McDonald's Canada has turned its cardboard drink trays into portable speakers for smartphones as part of a limited release at a beach on Toronto.
Through a partnership with the University of Waterloo’s Audio Research Group and industry design company Stacklab, the McDonald’s Boombox was created with no electronics involved.
Instead, it takes the sound coming from a smartphone’s speakers and increases them by amping up the sound pressure levels via the cardboard speaker enclosure.
The boxes are only available for a limited time at Toronto’s Woodbine Beach, as a way of 'bumping up the volume' while enjoying a burger.
