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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


24" / 610 mm

Coil Diameter

6" / 152 mm

Power Rating

1000 w (A.E.S.)

Frequency Range

30 Hz - 1 kHz


98 dB


10.5 mm
SKU: PD.2450.8 Category:

Sorry, this product is out of manufacture and no longer available.

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General Specifications
Type Sub Bass Driver
Available Impedance 4 Ω/ 8 Ω/ 16 Ω
Nominal Diameter 24" / 610 mm
Voice Coil Diameter 6" / 152 mm
Peak Power (6 dB Crest Factor) * 4000 w (A.E.S.)
Power Rating 1 2 * 1000 w (A.E.S.)
Sensitivity (1W/ 1m) * 98 dB
Frequency Range 30 Hz - 1 kHz
Resonance 32.37 Hz
Voice Coil Winding Depth 30 mm / 1.18"
Recommended Enclosure Volume 130 - 400 Litres
Flux Density 1.1 Tesla
Magnet Material Ceramic
Magnet Gap Depth 15 mm / 0.59"
Former Material Glass Fibre
Dust Dome Material Paper
Voice Coil Material Copper
Cone Material Paper
Suspension Material Dual Fabric
Surround Material Fabric
Thiele Small Parameters
Fs 32.37 Hz
Re 5.23 Ω
Qms 13.03
Qes 0.34
Qts 0.33
Le (@ 1 kHz) 1.75 mh
Vas 404.89 litres
Mms 424.08 g
Sd 2248.01 cm2
Cms 57 µm/N
BL 36.48 T/m
Xmax 10.5 mm
Vd 2.36 litres
Ref. Efficiency 4.04%
EBP 95.20 Hz
Dimensions & Mounting
Overall Diameter 632 mm
Width Across Flats 610 mm
Flange Height 17 mm
Depth (Excl. Flange) 228 mm
Magnet Diameter 316 mm
Chassis Shoulder Diameter 573 mm
Outer Bolt Circle 6 * M8 on 609 mm PCD
Inner Bolt Circle N/A
Shipping Information
Nett Weight 36 Kg / 79.37 lb.
Shipping Weight 41 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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