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Vintage Bluetooth speaker

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  • Vintage Bluetooth speaker


  • #2
    looks great!

    the KAB boards have a few quirks:
    -the wired "on-off" switch is not really to cut power
    -it's wired in reverse (ie, with the switch closed, it goes into standby mode, with the switch open it powers up)
    -if you unplug the AC line input, it will just slowly drain the battery and not shut off

    my guess is that you're running on batteries and your batteries have no charge. where's the green LED?

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    • #3

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      • #4
        It looks fantastic! Love those lenses.
        I would change only one thing: that is, to install a ~4mm plywood baffle behind the grille if possible.

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        • #5
          IIRC there's a quirk where dead batteries wont charge unless the AC power is cut then restored. Not sure which position the on-off switch should be in to restore charging during the power cycle.

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          • #6
            Very, very cool "out of the box" project.

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            • #7
              YES, ANYkind of thin (non-buzzing) baffle will reward you with bass. You're basically running these not only "open baffle", but, actually w/NO baffle. The main result being in nearly total cancellation of any bass frequencies. Even a 10" or 12" sub can't really produce any bass if it's not at least mounted to a baffle board (to stop the "destructive" back wave (from the rear of the cone) from wrapping around the frame to the front of the woofer - cancelling the bass).

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              • #8
                You could experiment with placing a tube around the speaker separating the front and back waves. Not ideal but it should help them function like an H frame.

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                • #9
                  Very cool

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