Electro Acoustic Specifications Nominal Chassis Diameter 18″ / 457.2 mm Impedance 4 /8 /16 Ω Power Handling 1000 W (A.E.S.) Peak Power (6dB Crest Factor) 4000 W (A.E.S.) Usable Frequency Range (-6dB) 35 Hz – 1 kHz Sensitivity (1W – 1m) Wideband 99 dB Moving Mass (inc. Air Load) 173 grams Minimum Impedance (Zmin) 6.5 Ω Effective Piston Diameter 15.03″ / 381.76 mm Magnet Weight 120 oz Magnetic Gap Depth 0.39″ / 10 mm Flux Density 1.2 Tesla Coil Winding Height 0.90″ / 23 mm Voice Coil Diameter 4.0″ / 101.6 mm Speaker Type Sub Bass Driver Speaker Series The Professional Series Program Power 2000 W (A.E.S.) Sensitivity (1W / 1m) Working band Thiele Small Parameters (TSPs) FS 33 Hz Re 6.5 Ω QMS 5.77 QES 0.358 QTS 0.337 Vas 236 Litres Vd 0.803 Litres CMS 0.13 mm/N BL 25.9 T/m MMS 173 grams Xmax 7.5 mm Sd 1131 cm2 Efficiency 2.3% Le 1.99 mH EBP 92.18 Hz Materials of Construction Coil Former Material Glass Fibre Voice Coil Material Copper – Inside / Outside Windings Magnet Material Ferrite Chassis Material Die-cast Aluminium Cone Material Straight Polycellulose Ribbed Cone Surround / Edge Termination Polyvinyl Damped Multi Roll. Poly Cotton 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 19.1″ / 485 mm Width Across Flats 18″ / 457 mm Flange Height 0.465″ / 11.8 mm Baffle Hole Diameter F/M 16.53″ / 419.86 mm Baffle Hole Diameter R/M 16.33″ / 414.78 mm Gasket Supplied Front & Rear Outer Fixing Holes 8x ø 0.275″ on 18.425″ PCD / 8x ø 7 mm on 468 mm PCD Inner Fixing Holes 8x ø 0.275″ on 17.25″ PCD / 8x ø 7 mm on 438.15 mm PCD Depth 8.05″ / 205 mm Weight 31.29 lb / 14.2 Kg Recommended Enclosure Volume 3.53 – 8.82 cu ft / 125 – 400 Litres Shipping Weight 35.26 lb / 16 Kg Packing Carton Dimensions (W) 512 (D) 512 (H) 244 mm
