This is one of the first projects that I attempted. The idea was to build a tactile transducer on the cheap that could be mounted to a couch. If your not familiar with a tactile transducer, it is a device designed to transmit vibrations instead of sound. It’s mounted to home theater seating to give you an extra punch during those low frequency booms.
To view more details of this project, check out my project log over on the wiki.