BZ 300 4 OHM

30 cm (12") subwoofer featuring a coated cone and a solidly constructed metal basket. To provide long cone strokes and high power handling, the driver is equipped with an extended rear pole-plate. Due to the 50 mm voice coil the BZ 300 is suited for high power operation. Suitable for free-air-operation as well as driver for band-pass and vented enclosures.

No longer available.

Technical Data

Rated power
350 Watt
Maximum power
450 Watt
Nominal impedance Z
4 Ohm
Frequency response
fu - 4000 Hz
(fu: Lower cut-off frequency depending on cabinet)
Mean sound pressure level
92 dB (1W/1m)
Excursion limit
20 mm
Resonance frequency fs
36 Hz
Height of front pole-plate
8 mm
Voice coil diameter
5 cm
Height of winding
1.4 cm
Cutout diameter
28 cm
Net weight
4.5 kg
D.C. resistance Rdc
3.6 Ohm
Mechanical Q factor Qms
Electrical Q factor Qes
Total Q factor Qts
Equivalent volume Vas
129 l
Effective piston area Sd
510 cm2
Dynamically moved mass Mms
53.3 g
Force factor Bxl
9.26 T · m
Inductance of the voice coil L
0.93 mH
Frequency- and impedance response