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Micro bluetooth speaker idea (tiny) - Visatron BF37

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  • #16
    That Bose mini has about 1" drivers and two oval passives in it
    A mains
    The Ventures
    Open Invit8tions
    RSR
    Sound Troopers
    Acorns
    442
    DGBG's
    The Monuments

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    • #17

      Originally posted by Chris Roemer View Post
      posted by Chris Roemer View Post
      I'm using Qes 0.86, Qms 5.11 (Qts 0.736), Vas 0.002cf, Fs 155

      I get YOUR curve in 0.009cf (around 18 cu.in.) tuned to 90 (Fb - actually).
      That's a 20mm port around 440mm ! long. But EYE'm only using a 1/2 port (say, 13mm), which shortens it to 7" (near 175mm).

      I'm SHOOTing for a higher tune in MY 0.014cf box (Fb = 106) to use it as BSC (about +5dBSC) w/a 1/2"id x 3" long port tube (cute).
      I don't judge the diff. between 100Hz and 80 (your box) to be significant - but YMMV..
      I might end up doing two different builds as I do have two pairs of these things. Might be cool to try the above with the small port and one with the passives

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      • #18
        Originally posted by 6thplanet View Post
        That Bose mini has about 1" drivers and two oval passives in it
        Yeah I know, I was using 2 ovals as well but only because I wanted to be that rule of thumb of 2* the SD etc. looking by eye I should be 2-3 times that each driver.

        My issue will be trying to test the weights in the back whilst not finishing it off totally and maintaining a good seal

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        • #19
          I measured them, they are 1.5". Couldn't find the tuning frequency.
          A mains
          The Ventures
          Open Invit8tions
          RSR
          Sound Troopers
          Acorns
          442
          DGBG's
          The Monuments

          Comment


          • #20
            Originally posted by 6thplanet View Post
            I measured them, they are 1.5". Couldn't find the tuning frequency.
            Should still be interesting, would be cool to crack open one of them one day to see what they do differently, but only if it is broken and almost free lol

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            • #21
              On its way.......I found 8mm wood which was the thinnest pine I could source. Why pine? I can sand the crap out of it without sanding through layers and it is cheap/readily available.

              I dislike working at this size, the slightest movement in a drill or cut and you really notice the imperfections. That and trying to cut a stupid oval, that really is my nemesis....let's say after that I started looking at cheap 3d printers

              i would recommend a drill press, I was silly enough to use a forsner bit and a homemade template/router for the oval, can't help but thinks there wouldn't have been tear outs or bit sliding with a press

              This thing is as per image at the start, being 200x65x81 (external dim)
              Attached Files

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              • #22
                Also experimenting with a different finish,to wrap it in this antiskid surface.....

                Many moons ago I bought a OnePlus one which had a sandstone like back, which felt cool. This feels more like a heavy duty skateboard deck and has too much glittery sparkle, not sure how I feel about it to be honest, probably a failed venture. Put it on a piece of scrap I didn't use and dodged in the overlap with a felt pen
                Attached Files

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