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• High Spl Output Sub-bass Driver. • 100 Mm (4”) Voic Coil • High

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SUB-BASS DRIVER 27 Hz - 500 Hz FREQUNECY RESPONSE High SPL output sub-bass driver. 100 mm (4”) voic coil High Sensitivity, 99dB Ultra low distortion Double suspension Ultra linearity and stability at high excursions. 12.15 mm Xmax Delivers amazing sub-bass frequency response, 27 Hz - 500 Hz ELECTRO ACOUSTIC SPECIFICATIONS Nominal Chassis Diameter Impedance Power Handling Peak Power (6dB Crest Factor) Usable Frequency Range -6dB Sensitivity (1 w - 1 m) Moving Mass inc. Air Load Minimum Impedance Zmin Effective Piston Diameter Peak Displacement Volume of Cone Vd Magnet Weight Magnetic Gap Depth Flux Density Coil Winding Height Voice Coil Diameter 18” 8.4 Ω 900 w (A.E.S.) 3600 w (A.E.S.) 27 Hz - 500 Hz 99 dB 144 grams 7Ω 15.43" / 392 mm 1.45 litres 120 oz 0.47" / 12 mm 1.0 Tesla 0.98” / 25 mm RE Ohms Qms Qes Qts Vas Ltr Vd litres CMS (mm/N) BL T/m Mms (grms) Xmax (mm) Sd (cm2) Efficiency % Le (1k Hz) 4.0” / 101.6 mm Ultra Low Distortion 12.15 mm Xmax COPPER VOICE COIL FREQUENCY RESPONSE DATA +120 +110 +100 +90 +80 +70 +60 +50 20 50 100 200 500 1k 2k 5k 10k 20k 1k 2k 5k 10k 20k Hz IMPEDANCE THIELE SMALL PARAMETERS FS Hz SENSITIVITY (1w / 1m) 32 Hz 200 5.8 Ω 100 6.2 50 0.336 0.32 236 1.45 20 Ohms • • • • • • • • 99 dB 900 w (A.E.S.) POWER HANDLING dBr 18” / 457 mm CHASSIS DIAMETER 10 5 0.122 27 2 206 1 12.15 20 50 100 200 2.2 1.8 mH 500 Hz 1178 PREDICTED BASS RESPONSE 4.0” / 101.6 mm +6 0 Width Across Flats Flange Height Baffle Hole Diameter F/M Baffle Hole Diameter R/M Gasket Supplied Fixing Holes Depth Weight Recommended Enclosure Volume Shipping Weight Packing Carton Dimensions 19.1” / 485 mm 18” / 457 mm 0.465” / 11.8 mm 16.53” / 420 mm MATERIALS OF CONSTRUCTION Former Material Voice Coil Magnet Material 16.33” / 414 mm Chassis Front & Rear Cone 8x 0.275” diam on 18.425 PCD / 8x 0.275 diam on 17.25 PCD 8x 7 mm diam on 468 PCD / 8x 7 diam on 438.15 PCD 8.85" / 225 mm 33.75 lb /15.3 kg 4.41 - 14.12 cu ft / 125 - 400 litres 37.45 lb / 17 kg Surround / Edge Termination Dust Dome Connectors Polarity Glass Fibre Copper ‘sandwich’ inside outside windings Ferrite Die-cast Aluminium Straight polycellulose Ribbed Cone Polyvinyl Damped Multi Roll, Poly Cotton Solid Paper (Inverted) dB MOUNTING / SHIPPING INFORMATION Overall Diameter -6 -12 -18 -24 -30 -36 5 50 100 500 5k 1k Hz 18'' 457 mm Push-button Spring Terminals Positive Voltage at Red Terminal Causes Forward Motion of Cone 250 x 520 x 520 mm 8.29'' 210.6 mm www.ligwa.co.uk 10 10k 20k