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COLOSSUS 18-1000

Sub Bass Driver

Data Sheet
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The Colossus 18-1000 is intended for use as a high-output sub-bass driver either singly or in multi way systems. It is suitable for loading in a variety of enclosure types since it allows enclosure designers considerably more freedom with specialised loading techniques without having to make allowances for physical characteristics or power handling limitations.

The Colossus 18-1000 is intended for use as a high-output sub-bass driver either singly or in multi way systems. It is suitable for loading in a variety of enclosure types since it allows enclosure designers considerably more freedom with specialised loading techniques without having to make allowances for physical characteristics or power handling limitations. The unit features a 4 inch voice coil immersed in a symmetric magnetic field and centralized by using two suspensions in a dual arrangement to maintain ultra linearity and stability at high excursions. The curvilinear polycellulose cone is reinforced with high strength fibrulated nylon fibres to resist deformation under extreme loads. The driver handles 1000 Watts (A.E.S.) continuous and can cope with peaks in excess of 4000 Watts. This is due to advanced thermal management in the form of a vented die-cast chassis and motor system using an internal heat sink coupled with increased motor system and voice coil venting. These measures effectively remove heat from the voice coil resulting in extremely low-power compression. The Colossus 18-1000 is designed for use in 100 to 250 litre ported enclosures. 

Electro Acoustic Specifications
Nominal Chassis Diameter 18”
Impedance 8.4 Ω
Power Handling 1000 w (A.E.S.)
Peak Power (6dB Crest Factor) 4000 w (A.E.S.)
Usable Frequency Range (-6dB) 27 Hz - 500 Hz
Sensitivity (1W - 1m) 98 dB
Moving Mass (inc. Air Load) 144 grams
Minimum Impedance (Zmin) 7 Ω
Effective Piston Diameter 15.43
Magnet Weight 120 oz
Magnetic Gap Depth 0.47
Flux Density 1.0 Tesla
Coil Winding Height 0.98” / 25 mm
Voice Coil Diameter 4.0” / 101.6 mm
Speaker Type Sub Bass Driver
Thiele Small Parameters (TSPs)
FS 32 Hz
Re 5.8 Ω
QMS 6.2
QES 0.336
QTS 0.32
Vas 236 Litres
Vd 1.45 Litres
CMS 0.122 mm/N
BL 26.5 T/m
MMS 206 g
Xmax 12.15 mm
Sd 1178 cm2
Efficiency 2.2%
Le 1.8 mH
EBP N/a
Mounting / Shipping Information
Overall Diameter 19.1” / 485 mm
Width Across Flats 18” / 457 mm
Flange Height 0.465” / 11.8 mm
Baffle Hole Diameter F/M 16.53” / 420 mm
Baffle Hole Diameter R/M 16.33” / 414 mm
Gasket Supplied Front & Rear
Outer Fixing Holes 8x 0.275” diam on 18.425 PCD / 8x 7 mm diam on 468 PCD
Inner Fixing Holes 8x 0.275 diam on 17.25 PCD / 8x 7 diam on 438.15 PCD
Depth 8.85
Weight 33.75 lb /15.3 kg
Recommended Enclosure Volume 4.41 - 14.12 cu ft / 125 - 400 litres
Shipping Weight 37.45 lb / 17 kg
Packing Carton Dimensions 250 x 520 x 520 mm
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