Eighteen Sound 8M400F-8 18sound 8woofer/250w/8ohms

Eighteen Sound 8M400F-8 18sound 8woofer/250w/8ohms

SPECIFICATIONS || Nominal Impedance : 8 Ω || Minimum Impedance : 6.5 Ω || Nominal Power Handling : 250 W || Continuous Power Handling : 320 W || Sensitivity : 100.5 dB || Frequency Range : 200 - 9000 Hz || Voice Coil Diameter : 51 mm (2.0 in) || DESIGN || Recommended Enclosure : 6.0 dm3 (0.21 ft3) || Recommended Tuning : 100 Hz || PARAMETERS || Resonance Frequency : 89 Hz || Re : 5.1 Ω || Qes : 0.28 || Qms : 4.03 || Qts : 0.26 || Vas : 13.7 dm3 (0.48 ft3) || Sd : 227.0 cm2 (35.19 in2) || Xmax : 3.0 mm || Mms : 16.9 g || Bl : 13.1 Txm || Le : 0.7 mH || EBP : 317 Hz || MOUNTING AND SHIPPING INFO Overall Diameter : 210 mm (8.27 in) || Bolt Circle Diameter : 196 mm (7.74 in) || Baffle Cutout Diameter : 186.0 mm (7.32 in) || Depth : 106 mm (4.17 in) || Flange and Gasket Thickness : 15 mm (0.61 in) || Net Weight : 4.9 kg (10.8 lb) || Shipping Weight : 5.2 kg ( lb) || Shipping Box : 235x235x150 mm (9.25x9.25x5.91 in) || The 8M400F is a high power, high output, 200 mm (8 in) midrange for high level professional use. The excellent sound quality has been achieved as a result of extensive research on mid frequencies intelligibility. The 8M400F has been designed for use as a midrange in both horn and direct radiation, closer or reflex enclosures, as small as 3 lt. The curvilinear cone, made with a high damping wood pulp, has been designed to achieve the best possible linearity within its frequency range. In-house developed cone treatment is a humidity repellent & also dampens the bell mode resonance significantly. The 51 mm (2 in) ISV aluminum voice coil assembly is wound on a strong fiberglas former to improve force transmission & power handling. ISV technology is based on a high strength fiberglas former w/ half the coil wound on the outside & half on the inside & bonded together using unique high temperature resin adhesives. Powerful magnet assembly assures high flux concentration.