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Sub Bass Driver
  • Discontinued – Special Order / OEM Only
  • Contact for order information
  • Heavy-duty cast aluminium chassis for increased rigidity
  • Smooth extended low-frequency response
  • Suitable for bass reflex and bandpass applications
  • Easy integration with 2″ compression drivers


12" / 300 mm

Coil Diameter

4.0" / 101.6 mm

Power Rating

600 w (A.E.S.)

Frequency Range

40 Hz - 2 kHz


95 dB


9.2 mm
SKU: PDN.12SB40.8 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 12" / 300 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) * 95 dB
Frequency Range 40 Hz - 2 kHz
Resonance 49.91 Hz
Voice Coil Winding Depth 22 mm / 0.87"
Recommended Enclosure Volume 25 - 100 Litres
Flux Density 1.13 Tesla
Magnet Material Neodymium
Magnet Gap Depth 8 mm / 0.31"
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 49.91 Hz
Re 5.36 Ω
Qms 8.82
Qes 0.33
Qts 0.32
Le (@ 1 kHz) 0.9 mh
Vas 45.81 litres
Mms 87.95 g
Sd 530.93 cm2
Cms 115.67 µm/N
BL 21 T/m
Xmax 9.2 mm
Vd 1.1 litres
Ref. Efficiency 1.13%
EBP 151.24 Hz
Dimensions & Mounting
Overall Diameter 330 mm
Width Across Flats 320.5 mm
Flange Height 10 mm
Depth (Excl. Flange) 131 mm
Magnet Diameter 283 mm
Chassis Shoulder Diameter 282 mm
Outer Bolt Circle 6 * M6 on 318mm PCD
Inner Bolt Circle 8 * M6 on 293mm PCD
Shipping Information
Nett Weight 6.75 Kg / 14.88 lb.
Shipping Weight 7.5 Kg / 16.53 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 (50 to 500 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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