Jabra's Bluetooth speaker lineup has just expanded by one with the release of Solemate Max ($400). Following Solemate Mini and an in-between model, this is the big one of the bunch. Although it's not huge, it's heavy, weighing in at over six pounds. The exterior is mostly plastic and metal, with a flexible rubber handle sticking out of one end. On top, there's a circular control panel, with inputs and power controls on one side edge. Speakerphone…