A matte mesh black grille with subtle curves and interior accents focuses your eyes on six separate speaker drivers facing forwards, while a mix of glossy and matte black plastics comprises the rest of the chassis. The gloss is S715i’s only obvious aesthetic carry-over from the Pure-Fi family, and even then, the unit’s organic, almost alien backside is substantially matte, with very modest rubber padding to keep it stable on a table. Two more speakers can be seen in plastic-covered compartments on the rear, next to a rubber-sealed set of auxiliary audio and power ports.
The S715i uses two three-inch midrange drivers paired with two half-inch tweeters—Logitech’s first use of dedicated speakers for highs in a portable unit—plus four total two-inch passive bass radiators, two firing forwards and two firing backwards. Looking at S715i directly alongside Pure-Fi Anywhere 2, it’s obvious that Logitech build S715i up from the Pure-Fi hardware, doubling the bass drivers and adding the tweeters to extend the highs and lows.