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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
Type Sub Bass Driver
Available Impedance 4 Ω/ 8 Ω/ 16 Ω
Nominal Diameter 18" / 457.2 mm
Voice Coil Diameter 5.0" / 127 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 35 Hz - 2 kHz
Resonance 41.85 Hz
Voice Coil Winding Depth 29 mm / 1.14"
Recommended Enclosure Volume 90 - 220 Litres
Flux Density 1.18 Tesla
Magnet Material Ceramic
Magnet Gap Depth 12 mm / 0.47"
Former Material Glass Fibre
Dust Dome Material Paper
Voice Coil Material Copper
Cone Material Paper
Suspension Material Dual silicone
Surround Material HGBC
Thiele Small Parameters
Fs 41.85 Hz
Re 5.18 Ω
Qms 11.1
Qes 0.34
Qts 0.33
Le (@ 1 kHz) 0.9 mh
Vas 120.38 litres
Mms 231.21 g
Sd 1164.16 cm2
Cms 63 µm/N
BL 30.47 T/m
Xmax 12 mm
Vd 1.397 litres
Ref. Efficiency 2.34%
EBP 123.08 Hz
Dimensions & Mounting
Overall Diameter 474 mm
Width Across Flats 459 mm
Flange Height 14.5 mm
Depth (Excl. Flange) 190 mm
Magnet Diameter 280 mm
Chassis Shoulder Diameter 414.5 mm
Outer Bolt Circle x6 M8 on 455 mm PCD
Inner Bolt Circle N/A
Shipping Information
Nett Weight 25 Kg / 55.11 lb.
Shipping Weight 28.3 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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