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Bass Driver
  • Heavy duty cast aluminium frame for increased rigidity
  • Low distortion
  • Long driver excursion
  • Suitable for bass reflex or band pass designs


12" / 300 mm

Coil Diameter

3.0" / 76 mm

Power Rating

400 W (A.E.S.)

Frequency Range

45 Hz - 3.5 kHz


96 dB


7 mm
SKU: PD.123C01.8 Category:

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General Specifications
Type Bass Driver
Nominal Diameter 12" / 300 mm
Voice Coil Diameter 3.0" / 76 mm
Power Rating 1 2 * 400 W (A.E.S.)
Available Impedance 4 Ω/ 8 Ω/ 16 Ω
Sensitivity (1W/ 1m)* 96 dB
Frequency Range 45 Hz - 3.5 kHz
Peak Power (6 dB Crest Factor) 1600 W (A.E.S.)
Resonance 46 Hz
Voice Coil Winding Depth 19 mm / 0.75 "
Recommended Enclosure Volume 25 - 75 Litres
Flux Density 1.1 Tesla
Magnet Material Ferrite
Magnet Gap Depth 9 mm / 0.35 "
Former Material Glass Fibre
Dust Dome Material Paper
Voice Coil Material Copper
Cone Material Paper
Suspension Material Fabric
Surround Material Fabric
Thiele Small Parameters
Fs 46 Hz
Re 5.88 Ω
Qms 16.18
Qes 0.32
Qts 0.31
Le (@ 1 kHz) 0.85 mH
Vas 66.82 Litres
Mms 68.56 g
Sd 530.93 cm²
Cms 0.17 mm/N
BL 19.22 T/m
Xmax 7 mm
Vd 0.372 Litres
Ref. Efficiency 2.28
EBP 143.75 Hz
Dimensions & Mounting
Overall Diameter 330 mm
Width Across Flats 320.5 mm
Flange Height 10 mm
Depth (Excl. Flange) 127 mm
Magnet Diameter 170 mm
Chassis Shoulder Diameter 282 mm
Outer Bolt Circle 4x M6 on 318 mm PCD
Inner Bolt Circle 8x M6 on 293 mm PCD
Shipping Information
Nett Weight 7.9 Kg / 17.42 lb
Shipping Weight 8.8 Kg / 19.40 lb
*2.83V. Half space response measured in a 975 Litre sealed Enclosure. Blue Line = fundamental 45° off-axis.

*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 (45 to 450Hz) Program 400Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 400 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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