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drakmin

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    Beach speaker!

    created by drakmin on 2012.08.04

    Main Section
    Beach / picnic speaker

    -To be used with your cellphone or mp3-player on sunny days.
    -Comes in all colours!
    -Volume control via sound source, only on/off switch on battery box
    ~5w amplifier / 3" fullrange driver
    ~100-20000hz

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    System base structure for adequate air tightness. Technic handle and Technic inner structure to make it stiff. Power button slides directly the on/off switch of PF battery box.

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    Power Functions signal cable and 3" speaker required for this project. I have tested 3" tangband drivers on one liter / 100hz tuned enclosure with 8W amp. Sound quality and output were good.

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    Existing Power Functions battery box modified to house an d-class amplifier. D-class amps have great efficiency: no battery power wasted on heating things!

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    Which colour do you prefer? :)

    See youtube / drakmin for my DIY ghettoblasters. I get lot's of e-mail asking on how to build similar boomboxes from scratch. Based on this I believe there is a demand for this kind of "easy to start with -build yourself" portable speaker.
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