Bass / Mid Range Driver
  • Heavy duty cast aluminium frame for increased rigidity
  • Low distortion
  • Suitable for bass reflex or closed box designs but also works well in horn loaded designs
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General Specifications
Nominal Diameter15" / 380 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)*100 dB
Frequency Range40 Hz - 3.5 kHz
Recommended Enclosure Volume80 - 200 Litres
Resonance39 Hz
Voice Coil Winding Depth17 mm / 0.67 "
Magnet Gap Depth9 mm / 0.35 "
Flux Density1.35 Tesla
Magnet MaterialCeramic
Magnet Weight
Voice Coil MaterialCopper
Former MaterialGlass Fibre
Dust Dome MaterialPaper
Suspension MaterialFabric
Cone MaterialPaper
Surround MaterialFabric
Thiele Small Parameters
Fs39 Hz
Re5.22 Ω
Le (@1 kHz)
Le (@10 kHz)0.40 mH
Vas195 Litres
Mms100 g
Sd907 cm²
Cms0.17 mm/N
BL21.72 T/m
Xmax5.7 mm
Vd0.517 Litres
Ref. Efficiency4.02%
EBP144.44 Hz


Dimensions & Mounting
Overall Diameter410 mm
Widths Across Flats395 mm
Flange Height10 mm
Depth (Excl. Flange)141 mm
Magnet Diameter200 mm
Chassis Shoulder Diameter357 mm
Outer Bolt Circle6x M6 on 395 mm PCD
Inner Bolt Circle8x M6 on 370 mm PCD


Shipping Information
Nett Weight9.5 Kg / 20.94 lb
Shipping Weight10.5 Kg / 23.15 lb
*2.83V. Half space response measured in a 975 Litre sealed Enclosure. Blue Line = fundamental 45° off-axis.

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 (40 to 400Hz) Program 400 Watts.
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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