Inspired by MartinLogan's high-end electrostatic loudspeakers, the Motion Series was created to provide stunning sound for your ultimate-performance home theater or stereo. MartinLogan's dedicated in-house engineers carefully crafted the Motion Series to create an extremely affordable and compact product line that seamlessly blends their exquisite Folded Motion transducers with powerful, compact bass technology. The result is a smooth, refined sound with stunning dynamic range and jaw-dropping clarity. Focusing o Type: Floorstanding Speakers Driver Units: High Frequency Driver: 1 x 1.4" (2.6 x 3.6cm) Folded Motion Transducer with 5.25 x 1.75" (13.3 x 4.4cm) diaphragm. Mid/Low Frequency Drivers: Two 5.25" (16.5cm) paper cone. Power Rating: 100 watts Frequency Response: 65–25,000 Hz ± 3dB Nominal Impedance: 4 Ohms. Compatible with 4, 6, or 8 Ohm rated amplifiers. Sensitivity: 90 dB/2.83 volts/meter Remote Control: No Dimensions & Weight: 35.1" x 9.9" x 10" (89.1cm x 25.1cm x 25.4cm) / 22 lbs. (10kg)