- Looks can be deceiving. Despite its slim dimensions, Sonetto III has the commanding presence of a much larger speaker, thanks to advanced technologies and design solutions. Sonetto III completes the floorstanding loudspeakers range of the collection. - 3-way floorstanding loudspeaker system. Vented box design. - Tweeter: High Definition DAD™ driver. DKM dome diaphragm, 29mm - Midrange: Custom diaphragm made with cellulose pulp and other natural fibers, 150mm - Woofer: Ultra-free compression basket, aluminum cone for maximum speed, 2x 150mm cone drivers - CROSS-OVER: 220Hz - 3.250Hz - FREQUENCY RESPONSE: 42 Hz – 25.000 Hz - SENSITIVITY: 89 dB SPL (2.83 V/1m) - NOMINAL IMPENDANCE: 4 ohm - SUGGESTED AMPLIFIER POWER OUTPUT: 50W – 250W, without clipping