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Sub Bass Driver
(1 customer review)
  • Heavy-duty cast aluminium chassis for increased rigidity
  • Power compression only 1.7dB at rated power
  • A B/L in excess of 30 T/m
  • Double suspension
  • Appropriate for applications as diverse as scoop bins, conventional reflex cabinets and horn loaded systems
  • Silicone suspension system
  • Increased excursion over an 1850/2
  • Delivers fine and balanced tonal character, but equally can deliver aggressive bass in the lower bandwidths


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
SKU: PD.1852.8 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 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) 178 mm
Magnet Diameter 280 mm
Chassis Shoulder Diameter 414.5 mm
Outer Bolt Circle 6 * M8 on 455mm PCD
Inner Bolt Circle N/A
Shipping Information
Nett Weight 25 Kg / 55.11 lb.
Shipping Weight 28.3 Kg / 62.39 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 (35 to 350 Hz) Program 1600 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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1 review for PD.1852

  1. Dilip Jadhav

    Precision devices pd1852 speaker the word is the no 1 speaker

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