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My MWAF 2014 entry: Plan-Tanic

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  • My MWAF 2014 entry: Plan-Tanic

    This was my entry for the "open unlimited" category. Didn't place in the contest, but if anyone is interested, I will post complete construction details & pictures. I've been working on these, on & off, for about 3 1/2 years. They have gone through several iterations (failures) along the way. They seemed to be sounding pretty good to my ears, so I brought them to the show.

    Congratulations to all the winners and contestants at the show. Lots of great sounding speakers. Enjoyed talking with fellow builders about all their unique & interesting designs. Took tons of pictures. Look forward to attending again next year.

    Bill S.

    Click image for larger version

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    Linehopper: http://techtalk.parts-express.com/sh...Esoteric-build
    Plan-Tanic: http://techtalk.parts-express.com/sh...ght=Plan-Tanic

  • #2
    Re: My MWAF 2014 entry: Plan-Tanic

    I would be interested in reading about them, they look very nice and I'm sure they sounded great too! I watched the live streaming and there was some competition in the unlimited class.
    What kind of finish is that? Is it all painted, or is the trim real wood? Nice job!
    Paul

    The "SB's" build page
    http://techtalk.parts-express.com/sh...-4-(pic-heavy)

    Comment


    • #3
      Re: My MWAF 2014 entry: Plan-Tanic

      Sorry for the thread jack... but who were the winners this year?
      Expensive caps need time to break in. More expensive caps take a long time. Cheap caps sound great right out of the box.

      Why I don't spray in first gear: http://s1138.photobucket.com/albums/...t=100_2585.mp4

      Comment


      • #4
        Re: My MWAF 2014 entry: Plan-Tanic

        Originally posted by 4thtry View Post

        This was my entry for the "open unlimited" category. Didn't place in the contest, but if anyone is interested, I will post complete construction details & pictures. I've been working on these, on & off, for about 3 1/2 years. They have gone through several iterations (failures) along the way. They seemed to be sounding pretty good to my ears, so I brought them to the show.
        I am, and probably most of us, are always interested in new builds and construction details. I sometimes pick up neat ideas from them.
        Don't worry, if your parachute fails, you have the rest of your life to fix it.

        If we all did the things we are capable of doing, we would literally ASTOUND ourselves - Thomas A. Edison

        Some people collect stamps, Imelda Marcos collected shoes. I collect speakers.:D

        Comment


        • #5
          Re: My MWAF 2014 entry: Plan-Tanic

          Me too - am interested - Are those planers or electro-statics - can't make out form the images. any case - really nice mirror finish

          Comment


          • #6
            Re: My MWAF 2014 entry: Plan-Tanic

            [QUOTE=4thtry;2003020]...Took tons of pictures...QUOTE]

            Feel free to post them ;)

            Nice build! I've been very interested in non-traditional builds lately, such as planars, amt's, ribbons, etc.. I bet they sound great, nice work!
            Projects:

            transcenD: http://techtalk.parts-express.com/fo...5035-transcend
            Summits: http://techtalk.parts-express.com/sh...75-The-Summits
            References: http://techtalk.parts-express.com/sh...-My-References
            Vintage Style 2-way: http://techtalk.parts-express.com/sh...-vintage-2-way

            Comment


            • #7
              Re: My MWAF 2014 entry: Plan-Tanic

              ok, i see now that they are planers... the front shot from 6th pics made it clear.

              http://s1151.photobucket.com/user/6t...ow/MWAF%202014

              Comment


              • #8
                Re: My MWAF 2014 entry: Plan-Tanic

                (kenny_k raising his hand) Bill, I'm interested in knowing more.
                Kenny

                http://www.diy-ny.com/
                DIY NY/NJ 2014 https://www.youtube.com/watch?v=FGwA...ature=youtu.be
                Man does not live by measurements alone, a little music helps.

                Comment


                • #9
                  Re: My MWAF 2014 entry: Plan-Tanic

                  Bill really interested in the transform that you used, and think that many many many in the forums might also. Large sounding sub in a smaller box... everyone wants that!


                  BTW, Have been reading online that MiniDSP site, but seems that the smallest setup is for a pair of speakers, not a sole sub. I am continuing to read. Also found something in new AVRs called Audyssey XT equalization... seems that might do the trick also, but not sure yet... maybe an upgrade to the AVR would make the Mini DSP not necessary?
                  Last edited by Difvision; 07-15-2014, 09:17 AM.

                  Comment


                  • #10
                    Re: My MWAF 2014 entry: Plan-Tanic

                    Bill really interested in the transform that you used, and think that many many many in the forums might also. Large sounding sub in a smaller box... everyone wants that!


                    BTW, Have been reading online that MiniDSP site, but seems that the smallest setup is for a pair of speakers, not a sole sub. I am continuing to read. Also found something in new AVRs called Audyssey XT equalization... seems that might do the trick also, but not sure yet... maybe an upgrade to the AVR would make the Mini DSP not necessary?




                    Originally posted by 4thtry View Post
                    This was my entry for the "open unlimited" category. Didn't place in the contest, but if anyone is interested, I will post complete construction details & pictures. I've been working on these, on & off, for about 3 1/2 years. They have gone through several iterations (failures) along the way. They seemed to be sounding pretty good to my ears, so I brought them to the show.

                    Congratulations to all the winners and contestants at the show. Lots of great sounding speakers. Enjoyed talking with fellow builders about all their unique & interesting designs. Took tons of pictures. Look forward to attending again next year.

                    Bill S.

                    [ATTACH=CONFIG]48467[/ATTACH]

                    Comment


                    • #11
                      Re: My MWAF 2014 entry: Plan-Tanic

                      Got a little highjack going on Difvision.
                      Kenny

                      http://www.diy-ny.com/
                      DIY NY/NJ 2014 https://www.youtube.com/watch?v=FGwA...ature=youtu.be
                      Man does not live by measurements alone, a little music helps.

                      Comment


                      • #12
                        Re: My MWAF 2014 entry: Plan-Tanic

                        Thanks, everyone, for your interest in and kind comments about my speakers. I will post details & several pictures over the next few days.

                        bullittstang: It is all 3/4" MDF, painted with black shadow lines to hid the seams. I applied approximately 7-10 coats of automotive high build primer to create a good base and then 2 coats of oil based high gloss enamel. The burgundy color was achieved by mixing a rattle can cap full of high gloss black with one quart of ruby red. Everything was sprayed on at roughly 30psi using my Dad's old antique
                        "Model 7" spray gun.

                        ani_101: Those are the B&G RD40 planar transducers.

                        Difvision: I will post info on my experiences building the transform circuit. I used the OmniMic near field measurement technique to adjust my component values. You should start a new thread in the tech talk section on "what to do with my new 18" door prize." Congrats, by the way, on winning that prize and on your 2nd place finish. Your speakers had excellent tonal balance, clarity, & imaging.

                        Bill S.
                        Linehopper: http://techtalk.parts-express.com/sh...Esoteric-build
                        Plan-Tanic: http://techtalk.parts-express.com/sh...ght=Plan-Tanic

                        Comment


                        • #13
                          Re: My MWAF 2014 entry: Plan-Tanic

                          Drivers are the B&G RD40 planar transducer and the Dayton Audio 12" Titanic MK III:

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                          After unpacking, I built two 3/4" MDF baffles for the RD-40s. It was necessary to rout two large recesses at the inside top & bottom of the baffle so that the driver could be mounted flush.

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                          I then mounted the baffle to a 12"x12" base with 2 steel supporting brackets so that I could hook them up to an amplifier and begin to make OmniMic measurements.

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                          When installing the RD40s on the baffle, I initially bolted them directly to the back of the 3/4" thick baffle. But when I did this, the drivers were not flush with the front of the baffle. To correct this, I inserted several washers between the MDF and driver flange at each mounting hole.

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                          Continued tomorrow . . .
                          Linehopper: http://techtalk.parts-express.com/sh...Esoteric-build
                          Plan-Tanic: http://techtalk.parts-express.com/sh...ght=Plan-Tanic

                          Comment


                          • #14
                            Re: My MWAF 2014 entry: Plan-Tanic

                            Originally posted by PWR RYD View Post
                            Sorry for the thread jack... but who were the winners this year?
                            Craig,

                            Open unlimited:

                            1st place: Shawn_K with his "Notes" speakers, which were a 3-way active loudspeaker.

                            2nd place: N.C. with his "Rendition" speakers, which were a 2 way tower system with detached bass modules.

                            3rd place: dlneubec with his "Proximity" speakers, which were an 8 driver/speaker, active/passive hybrid.

                            Hope this helps,

                            Bill
                            Last edited by 4thtry; 07-18-2014, 08:46 AM. Reason: Correction to ranking mistake
                            Linehopper: http://techtalk.parts-express.com/sh...Esoteric-build
                            Plan-Tanic: http://techtalk.parts-express.com/sh...ght=Plan-Tanic

                            Comment


                            • #15
                              Re: My MWAF 2014 entry: Plan-Tanic

                              An initial crossover of approximately 200Hz @ 12db/octave was cobbled together on two homemade breadboards so that I could begin testing without damaging the RD-40s.

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                              When I tested them on an open 6.5" wide baffle, they were reasonably flat from about 1K to 17K. Below 1K, however, they began to roll off slowly and were down 6dB by 500Hz and 12 dB by 250Hz. Obviously, if I wanted to use a crossover lower than 1K, I needed to make a change. I could try to equalize the driver electronically to compensate for front to back cancellation. But I didn't like that idea because that would have involved a significant increase in power being fed to the planar in the 200 to 500Hz range. Another idea would be to increase the width of the baffle from 6.5" to about 18 inches. But when I tried that idea with temporary baffle extensions, I did not like the way it sounded.

                              So I decided to build a small enclosure 42.5" high by 6.5" wide by 8" deep. In the enclosure, frequency response was reasonably flat from 200 to 17000Hz. Here are a few pics of the boxes that I built. I gave them several coats of high build automotive primer and 1/16"x1/16" shadow lines to hide the glue joints:

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                              Stay tuned. More to follow . . .
                              Linehopper: http://techtalk.parts-express.com/sh...Esoteric-build
                              Plan-Tanic: http://techtalk.parts-express.com/sh...ght=Plan-Tanic

                              Comment

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