Description HELIX COMPOSE. The perfect speaker for any composition. Born out of the increasingly demanding challenges of modern automobile technology and the HELIX-typical pursuit of intelligent solutions, we made the progressive redesign of proven universal speaker systems our mission. The result: our innovative HELIX COMPOSE platform that, according to the motto "developed inside the vehicle, for the vehicle", combines classic universal speakers with the advantages of vehicle-specific systems. Innovative materials and the latest technologies paired with smart, practical engineering - the best of both worlds in harmony: high efficiency, fantastic sound quality and enormous dynamics that fit in any vehicle. HELIX COMPOSE – universal speakers evolved. Product parameters Size: 100mm | 4" Driver Power | Watts RMS: 60 Voice Coil x Impedance: 1 x 3Ω Type: Component | 2-Way Sensitivity 2.83V/1m | dB: 88 Installation Depth | mm: 49 Features 2-way speaker kit which combines high efficiency with exceptional sound performance 3 Ohms technology for maximized power output of the amplifier Compact design for trouble-free installation even in cramped conditions Technical Data Power handling RMS / Max. P 60 / 90 Watts Frequency response 100 Hz - 22,000 Hz Impedance Z 3 Ω Sensitivity SPL 88 dB @ 2.83V / 1m84 dB @ 1W / 1m Outer diameter ø Tweeter: 32.0 mm / 1.26”Midrange: 99.2 mm / 3.91” Installation diameter ø Tweeter: 32.0 mm / 1.26”Midrange: 89.5 mm / 3.52” Installation depth Tweeter: 9.8 mm / 0.39”Midrange: 48.9 mm / 1.93” Dimensions crossover 103.3 x 50.4 x 25.0 mm /4.07 x 1.98 x 0.98” Midrange Impedance Z 3 Ω DC resistance Re 3.1 Ω Resonance frequency Fs 116 Hz Mechanical Q factor Qms 5.05 Electrical Q factor Qes 0.97 Total Q factor Qts 0.81 Compliance Cms 250 μm/N Equivalent air volume Vas 0.9 L Force factor B*l 4.2 Tm Cone area Sd 50 cm2 Moving mass Mms 7.5 g Mechanical resistance Rms 1.09 kg/s Voice coil diameter ø 25 mm Voice coil winding height 8.9 mm Max. linear excursion Xmax +/- 2.5 mm Tweeter Impedance Z 4 Ω Resonance frequency Fs 2000 Hz Voice coil diameter ø 20 mm Features Tweeter Ultra compact, silk dome, neodymium magnet and FlexMount20 Midrange Injected polypropylene cone Crossover Tweeter: 12 dB highpass, protection and level adjustment