                            • #15
                              Re: Paul's Swope MTM in tower build

                              There's your problem, spend a few more dollars and go pro with this:

                              Click image for larger version

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