Fane Colossus 12MB Fane Colossus 12MB
TFane Colossus 12MB TFane Colossus 12MB


Mid Bass Driver

Data Sheet
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  • 1000 W Program Power
  • High SPL output, 98 dB (1W / 1m).
  • Optimised non-inductive motor system efficiently controls magnetic flux and reduces third-harmonic and intermodulation distortion.
  • Undistorted low frequencies at high output levels.
  • Fast and dynamic driver producing punchy bass.
  • Extended frequency range up to 3.5 kHz.
  • Aluminium demodulation and Copper shorting rings.
  • UK manufactured cone with optimised pulp offering increased strength, durability and performance.
  • Performs best in ported enclosures of 25-80 Litres.
  • 3-inch Inside/outside windings aluminium voice coil.

The Colossus 12MB is intended for use as a very high-output mid bass driver in two-way ported enclosures and also as a bass driver in multi way systems. The unit features a 3 inch 'sandwich' inside and outside windings voice coil driven by a non-inductive motor system which dramatically reduces third-harmonic and intermodulation distortion. The cone membrane, manufactured from polycellulose, is much stronger and more durable than conventional paper pulp alternatives. This allows the driver to combine high-sensitivity with the structural integrity required to produce undistorted low frequencies at high output levels. The mechanical and electrical properties of the unit have been carefully optimised to allow extended low frequency output up to its rated power handling of 500 Watts (A.E.S) continuous, with peak power handling in excess of 2000 Watts. The driver exhibits an average sensitivity of 98 dB and is best used in ported enclosures of 25 to 80 Litres.


  • Please enquire about alternative impedances.
  • A.E.S. power handling test. Pink noise bandpass filtered at 12 dB per octave with cutoff frequencies of 50 Hz and 500 Hz. Driver mounted in free air, test signal applied at rated power for two hours.
  • Please note that the frequency response measurements are supplied for comparison only and are not a measure of the low frequency performance which may be achieved in a fully optimised system.
Electro Acoustic Specifications
Nominal Chassis Diameter 12" / 304.8 mm
Impedance 8 Ω
Power Handling 500 W (A.E.S.)
Peak Power (6dB Crest Factor) 2000 W (A.E.S.)
Usable Frequency Range (-6dB) 40 Hz - 3.5 kHz
Sensitivity (1W - 1m) Wideband 98 dB
Moving Mass (inc. Air Load) 59 grams
Minimum Impedance (Zmin) 7.5 Ω
Effective Piston Diameter 10.24" / 260.09 mm
Magnet Weight 93 oz
Magnetic Gap Depth 0.35" / 9 mm
Flux Density 1.16 Tesla
Coil Winding Height 0.70" / 18 mm
Voice Coil Diameter 3.0" / 76.2 mm
Speaker Type Mid Bass Driver
Speaker Series The Professional Series
Program Power 1000 W (A.E.S.)
Sensitivity (1W / 1m) Working band
Thiele Small Parameters (TSPs)
FS 55 Hz
Re 5.5 Ω
QMS 2.05
QES 0.333
QTS 0.286
Vas 56 Litres
Vd 0.29 Litres
CMS 0.142 mm/N
BL 18.3 T/m
MMS 59 grams
Xmax 5.5 mm
Sd 530 cm2
Efficiency 2.71%
Le 1.56 mH
EBP 165.17 Hz
Materials of Construction
Coil Former Material Glass Fibre
Voice Coil Material Aluminium - Inside / Outside Windings
Magnet Material Ferrite
Chassis Material Die-cast Aluminium
Cone Material Curvilinear Polycellulose
Surround / Edge Termination Polyvinyl Damped Multi Roll. Poly Cotton
Dust Dome Material Solid Paper
Connectors Push-button Spring Terminals
Polarity Positive voltage at red terminal causes forward motion of cone
Mounting / Shipping Information
Overall Diameter 13" / 330.2 mm
Width Across Flats 12.19" / 309.52 mm
Flange Height 0.305" / 7.8 mm
Baffle Hole Diameter F/M 11.03" / 280.16 mm
Baffle Hole Diameter R/M 10.13" / 257.30 mm
Gasket Supplied Front & Rear
Outer Fixing Holes 4x ø 0.218" on 12.5" PCD / 4x ø 5.5 mm on 317.5 mm PCD
Inner Fixing Holes Not Applicable
Depth 5.17" / 131.3 mm
Weight 17.1 lb / 7.8 Kg
Recommended Enclosure Volume 0.88 - 2.83 cu ft / 25 - 80 Litres
Shipping Weight 20.2 lb / 9.2 Kg
Packing Carton Dimensions (W) 330 (D) 330 (H) 178 mm
DescriptionSizeFormatGet File
12" 2-Way Trapezoidal Reflex Enclosure0.16Mb.pdfDOWNLOAD
Fane Colossus 12MB Datasheet0.16Mb.pdfDOWNLOAD
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