BG 30 NG 8 OHM

30 cm (12") woofer with hard cone suspension for keyboard speakers, subwoofers and stage monitors. High efficiency and suitable for sealed and vented systems. High power handling due to magnet vent, capton voice coil carrier and stiff fabric surround.
No longer available.

Used in / Accessories:
MB 212/H

sketch

frequency- and impedance response

Technical Data:
Rated power	150 Watt
Maximum power	250 Watt
Nominal impedance Z	8 Ohm
Frequency response	fu - 5000 Hz
(fu: Lower cut-off frequency depending on cabinet)	.
Mean sound pressure level	95 dB (1W/1m)
Maximum cone displacement	14 mm
Resonance frequency fs	50 Hz
Magnetic induction	1,1 Tesla
Magnetic flux	1400 µ Weber
Height of front pole-plate	8 mm
Voice coil diameter	5 cm
Height of winding	1,4 cm
Cutout diameter	28 cm
Net weight	3 kg
D.C. resistance Rdc	6,5 Ohm
Mechanical Q factor Qms	3,13
Electrical Q factor Qes	0,7
Total Q factor Qts	0,58
Equivalent volume Vas	89 l
Effective piston area Sd	511 cm²
Dynamically moved mass Mms	40 g
Force factor Bxl	10,8 T · m
Inductance of the voice coil L	1,6 mH

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