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 2,77
Electrical Q factor Qes 0,56
Total Q factor Qts 0,46
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
Show all data

sketch

frequency- and impedance response