The JBL S3900 is a floorstanding 3-way high performance loudspeaker, leveraging professional-grade components and taking design cues from the legendary K2® S9900. Dual 10-inch (250mm) pulp-fiber cone woofers deliver deep lows, a 1.75-inch (45mm) pure-titanium driver delivers mids and highs with lifelike dynamics and startling realism and a 0.75-inch (19mm) ultrahigh-frequency transducer reproduces frequencies with extreme clarity. From your lows to highs, you won’t miss a sound. Hear it as the pros hear it.