Bass Driver
  • Discontinued – Special Order / OEM Only
  • Contact info@precision-devices.com for order information
  • Heavy-duty cast aluminium chassis for increased rigidity
  • A B/L in excess of 24 T/m
  • Smooth bass response in a reflex enclosure
  • Suitable for use in small compact full range systems
  • Easy integration with 1″ or 2″ compression drivers
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Download PDF Datasheet
General Specifications
Nominal Diameter12" / 300 mm
Voice Coil Diameter3.0" / 76 mm
Available Impedances4 Ω/ 8 Ω/ 16 Ω
Power Rating 1 2 *400 w (A.E.S.)
Peak Power (6dB Crest Factor)*1600 w (A.E.S.)
Sensitivity (1W – 1m)*98 dB
Frequency Range45 Hz - 3.5 kHz
Recommended Enclosure Volume30 -120 Litres
Resonance59.23 Hz
Voice Coil Winding Depth17 mm / 0.67"
Magnet Gap Depth11 mm / 0.43"
Flux Density1.32 Tesla
Magnet MaterialCeramic
Magnet Weight
Voice Coil MaterialCopper
Former MaterialGlass Fibre
Dust Dome MaterialPaper
Suspension MaterialFabric
Cone MaterialPaper
Surround MaterialFabric
Thiele Small Parameters
Fs59.23 Hz
Re5.91 Ω
Le (@1 kHz)
Le (@10 kHz)0.69 mh
Vas44.03 litres
Mms65.12 g
Sd530.93 cm2
Cms110.89 µm/N
BL24.29 T/m
Xmax4.7 mm
Vd0.259 litres
Ref. Efficiency3.47%
EBP246.79 Hz


Dimensions & Mounting
Overall Diameter330 mm
Widths Across Flats320.5 mm
Flange Height10 mm
Depth (Excl. Flange)118 mm
Magnet Diameter200 mm
Chassis Shoulder Diameter282 mm
Outer Bolt Circle6 * M6 on 318mm PCD
Inner Bolt Circle8 * M6 on 293mm PCD


Shipping Information
Nett Weight9.7 Kg / 21.38 lb.
Shipping Weight10.65 Kg / 23.48 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 (60 to 600 Hz) Program 800 Watts.
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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