Panasonic has unveiled what it claims to be the world's thinnest speaker, cutting its previous best effort (an enormous 2.5 millimeters thick) by a full 40%, with this room-shaker sliding in at a far more manageable 1.5 millimeters (or 0.059 inches) . Rest assured, despite being sliced nearly in half, according to Panasonic, the speaker will boast the same great sound quality you've come to expect from a speaker the size of a postage stamp. You'll have to wait a little while to sample the quality yourself though, with full production slated to start in May 2007, and availability dependent on the cellphone makers that decide to pick it up.
Panasonic claims world's thinnest speaker - Engadget