Rated power20 W Maximum power 30 W Nominal impedance Z 4 Ohm Frequency response 100–22000 Hz Mean sound pressure level 86 dB (1 W/1 m) Resonance frequency fs 133 Hz Height of front pole-plate 3 mm Voice coil diameter 14 mm Cutout diameter 94 mm Net weight 200 g D. C. resistance Rdc 3,7 Ohm Mechanical Q factor Qms 6,5 Electrical Q factor Qes 1,99 Total Q factor Qts 1,52 Equivalent volume Vas 2,2 l Effective piston area Sd 52 cm2 Dynamically moved mass Mms 2,4 g Force factor Bxl 1,7 T m Inductance of the voice coil L 0,35 mH Heat resistance −25 ... 70