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Beach speaker!
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Beach speaker! is a project on LEGO CUUSOO created by drakmin on August 4th, 2012.

This message was written by the creator of the project. Do not modify the message in any way.

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 BeachSpeaker1

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. BeachSpeaker2

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. BeachSpeaker3

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! BeachSpeaker4

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.