W 250 S 4 OHM Art. No. 9034 25 cm (10") HiFi woofer with strong drive, extended rear pole plate and 38 mm voice-coil for high power handling. Elastic rubber surround, coated paper cone and magnet vent. Recommended cabinets: Volume/Principle BR-Channel fb 50 l/bass reflex 2 x BR 15.34 43 Hz 70 l/bass reflex 2 x BR 15.34 39 Hz 1 x BR 25.50 (length 7 cm) 100 l/bass reflex 2 x BR 15.34 (length 10 cm) 34 Hz   Used in / Accessories: KM 140

sketch frequency- and impedance response

Technical Data: Rated power 100 W Maximum power 150 W Nominal impedance Z 4 Ohm Frequency response fu–5500 Hz (fu: Lower cut-off frequency depending on cabinet) . Mean sound pressure level 90 dB (1 W/1 m) Excursion limit +/−7 mm Resonance frequency fs 33 Hz Magnetic induction 1,0 T Magnetic flux 835 µWb Height of front pole-plate 7 mm Voice coil diameter 38 mm Height of winding 17 mm Cutout diameter 233 mm Net weight 3 kg D.C. resistance Rdc 3,6 Ohm Mechanical Q factor Qms 2,01 Electrical Q factor Qes 0,43 Total Q factor Qts 0,35 Equivalent volume Vas 135 l Effective piston area Sd 346 cm² Dynamically moved mass Mms 32 g Force factor Bxl 8,94 Tm Inductance of the voice coil L 0,93 mH Similar Products TIW 250 XS 8 OHM W 250 8 OHM W 250 S 8 OHM WS 25 E 4 OHM WS 25 E 8 OHM