OnBeat continues and actually improves upon a new design theme JBL introduced last year: the “Weave.” Weave moves past the company’s earliest iPod and iPhone speakers, which used soft curves with alien-inspired shapes—saucers, alien pods, and the like—by replacing the alien elements with the look of layered fabrics, molded instead from attractive mixes of metal and plastic. On Stage IV and On Stage Micro III debuted the…