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Sub Bass Driver
  • Vented cast aluminium chassis for improved thermal control of voice coil
  • Aluminium demodulation ring
  • Flat wire 4” high temperature copper voice coil
  • Dual spider configuration with silicone based damping control
  • Triple roll surround straight cone geometry
  • For sub bass applications in bass reflex enclosures
Klippel Verifeid


18” / 457.2 mm

Coil Diameter

4.0” / 101.6 mm

Power Rating

900 W (A.E.S.)

Frequency Range

30 Hz - 500 Hz


99 dB


9.70 mm

The PD.184C002 is ideally suited to applications where high power handling, long excursion and perfect linearity is required. Ideal for bass reflex enclosure systems. The robust mechanical design and construction makes this unit an ideal choice for fixed or touring applications.


This model is part of our OEM series and will be manufactured to order, please get in touch with us for more information.

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General Specifications
TypeSub Bass Driver
Nominal Diameter18” / 457.2 mm
Voice Coil Diameter4.0” / 101.6 mm
Power Rating 1 2 *900 W (A.E.S.)
Available Impedance4 Ohm / 8 Ohm / 16 Ohm
Sensitivity (1W/ 1m)*99 dB
Frequency Range30 Hz - 500 Hz
Peak Power (6 dB Crest Factor)3600 W (A.E.S.)
Resonance40 Hz
Voice Coil Winding Depth26.00 mm / 1.02”
Recommended Enclosure Volume90 - 200 Litres
Flux Density1.10 Tesla
Magnet MaterialCeramic
Magnet Gap Depth13.0 mm / 0.51”
Former MaterialGlass Fibre
Dust Dome MaterialSolid Paper
Voice Coil MaterialCopper Flat Wire
Cone MaterialFibre loaded paper
Suspension MaterialPoly Cotton
Surround MaterialPoly cotton
Thiele Small Parameters
Fs40 Hz
Re5.2 Ω
Le (@ 1 kHz)1.110 mH
Le (@10 kHz)2.31 mH
Vas268 Litres
Mms112.00 g
Sd1152 cm2
Cms141.00 μm/N
BL21.00 T/m
Xmax9.70 mm
Vd1.120 Litres
Ref. Efficiency3.55%
EBP111.11 Hz
Dimensions & Mounting
Overall Diameter474 mm
Width Across Flats459 mm
Flange Height14.5 mm
Depth (Excl. Flange)176 mm
Magnet Diameter220 mm
Chassis Shoulder Diameter415 mm
Outer Bolt Circlex6 M8 on 456 mm PCD
Shipping Information
Nett Weight15.50 kg / 34.17 lb
Shipping Weight16.00 kg / 35.27 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. ** Distortion is measured at 10% of the rated power (A.E.S. standard).

1. A.E.S. Standard (30 to 350 Hz).
2. A.E.S. Recommended Practice.
3. Thiele - Small Parameters follow a 800 Watt preconditioning period verified by Klippel LSI measurement.
4. 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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