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Sub Bass Driver
  • New ergonomic, vented cast aluminium chassis offers improved thermal control
  • A b/l factor in excess of 30 t/m
  • Double silicone suspension system
  • Warm tonal sound
  • Improved motor plating providing a more resilient finish and resistance to corrosion
  • Inside/ outside voice coil windings
Klippel Verifeid
Radial Neo Technology


18" / 457.2 mm

Coil Diameter

5.0" / 127 mm

Power Rating

1000 w (A.E.S.)

Frequency Range

35 Hz - 2 kHz


98 dB


12 mm

Upgraded to a ergonomic and stylish vented chassis design with sleek black motor system plating that offers improved thermal management and up to 10x corrosion resistance in harsh environments. The PD.1852/2 has been fully analysed and verified with our Klippel KA3 analyser system to ensure it meets the very highest standards of performance and reliability.

The premium choice for the most demanding of high performance, high power sub-bass applications. The PD.1852/2 provides powerful and accurate bass frequencies with minimal distortion and power compression.

An optimum choice for top of the range sub bass systems where the ability to take punishment in the most demanding applications is the ultimate selection criterion. Appropriate for applications as diverse as scoop bins, conventional reflex cabinets and horn loaded systems.

£377.66 MRRP Ex. VAT

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General Specifications
TypeSub Bass Driver
Nominal Diameter18" / 457.2 mm
Voice Coil Diameter5.0" / 127 mm
Power Rating 1 2 *1000 w (A.E.S.)
Available Impedance4 Ω/ 8 Ω/ 16 Ω
Sensitivity (1W/ 1m)*98 dB
Frequency Range35 Hz - 2 kHz
Peak Power (6 dB Crest Factor)4000 w (A.E.S.)
Resonance41.85 Hz
Voice Coil Winding Depth29 mm / 1.14"
Recommended Enclosure Volume90 - 220 Litres
Flux Density1.18 Tesla
Magnet MaterialCeramic
Magnet Gap Depth12 mm / 0.47"
Former MaterialGlass Fibre
Dust Dome MaterialPaper
Voice Coil MaterialCopper
Cone MaterialPaper
Suspension MaterialDual silicone
Surround MaterialHGBC
Thiele Small Parameters
Fs41.85 Hz
Re5.18 Ω
Le (@ 1 kHz)0.9 mh
Vas120.38 litres
Mms231.21 g
Sd1164.16 cm2
Cms63 µm/N
BL30.47 T/m
Xmax12 mm
Vd1.397 litres
Ref. Efficiency2.34%
EBP123.08 Hz
Dimensions & Mounting
Overall Diameter474 mm
Width Across Flats459 mm
Flange Height14.5 mm
Depth (Excl. Flange)190 mm
Magnet Diameter280 mm
Chassis Shoulder Diameter414.5 mm
Outer Bolt Circlex6 M8 on 455 mm PCD
Inner Bolt CircleN/A
Shipping Information
Nett Weight25 Kg / 55.11 lb.
Shipping Weight28.3 Kg / 62.39 lb.
* 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 (35 to 350 Hz). Program 1600 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 1000 Watt preconditioning period verified by Klippel LSI measurement.
4. 2.83V. Half space response measured in a 975 Litre sealed enclosure.
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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