12 E 2.5 CS Altavoz 12" 250W RMS 8 ohm Sica

12 E 2.5 CS Altavoz 12" 250W RMS 8 ohm Sica General Product type Cone driver Brand Sica Reference 12E2.5CS Product code Z007950C Informations Nominal impedance 8 ohm Dimensional category 12.5 inch Frequency coverage type Low Manufacturer sensitivity 97.1 dB Calculated sensitivity 95.9 dB Nominal power handling 250 W Max power handling 500 W Fundamental parameters Sd 490.9 cm² Mms 47.3 gr Cms 214 µm/N Le 0.96 mH Re 6.12 ohm BL 15.85 T.m Small signal parameters Fs 50 Hz Qes 0.36 Qms 8.63 Qts 0.35 Vas 73.3 L Datas Flux density 1.15 T Xmax ±3 mm Calculated Xmax ±4.6667 mm Xvar, Xmech, Xlim ±4.5 mm EBP 139 Hz Fs / Qts 143 Hz Vas * Qts² 8.98 L Efficiency 2.44 % Calculated efficiency 2.45 % Weight ~5.5 kg Dimensions Voice coil diameter 2.5 inch Winding depth 12 mm Gap height 8 mm Outside diameter 318 mm Baffle cutout diameter 285 mm Depth 138.3 mm Front thickness 10.3 mm Depth after front 128 mm Diamètre aimant (mm) 154 mm Shape & Materials Front chape Cylindrical Magnet type Ferrite Basket masterial Acier Winding material Copper Voice coil former Kapton Surround shape Double roll Surround material Cloth Dome material Paper