While it's not the sexiest speaker we've ever seen, Jensen's new JiPS-310i ($130) represents an effort by the budget audio company to upgrade a little in class: the three-speaker unit includes two front-facing drivers, a central subwoofer, and 18 Watts of amplification power behind a chrome-accented plastic and fabric chassis. A matching lightweight remote control is included, similarly mixing black plastic and chrome accents, along with a wall adapter…