That group, of course, is budget-conscious consumers—people unaccustomed to finding eye-catching, sonically competent speakers below the $100 or even $150 price points—and they’ll be thrilled by Vitruvian and Butterfly. Coby doesn’t make a big deal about the specs of either of these systems, but they both include two 1-inch tweeters and two 2.75” full-range drivers that are hidden behind fabric grilles within largely…