18 Sound 12ND610 Mid-Bass?Lautsprecher? Eigenschaften: 102 dB SPL 1W / 1m average sensitivity 75 mm (3 in) Interleaved Sandwich Voice coil (ISV) 450 W continuous pink noise power handling Neodymium magnet assembly Extremely high sound quality Very shallow profile, 120 mm (4,7 in) Ideal for mid and mid-bass high loading systems Water resistant cone Beschreibung: ? The 12ND610 is an extremely high output neodymium mid-bass transducer perfect for high quality professional systems. It has been designed for use in horn-loaded, as well as bass-reflex compact enclosures. Its cone is capable of carrying significant loadings thanks to a dedicated reinforcing treatment. The extremely powerful external neodymium magnet assembly assures high flux concentration, low power compression and excellent heat exchange. The levels of force factor and power handling result in the best power to weight ratio on the market today.. The curvilinear paper cone has been designed by Eighteen Sound engineers with a special high-strength wood pulp 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 built from a linen-like material, which is more resistant to aging and fatigue than traditional materials. The basket, heat sink and cone singular treatments make the 12ND610 suitable for use in high humidity environments. The 75 mm state-of-the-art voice coil is similar to the one 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. The final result is an extremely linear motor assembly with a reduced tendency for eccentric behavior when driven hard. A proprietary humidity-block cone treatment makes the transducer suitable for outdoor use in adverse weather conditions. In addition, a special coating applied to both the top and back plates makes the 12ND610 far more resistant to the corrosive effects of salts and oxidization. GENERAL SPECIFICATIONS ? Nominal Diameter 300mm (12 in) Rated Impedance 8 Ohm Continuous Pink Noise? 450W Continuous Power? 350W Program Power? 700W Peak Power? 1500W Sensitivity? 102dB Frequency Range? 80 - 5500 Hz Power Compression @-10dB? (35 W) 0,7 dB Power Compression @-3dB (175 W) 1,9 dB Power Compression @Full Power (350 W) 2,4 dB Max Recomm. Frequency 2000 Hz Recomm. Enclosure Volume 8 ? 40 lt. (0,28 ? 1,41 cuft) Minimum Impedance 4,2 Ohm at 25?C Max Peak To Peak Excursion 23 mm (0,91 in) Voice Coil Diameter 75 mm (3 in) Voice Coil Winding Material aluminum Polarity positive voltage on red terminal gives forward cone motion THIELE SMALL PARAMETERS ? Fs 46 Hz Re 5,9 Ohm Sd 0,0531 sq.mt. (82,31 sq.in.) Qms 4,3 Qes 0,15 Qts 0,14 Vas 94,4 lt. (3,32 cuft) Mms 49 gr. (0,11 lb) BL 24 Tm Linear Mathematical Xmax? ? 3,5 mm (? 0,14 in) Le (1kHz) 1,17 mH Ref. Efficiency 1W@1m (half space) 100 dB MOUNTING INFORMATIONS ? Overall diameter 315 mm (12,4 in) N. of mounting holes 8 Mounting holes diameter 7,15 mm (0,28 in) Bolt circle diameter 296-300 mm (11,65-11,8 in) Front mount baffle cutout ? 282 mm (11,1 in) Rear mount baffle cutout ? 282 mm (11,1 in) Total depth 124 mm (4,88 in) Flange and gasket thickness 11,5 mm (0,45 in) Net weight 3,4 kg (7,51 lb) Shipping weight 4,2 kg (9,27 lb) CardBoard Packaging dimensions 332 x 332 x 184 mm(13,07 x 13,07 x 7,24 in)
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