Spring is coming, and there's nothing more fun than a group ride through town with 10, 100 or 1,000 of your closest friends. I've been on a lot of group rides and if there is 1 thing that really ads to the event its COSTUMES. and if there is a 2nd thing, its MUSIC. having a good sound system really ads to any bike event - both for riders and spectators. I have several friends that consistently bring the music to local events, but its hard going. Most of them have a trailer with a huge DJ speaker, weighty amp, maybe an inverter, and a car battery to power it. Here in San Francisco that means a squat team has to help push them up the hills to keep up with the ride! Today's project uses high efficiency components to make a much more convenient 25 pound (10kg) setup that mounts on any rear rack and gives the 150 pound (60kg) sound trailers a run for their money.
This setup is easy to build and if you buy all new parts will cost about $150. The main cost is the speaker and you may be able to re-use one you have around.
If you need a more complete reference on off-grid party sound systems
, check out my other article.
This article is sponsored by Momentum magazine
. The article appears in Momentum Issue 45
. Here on Instructables i've posted an expanded build section that has tons more inspirational photos annotated with building tips.