Sub Bass Driver
  • Heavy-duty cast aluminium chassis for increased rigidity
  • Power compression only 1.6dB at rated power
  • A B/L in excess of 31 T/m.
  • Double suspension
  • Appropriate for applications as diverse as scoop bins, conventional reflex cabinets and horn loaded systems
  • Increased excursion over an 1850/2
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Download PDF Datasheet
General Specifications
Nominal Diameter24" / 610 mm
Voice Coil Diameter6" / 152 mm
Available Impedances4 Ω/ 8 Ω/ 16 Ω
Power Rating 1 2 *1000 w (A.E.S.)
Peak Power (6dB Crest Factor)*4000 w (A.E.S.)
Sensitivity (1W – 1m)*98 dB
Frequency Range30 Hz - 1 kHz
Recommended Enclosure Volume130 - 400 Litres
Resonance32.37 Hz
Voice Coil Winding Depth30 mm / 1.18"
Magnet Gap Depth15 mm / 0.59"
Flux Density1.1 Tesla
Magnet MaterialCeramic
Magnet Weight
Voice Coil MaterialCopper
Former MaterialGlass Fibre
Dust Dome MaterialPaper
Suspension MaterialDual Fabric
Cone MaterialPaper
Surround MaterialFabric
Thiele Small Parameters
Fs32.37 Hz
Re5.23 Ω
Le (@1 kHz)
Le (@10 kHz)1.75 mh
Vas404.89 litres
Mms424.08 g
Sd2248.01 cm2
Cms57 µm/N
BL36.48 T/m
Xmax10.5 mm
Vd2.36 litres
Ref. Efficiency4.04%
EBP95.20 Hz


Dimensions & Mounting
Overall Diameter632 mm
Widths Across Flats610 mm
Flange Height17 mm
Depth (Excl. Flange)228 mm
Magnet Diameter316 mm
Chassis Shoulder Diameter573 mm
Outer Bolt Circle6 * M8 on 609 mm PCD
Inner Bolt CircleN/A


Shipping Information
Nett Weight36 Kg / 79.37 lb.
Shipping Weight41 Kg / 90.39 lb.
*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 (40 to 400 Hz) Program 2000 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 1000 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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