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Paul Carmody Corian Speedster Build

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  • Paul Carmody Corian Speedster Build

    Hi All,

    Before I begin, I want to take a moment to thank Paul Carmody and all of you within the DIY audio community for sharing your time and knowledge with the rest of "us" audio laymen. I am an Industrial Designer by trade, so my knowledge is limited to Physical/mechanical design, material/finish, and fabrication. I confess that without your expertise, I for one would not have embraced this project.

    Long story long, after spending many years using a vintage pair of Dynaco A-35's and a Marantz 2270 (which I loved both) I decided that it was time to reduce the physical size of my audio setup. With kids I just didn't have the space anymore. I did my research and auditioned Paradigm Atoms, Paradigm Shift A2s, and Audioengine A2 and A5s in my home. I slowly began to realize that there just was not anything on the market that met my criteria of being both compact and deliver on the "full, warm, and lively" sound that I had become accustomed to. Not to mention that as a designer, I admit that I "listen" a lot with my eyes, and most speakers were just visually unacceptable. That is when I stumbled upon Paul's Speedsters. I loved how the design was focused around quality components and a fun experience...not the usual "It sounds great considering how cheap the driver is" model (not a bad approach, just not what I was looking for).

    Since I am trained in Solidworks, own a hobbyist CNC, had some scrap Corian from a recent kitchen remodel ... I thought why not give it a shot.... So I did. Images from my build can be found below. I will add sections as I have time.

    I know that this design is a few years old, but if you have stumbled upon this thread while surfing the internet (as I did) and do not know about these speakers or the nuances of their design, more information can be found at Paul Carmody's website: https://sites.google.com/site/undefinition/speedster

    Additionally, all parts (minus the cabinets) necessary to build this project can be purchased from meniscus audio: http://meniscusaudio.com/speedster-pair-p-1219.html

    Last edited by dan_clements; 08-18-2013, 01:05 AM.

  • #2
    Re: Paul Carmody Corian Speedster Build

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      Re: Paul Carmody Corian Speedster Build

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      • #4
        Re: Paul Carmody Corian Speedster Build

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        • #5
          Re: Paul Carmody Corian Speedster Build

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          • #6
            Re: Paul Carmody Corian Speedster Build

            :eek: those look great, and the pics look like something from a magazine. How much was the corian? where did you source it from? is it difficult to work with? also jelly of the eams chair
            Music System- Pioneer PL-540 TT, Sansui AU11000A, Curt C's Invictus
            Other speakers built- Paul Carmody: Classix II, hitmakers, overnight sensations. Troels Gravessen: 3 way Classics, center-641

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            • #7
              Re: Paul Carmody Corian Speedster Build

              These. Look. Awesome. I actually really love the wood panel on the bottom. I also can't see the seams...I have a ton of questions, but I will wait patiently for the build log.

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              • #8
                Re: Paul Carmody Corian Speedster Build

                You are either a professional photographer... or could be one.

                Great speaker, and great pictures.
                My projects
                https://picasaweb.google.com/112307725038877176664

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                • #9
                  Re: Paul Carmody Corian Speedster Build

                  That's hot.

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                  • #10
                    Re: Paul Carmody Corian Speedster Build

                    Got to love speaker porn, very nice photos.
                    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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                    • #11
                      Re: Paul Carmody Corian Speedster Build

                      Originally posted by ckmoore View Post
                      You are either a professional photographer... or could be one.

                      Great speaker, and great pictures.
                      A shallow "depth of field" causes the affect of drawing ones attention to the object in focus. Nice technique. I used it a lot myself back in the day. You can achieve it by using a wider aperture and faster shutter speed if your camera has the ability to adjust it.

                      Nice job on those cabinets. I'm curious also about how you built them.

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                      • #12
                        Re: Paul Carmody Corian Speedster Build

                        The photography is pure visual candy! Is that matte white?

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                        • #13
                          Re: Paul Carmody Corian Speedster Build

                          They look nice, drool @ your Eames chair :eek:

                          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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                          • #14
                            Re: Paul Carmody Corian Speedster Build

                            MATERIAL
                            As I stated before, I stumbled upon some 1/2" Glacier White Corian from a friend who had just completed a kitchen remodel. After doing a bit of research, I realized that there just wasn't very much information regarding Corian (and especially Corian speaker building) online. There are a few reasons why...
                            1) Corian is a very expensive material compared to MDF, so it tends to be cost prohibitive.
                            2) You need to be certified to purchase Corian material and the specialty adhesive necessary to get a seamless look (more on that later).
                            Having said that, Corian makes a fantastic cabinet as it is extremely dense material, and cuts/shapes easily.

                            Cutting material to fit on CNC


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                            • #15
                              Re: Paul Carmody Corian Speedster Build

                              DESIGN
                              All design for this project was done in Solidworks. Cabs were designed to spec, and all non-fabricated components were measured and modeled to ensure a perfect fit. Overall design intent was to have a really minimal design with a focus on the Corian material, and a "Monolithic" or "Unibody" design. Removable wood panel was hidden on the bottom, and the bass port was machined into the rear panel.












                              Individual Parts were imported into Rhino CAM to translate 3d Data to Toolpaths that can be read by the CNC.


                              Front Baffle (side one) Being cut on CNC using a 1/4 Carbide tip end mil.



                              Video of Cut





                              Check to ensure proper fit


                              Front Baffle (Side two) Cutting an alignment fixture to ensure perfect alignment of side two cut


                              Toolpath for Driver "breathing room"


                              Cutting Baffle side two


                              MORE TO COME!
                              Last edited by dan_clements; 08-20-2013, 12:38 AM.

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