Size: 4″ Power RMS / Max: 100 / 150 Watts Impedance : 3 Ohm DC resistance: 3.0 Ohm Frequency response: 110 – 7000 Hz Resonance Frequency ( Fs ): 85 Hz Mechanical Q factor: ( Qms ): 4.58 Electrical Q factor: ( Qes ): 0.52 Total Q factor: (Qts ): 0.47 Compliance ( Cms ): 590 ɥm/N Equivalent air volume ( Vas ): 2.5 L Force factor ( B * I ): 4.3 Tm Sensitivity ( SPL ): 91.0 db @ 2.83V/1m┃87.0 db @ 1W/1m Cone area ( Sd ): 55 cm2 Moving mass ( Mms ): 5.9 g Cone material: Ultra high damping crafted paper cone Mechanical resistance ( Rms ): 0.69 kg/s Voice coil diameter: 25 mm Voice coil winding height: 5.5 mm Max. linear excursion ( Xmax ): +/- 1.3 mm Mounting Ø 89.0 mm Mounting depth: 26.5 mm Features: FlexConnect terminal, powerful push-pull neodymium magnet system and FlexMound 100 Compatibility FlexMount100 FlexConnect Inlays WireKits Scope of delivery 2 x Ci7 M100FM-S3 2 x Universal FlexMount100 (with standard 4-point mounting) 2 x FlexConnect inlay A 2 x Crossover connection cable 2 x Mounting material