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

 

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 8,9 Tm
Inductance of the voice coil L 0,9 mH
Show all data

sketch

frequency- and impedance response