Bass Driver
  • Heavy duty cast aluminium frame for increased rigidity
  • Low distortion
  • Long driver excursion
  • Suitable for bass reflex or band pass designs
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General Specifications
Nominal Diameter12" / 300 mm
Voice Coil Diameter3.0" / 76 mm
Available Impedances4 Ω/ 8 Ω/ 16 Ω
Power Rating 1 2 *400 W (A.E.S.)
Peak Power (6dB Crest Factor)*1600 W (A.E.S.)
Sensitivity (1W – 1m)*96 dB
Frequency Range45 Hz - 3.5 kHz
Recommended Enclosure Volume25 - 75 Litres
Resonance46 Hz
Voice Coil Winding Depth19 mm / 0.75 "
Magnet Gap Depth9 mm / 0.35 "
Flux Density1.1 Tesla
Magnet MaterialFerrite
Magnet Weight
Voice Coil MaterialCopper
Former MaterialGlass Fibre
Dust Dome MaterialPaper
Suspension MaterialFabric
Cone MaterialPaper
Surround MaterialFabric
Thiele Small Parameters
Fs46 Hz
Re5.88 Ω
Le (@1 kHz)
Le (@10 kHz)0.85 mH
Vas66.82 Litres
Mms68.56 g
Sd530.93 cm²
Cms0.17 mm/N
BL19.22 T/m
Xmax7 mm
Vd0.372 Litres
Ref. Efficiency2.28
EBP143.75 Hz


Dimensions & Mounting
Overall Diameter330 mm
Widths Across Flats320.5 mm
Flange Height10 mm
Depth (Excl. Flange)127 mm
Magnet Diameter170 mm
Chassis Shoulder Diameter282 mm
Outer Bolt Circle4x M6 on 318 mm PCD
Inner Bolt Circle8x M6 on 293 mm PCD


Shipping Information
Nett Weight7.9 Kg / 17.42 lb
Shipping Weight8.8 Kg / 19.40 lb
*2.83V. Half space response measured in a 975 Litre sealed Enclosure. Blue Line = fundamental 45° off-axis.

*1 Power compression is the reduction of sensitivity at the specified power. Higher power ratings do not necessarily give a proportionate increase in SPL therefore the maximum SPL of the driver may significantly exceed that of other manufacturers with high power ratings.

1. AES Standard (45 to 450Hz) Program 400Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 400 Watt preconditioning period.

Please note that frequency response measurements are supplied for comparison purposes only and are not a measure of the low frequency performance which may be achievable in a fully optimised system.
Frequency Response & Impedance
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