W 200 S 4 OHM Art. No. 9029 20 cm (8") HiFi woofer with strong drive, extended rear pole plate and 35 mm voice-coil for high power handling. Elastic rubber surround and coated paper cone. Recommended cabinets: Volume/Principle BR-Channel fb fc/QTC 15 l/closed  -  - 70 Hz/0,7 20 l/bass reflex BR 19.24 (length 14 cm) 45 Hz  - 30 l/bass reflex BR 19.24 (length 11 cm) 39 Hz  - 50 l/bass reflex BR 15.34 (length 13 cm) 33 Hz  -   Used in / Accessories: SUB W-20.39
sketch frequency- and impedance response	Technical Data: Rated power 75 W Maximum power 115 W Nominal impedance Z 4 Ohm Frequency response fu–6000 Hz (fu: Lower cut-off frequency depending on cabinet) . Mean sound pressure level 88 dB (1 W/1 m) Opening angle (-6 dB) 48°/4000 Hz Excursion limit +/−10 mm Resonance frequency fs 29 Hz Magnetic induction 1,1 T Magnetic flux 600 µWb Height of front pole-plate 5 mm Voice coil diameter 35 mm Height of winding 12 mm Cutout diameter 184 mm Net weight 1,5 kg D.C. resistance Rdc 3,4 Ohm Mechanical Q factor Qms 3,99 Electrical Q factor Qes 0,38 Total Q factor Qts 0,35 Equivalent volume Vas 65 l Effective piston area Sd 214 cm² Dynamically moved mass Mms 28 g Force factor Bxl 7,7 Tm Inductance of the voice coil L 1,5 mH Similar Products AL 200 8 OHM GF 200 2 x 4 OHM TIW 200 XS 8 OHM W 200 4 OHM W 200 8 OHM W 200 S 8 OHM WS 20 E 4 OHM WS 20 E 8 OHM
directivity pattern