Wednesday March 2016 at the Growlery in San Francisco, USA
In this short evening workshop we will weave electromagnets on circular looms strung on paper cups. We will weave a spiral of, that is spaced out (isolated) by the addition of a non-conductive thread. These spirals simultaneously make up the electromagnets and membranes of the speakers. Playing an amplified sound source through them, and holding a strong neodymium magnet close to their center will cause them to vibrate and play back sound.
Instructable >> http://www.instructables.com/id/Woven-Paper-Cup-Speaker/