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PD.123C01 - Bass Driver

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


The PD.123C01 is the perfect choice for extended low-frequency response and high SPL applications from a nominal 12-inch driver. 

Ideal for bandpass applications and extended throw designs. The 123C01 also excels in compact two-way cabinets offering extended low frequency reproduction and smooth midrange. Easy to integrate with small format HF drivers utilising the woofers usable frequency range of 45Hz to 3.5kHz.


*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.

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Nominal Diameter12" / 300 mm
Nominal Impedance8 Ω
Available Impedance4 /8 /16 Ω
Voice Coil Diameter3.0" / 76 mm
Power Rating400 W (A.E.S.)
Peak Power (6dB Crest Factor)1600 W (A.E.S.)
Sensitivity (1w / 1m)96 dB
Frequency Range45 Hz - 3.5 kHz
Recommended Enclosure Volume25 - 75 Litres
Resonance46 Hz
Voice Coil Winding Depth19 mm / 0.75 "
Magnet Gap Depth9 mm / 0.35 "
Flux Density1.1 Tesla
Magnet MaterialFerrite
Voice Coil MaterialCopper
Former MaterialGlass Fibre
Dust Dome MaterialPaper
Suspension MaterialFabric
Cone Surround MaterialPaper / Fabric
Fs46 Hz
Re5.88 Ω
Le0.85 mH
L21.78 mH
R214.75 Ω
Vas66.82 Litres
Mms68.56 g
Sd530.93 cm²
Cms0.17 mm/N
Bl19.22 T/m
Xmax7 mm
Xlim (+/-)22 mm
Vd 0.372 Litres
Reference Efficiency2.28
Overall Diameter330 mm
Width Across Flat320.5 mm
Flange Height10 mm
Depth127 mm
Magnet Diameter170 mm
Chassis Shoulder Diameter282 mm
Outer Bolt Circle4x M6 on 318 mm PCD
Inner Bolt Circle8x M6 on 293 mm PCD
Nett Weight7.9 Kg / 17.42 lb
Shipping Weight8.8 Kg / 19.40 lb
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