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Insane Halfinator build with DSP, bluetooth and Lithium battery

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  • Insane Halfinator build with DSP, bluetooth and Lithium battery

    The last few months my roommate and I have been planning on building the ultimate outdoor speaker. We went with the Halfinator design by Saturnus, but went all out with the electronics. This includes:
    -Digital Signal Processor
    -High power class-D amplifier
    -The premium tweeters (PHT407N)
    -High power 18.5V lithium battery
    -Long range V4.2 Bluetooth
    -3D printed input panel
    -Swappable battery
    -Birch plywood construction with routed slots for easy and strong construction
    -All black tuffcab finish with a crazy color custom aluminium grill with foam insert.

    Now that I write it out, I realize how insane this build really is. We are quite far in the process, but not finished. The build log will be posted bit by bit, so stay tuned.

  • #2
    Begin construction: wood is cut and first slots are routed

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    Festool making the job easy

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    First few panels done

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    Halfway there

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    Woofer testfit

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    Next up: routing, drilling and assembly

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    • #3
      Wondering how many watts (mA) the DSP requires. The Boominator / Halfinator was designed for super efficiency with a small digital amp.

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      • #4
        Originally posted by Millstonemike View Post
        Wondering how many watts (mA) the DSP requires. The Boominator / Halfinator was designed for super efficiency with a small digital amp.
        The total power consumption of all electronics combined is below 50mA on normal listening volume, which translates to 50+ hour playtime with the battery we used (5S 3Ah lithium)
        More info on this will follow in the electronics part of the build log.

        Here is a sneak preview of all (yes all) electronics that are used in this build:
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        • #5

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          • #6
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            • #7
              Is the electronics board your design or is it a commercially available board?

              Thanks....
              "Everything is nothing without a high sound quality." (Sure Electronics)

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              • #8
                ernperkins Both. It is my design but it should be commercially available soon (<2 months)

                Painting...

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                3D printed input panel with all connectors and battery compartiment

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