"Eighteen Sound 12MB700-8 12-inch Woofer MB Ferrite Transducer 8 Ohms Weather Protected Cone and Plates for Outdoor Usage 75 mm Interleaved Sandwich Voice Coil 900-Watt || * Max Peak To Peak Excursion 22 mm (0.87 in) || * Voice Coil Diameter 75 mm (3 in) || * Voice Coil winding material aluminum || * Suspension M-roll.Polycotton || * Cone Curvilinear.Paper || * THIELE SMALL PARAMETERS || * Fs 49 Hz || * Re 5 Ohm || * Sd 0.0531 sq.mt.(82.31 sq.in.) || * Qms 4.7 || * Qes 0.2 || * ON 0.19 || * Vas 101 It.(3.57 cuft) || * Mms 41 gr.(0.09 Ib)101 It.(3.57 cult) || * BI 17.8 Tm || * Linear Mathematical Xmax +/- 4.5 mm (+/- 0.18 in) || * Le (1kHz) 0.9 mH || * Ref.Efficiency 1W@1m (half space) 99.6 dB || || * Ideal for compact two way and multiway systems || * Rated Impedance 8 Ohm || * Program Power 600 W || * Peak Power 1200 W || * Frequency Range 60 - 5000 Hz || * Power Compression @-10dB 0.4 dB || * Power Compression @-3dB 1.5 dB || * Power Compression @@Full Power 2.8 dB || * Max Recomm.Frequency 4000 Hz || * Recomm.Enclosure Volume 10 - 80 It.(0.3 - 2.83 cuft) || * Minimum Impedance 5.7 Ohm at 25 DegreesC || || * Very High Output MB Ferrite Transducer || * 101.5 dB SPL 1W / lm sensitivity || * 75 mm (3 in) Interleaved Sandwich Voice coil (ISV) || * 450 W AES power handling || * Double Demodulating Rings (DDR) for lower distortion || * Improved heat dissipation via unique basket design || * Weather protected cone and plates for outdoor usage || || The 12MB700 is a very high sensitivity (101.5 dB 1W/1m) midbass driver with high power handling capabilities. The 12MB700 can be used as either a bass/mid driver in compact 2-way reflex enclosures or as a direct radiating or horn loaded, dedicated midrange driver, in multi-way touring and fixed installation concert and arena systems. Its curvilinear paper cone made from a special high strength wood pulp, has been designed to achieve the best possible linearity within its intended frequency range and to control bell-mode resonances around the cone circumference. The cone is carried by a multiroll suspension formed of a linen-like material, which is more resistant to aging and fatigue than traditional materials. || The 75 mm diameter state-of-the-art voice coil is similiar to those fitted to our top-of-the-range 18"" and 15"" models but it is wound with aluminum wire. It employs our Interleaved Sandwich Voice coil (ISV) technology in which a high strength fiberglas former carries windings on both the outer and inner surfaces to achieve a mass balanced coil. This results in an extremely linear motor assembly with a reduced tendency for eccentric behavior when driven hard."