Summary: Type: component speakers; Size: 10 cm (4 in.); The number of bands: 2; Sensitivity: 87 dB (W/m); Impedance: 4 Ohm; Dimensions: 25 mm; Cone material: silk; Dimensions: 100 mm; Cone material: impregnated paper; Full q (Qts): 0.51; Additional information: system for BMW, suitable for a single installation and setup complete with speakers un ...