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Sub Bass Driver
  • Out of Manufacture – No longer Available
  • Vented cast aluminium chassis for improved thermal control of voice coil
  • Aluminium demodulation ring
  • Flat wire 4″ high temperature copper voice coil
  • Triple roll surround straight cone geometry
  • For sub bass applications in bass reflex enclosures


18" / 457.2 mm

Coil Diameter

4.0" / 101.6 mm

Power Rating

800 W (A.E.S.)

Frequency Range

35 Hz - 500 kHz


98 dB


9.7 mm
SKU: PD.184C001.8 Categories: , Tag:

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

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Frequency Response Graph
Impedance GRAPH
General Specifications
TypeSub Bass Driver
Nominal Diameter18" / 457.2 mm
Voice Coil Diameter4.0" / 101.6 mm
Power Rating 1 2 *800 W (A.E.S.)
Available Impedance4 Ω/ 8 Ω/ 16 Ω
Sensitivity (1W/ 1m)*98 dB
Frequency Range35 Hz - 500 kHz
Peak Power (6 dB Crest Factor)3200 W (A.E.S.)
Resonance34 Hz
Voice Coil Winding Depth1.02" / 26.00 mm
Recommended Enclosure Volume90 - 200 Litres
Flux Density1.10 Tesla
Magnet MaterialCeramic
Magnet Gap Depth13.00 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
Fs34 Hz
Re5.2 Ω
Le (@ 1 kHz)2.240 mH
Vas305 Litres
Mms128.00 g
Sd1152 cm2
Cms164.00 µm/N
BL21.00 T/m
Xmax9.7 mm
Vd1.120 Litres
Ref. Efficiency3.55%
EBP103.03 Hz
Dimensions & Mounting
Overall Diameter473.60 mm
Width Across Flats458.73 mm
Flange Height14.50 mm
Depth (Excl. Flange)176.00 mm
Magnet Diameter220 mm
Chassis Shoulder Diameter414.38 mm
Outer Bolt Circlex6 M8 on 456 mm PCD
Inner Bolt CircleN/A
Shipping Information
Nett Weight15.50 Kg / 34.17 lb
Shipping Weight16.00 Kg / 35.27 lb
* 2.83V. Half space response measured in a 975 litre sealed enclosure.

*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.

** Distortion is measured at 10% of the rated power (AES Standard).

1. AES Standard (35 to 350 Hz)

2. AES Recommended Practice.

3. Thiele - Small Parameters follow a 800 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.
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