Sub Bass Driver
  • Discontinued – Special Order / OEM Only
  • Contact info@precision-devices.com 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
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Download PDF Datasheet
General Specifications
Nominal Diameter12" / 300 mm
Voice Coil Diameter4.0" / 101.6 mm
Available Impedances4 Ω/ 8 Ω/ 16 Ω
Power Rating 1 2 *600 w (A.E.S.)
Peak Power (6dB Crest Factor)*2400 w (A.E.S.)
Sensitivity (1W – 1m)*95 dB
Frequency Range40 Hz - 2 kHz
Recommended Enclosure Volume25 - 100 Litres
Resonance49.91 Hz
Voice Coil Winding Depth22 mm / 0.87"
Magnet Gap Depth8 mm / 0.31"
Flux Density1.13 Tesla
Magnet MaterialNeodymium
Magnet Weight
Voice Coil MaterialCopper
Former MaterialGlass Fibre
Dust Dome MaterialPaper
Suspension MaterialDual Fabric
Cone MaterialPaper
Surround MaterialFabric
Thiele Small Parameters
Fs49.91 Hz
Re5.36 Ω
Le (@1 kHz)
Le (@10 kHz)0.9 mh
Vas45.81 litres
Mms87.95 g
Sd530.93 cm2
Cms115.67 µm/N
BL21 T/m
Xmax9.2 mm
Vd1.1 litres
Ref. Efficiency1.13%
EBP151.24 Hz


Dimensions & Mounting
Overall Diameter330 mm
Widths Across Flats320.5 mm
Flange Height10 mm
Depth (Excl. Flange)131 mm
Magnet Diameter283 mm
Chassis Shoulder Diameter282 mm
Outer Bolt Circle6 * M6 on 318mm PCD
Inner Bolt Circle8 * M6 on 293mm PCD


Shipping Information
Nett Weight6.75 Kg / 14.88 lb.
Shipping Weight7.5 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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