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Bass Driver

Data Sheet
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  • 1600 W Program Power.
  • 99 dB Sensitivity (1W/1m).
  • Offers high SPL and attack in two-way ported enclosures.
  • Optimised non-inductive motor system efficiently controls magnetic flux and reduces third-harmonic and intermodulation distortion.
  • Dynamic, smooth and detailed low frequency reproduction.
  • Best suited for use in bass reflex enclosures, delivering bass down to 30Hz (-6dB) in a 125 Litre enclosure.
  • Can also be used well in horn loaded enclosure designs.
  • 4-inch Inside/ outside windings CCAW voice coil.
  • Waterproof cone.

The Colossus 15SB is intended for use in two-way ported enclosures or as an high output bass driver in multi-way systems. The unit features a 4 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 is state of the art material that allows the driver to combine high sensitivity with the structural integrity required to produce undistorted 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 800 Watts (A.E.S) continuous, with peak power handling in excess of 3200 Watts. The driver exhibits an average sensitivity of 99 dB working band and is best used in ported enclosures of 45 to 125 Litres. The Colossus 15SB can deliver bass down to 40 Hz (-3dB), 30 Hz (-6dB) in a tuned 125 Litre ported enclosure.


  • Please enquire about alternative impedances.
  • A.E.S. power handling test. Pink noise bandpass filtered at 12 dB per octave with cutoff frequencies of 45 Hz and 450Hz. 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 15" / 381 mm
Impedance 8 Ω
Power Handling 800 W (A.E.S.)
Peak Power (6dB Crest Factor) 3200 W (A.E.S.)
Usable Frequency Range (-6dB) 40 Hz - 3 kHz
Sensitivity (1W - 1m) Wideband 99 dB
Moving Mass (inc. Air Load) 10 grams
Minimum Impedance (Zmin) 7.3 Ω
Effective Piston Diameter 13" / 330.2 mm
Magnet Weight 120 oz
Magnetic Gap Depth 0.43" / 11 mm
Flux Density 1.1 Tesla
Coil Winding Height 0.75" / 19.05 mm
Voice Coil Diameter 4.0" / 101.6 mm
Speaker Type Bass Driver
Speaker Series The Professional Series
Program Power 1600 W (A.E.S.)
Sensitivity (1W / 1m) Working band
Thiele Small Parameters (TSPs)
FS 41 Hz
Re 5.4 Ω
QMS 6.85
QES 0.3
QTS 0.29
Vas 151 Litres
Vd 0.56 Litres
CMS 0.142 mm/N
BL 22.5 T/m
MMS 106 grams
Xmax 6.5 mm
Sd 866 cm2
Efficiency 3.34%
Le 2.15 mH
EBP 136.67 Hz
Materials of Construction
Coil Former Material Glass Fibre
Voice Coil Material CCAW- Inside/ Outside Windings
Magnet Material Ferrite
Chassis Material Die-cast Aluminium
Cone Material Curvilinear Polycellulose
Surround / Edge Termination Polyvinyl Damped Half Roll Linen
Dust Dome Material Paper
Connectors Push-button Spring Terminals
Polarity Positive voltage at red terminal causes forward motion of cone
Mounting / Shipping Information
Overall Diameter 16" / 406.4 mm
Width Across Flats 15.25" / 387.35 mm
Flange Height 0.305" / 7.8 mm
Baffle Hole Diameter F/M 13.85" / 351.79 mm
Baffle Hole Diameter R/M 14" / 355.6 mm
Gasket Supplied Front & Rear
Outer Fixing Holes 4x ø 0.281" on 15.5" PCD / 4x ø 7.1 mm on 393.7 mm PCD
Inner Fixing Holes 8x ø 0.281" on 14.56" PCD / 8x ø 7.1 mm on 370 mm PCD
Depth 6.5" / 165.1 mm
Weight 22.48 lb / 10.2 Kg
Recommended Enclosure Volume 75 - 125 Litres
Shipping Weight 25.5 lb / 11.57 Kg
Packing Carton Dimensions (W) 440 (D) 440 (H) 220 mm
DescriptionSizeFormatGet File
Fane Colossus 15SB Datasheet0.11Mb.pdfDOWNLOAD
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