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Sub Bass Driver
  • Discontinued – Special Order / OEM Only
  • Contact for order information
  • Heavy-duty cast aluminium Chassis for increased rigidity
  • Easy integration with 1″ or 2″ compression drivers
  • Complimented by PDN.10/12MH25
  • Effective transducer in a variety of versatile applications
  • A B/L in excess of 28 T/m
  • Also suitable for horn loaded/bandpass sub bass designs
  • Lightweight neodymium magnet assembly


18" / 457.2 mm

Coil Diameter

4.0" / 101.6 mm

Power Rating

600 w (A.E.S.)

Frequency Range

40 Hz - 3.5 kHz


98 dB


6 mm
SKU: PDN.18SB40.8 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 4.0" / 101.6 mm
Peak Power (6 dB Crest Factor) * 2400 w (A.E.S.)
Power Rating 1 2 * 600 w (A.E.S.)
Sensitivity (1W/ 1m) * 98 dB
Frequency Range 40 Hz - 3.5 kHz
Resonance 37.28 Hz
Voice Coil Winding Depth 19 mm / 0.75"
Recommended Enclosure Volume 100 - 350 Litres
Flux Density 1.2 Tesla
Magnet Material Neodymium
Magnet Gap Depth 11 mm / 0.43"
Former Material Glass Fibre
Dust Dome Material Paper
Voice Coil Material Copper
Cone Material Paper
Suspension Material Dual Fabric
Surround Material Fabric
Thiele Small Parameters
Fs 37.28 Hz
Re 5.62 Ω
Qms 19.25
Qes 0.26
Qts 0.26
Le (@ 1 kHz) 1.36 mh
Vas 211.29 litres
Mms 164.25 g
Sd 1164.16 cm2
Cms 111 µm/N
BL 28.59 T/m
Xmax 6 mm
Vd 0.68 litres
Ref. Efficiency 3.29%
EBP 143.38 Hz
Dimensions & Mounting
Overall Diameter 474 mm
Width Across Flats 458 mm
Flange Height 13 mm
Depth (Excl. Flange) 172 mm
Magnet Diameter 182 mm
Chassis Shoulder Diameter 415 mm
Outer Bolt Circle 6 * M8 on 456mm PCD
Inner Bolt Circle N/A
Shipping Information
Nett Weight 8.5 Kg / 18.74 lb.
Shipping Weight 9.75 Kg / 21.49 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 (40 to 400 Hz) Program 1200 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 600 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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