With ever increasing applications for speakers (new game, computer, & theater systems) as well as new standards (5.1, 6.1, Dolby, THX, etc.) audio makers are constantly aiming at a moving target. The latest two releases from Logitech (Z-640 & Z-680) aim to fill all the home needs at two very competitive price points – and do very nicely. But after last year’s award winning Z-560 series that may come as no surprise. Read on to see how the Z-640 compliments Logitech’s speaker line-up…