W 300 4 OHM

Art. No. -

30 cm (12") woofer with air-dried cone and pressure vented pole piece. Can be fitted at front or rear. Excellent value for money coupled with very good power-handling capabilities. Particularly suitable as a replacement for HiFi speakers.

No longer available.

Technical Data

Rated power
120 Watt
Maximum power
180 Watt
Nominal impedance Z
4 Ohm
Frequency response
fu - 2500 Hz
(fu: Lower cut-off frequency depending on cabinet)
Mean sound pressure level
91 dB (1W/1m)
Excursion limit
28 mm
Resonance frequency fs
32 Hz
Magnetic induction
0.95 Tesla
Magnetic flux
1250 µ Weber
Height of front pole-plate
8 mm
Voice coil diameter
5 cm
Height of winding
1.8 cm
Cutout diameter
28 cm
Net weight
2.8 kg
D.C. resistance Rdc
3.8 Ohm
Mechanical Q factor Qms
Electrical Q factor Qes
Total Q factor Qts
Equivalent volume Vas
190 l
Effective piston area Sd
490 cm2
Dynamically moved mass Mms
43 g
Force factor Bxl
8.3 T · m
Inductance of the voice coil L
1.07 mH
Frequency- and impedance response