Eighteensound 12LW800

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Ferrite LF-MB-MF Transducers Extended Low Frequency Transducer

Key Features

96 dB SPL 1W / 1m average sensitivity
75 mm (3 in) Interleaved Sandwich Voice coil (ISV)
500 W AES power handling
Double Silicon Spider (DSS) for improved control and linearity
Improved heat dissipation via unique basket design
Weather protected cone and plates for outdoor usage Ideal for compact reflex subwo     Description The 12LW800 is a low frequency loudspeaker which sets a new industry standard in 12" (300mm) Ø high performance transducers, achieving a remarkable 42Hz downwards extension with 96dB average sensitivity, handling peak power levels of 4000W with remarkably low distortion and excellent transient response.
The 12LW800 is intended as the low bass or sub-woofer component, either in highly compact reflex, bandpass or horn loaded configurations, to provide clean, linear  frequency reproduction at high power levels, or as part of a compact high power fullrange system. In its reflex configuration it can be used in extremely compact enclosures (40 - 70lt) making it ideally suited to portable applications such as road shows and bass musical instruments, for “ wedge” stage monitors, etc.
The high excursion capabilities of the double-action roll surround and suspension system, in conjunction with the Eighteen Sound Double Silicon Spider (DSS), has enabled the 12LW800 to achieve very high levels of linear travel for a 12" unit.
The carbon fibre reinforced curvilinear ribbed cone, with its custom design surround, assures smooth response and exceptional strength with maximum reliability under high mechanical stress.
The 75mm Ø state-of-the-art voice coil is similar to that fitted to our 18LW1400 top-of-the-range model. It employs our Interleaved Sandwich Voice coil (ISV) in which a high strength fiberglas former carries windings on both the outer and inner surfaces to achieve a mass balanced coil and providing a uniform motive drive. This, in conjunction with the use of unique high temperature resin adhesives, results in an extremely linear motor assembly with reduced tendency to break-up under high drive conditions.
Excellent heat dissipation is achieved by the incorporation of air channels between the basket and top plate.   General Specifications

Nominal Diameter 300 mm (12 in) Rated Impedance 8 Ohm AES Power 500 W Program Power 800 W Peak Power 4000 W Sensitivity 96 dB Frequency Range 46 ÷ 4200 Hz Power Compression @-10dB 0,9 dB Power Compression @-3dB 2,6 dB Power Compression @Full Power 4 dB Max Recomm. Frequency 1300 Hz Recomm. Enclosure Volume 40 ÷ 100 lt. (1,41 ÷ 3,53 cuft) Max Peak To Peak Excursion 34 mm (1,34 in) Voice Coil Diameter 75 mm (2,95 in) Voice Coil Winding Material copper Suspension Single roll, rubber Cone Curvilinear ribbed, Paper   Thiele Small Parameters

Fs 52 Hz Re 5,6 Ohm Sd 0,0531 sq. mt. (82,31 sq. in. ) Qms 7,6 Qes 0,3 Qts 0,29 Vas 48 lt. (1,70 cuft) Mms 76,5 gr. (0,17 lb) BL 21,3 Tm Linear Mathematical Xmax ± 6,5 mm (± 0,26 in) Le (1kHz) 1,72 mH Ref. Efficiency 1W@1m (half space) 95,5 dB   Mounting information

Overall diameter 315 mm (12,4 in) N. of mounting holes and bolt 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 ø 282 mm (11,1 in) Rear mount baffle cutout ø 282 mm Total depth 151 mm (5,94 in) Flange and gasket thickness 20 mm (0,79 in) Flange and gasket thickness 20 mm (0,79 in) Net weight 8,1 kg (17,88 lb) Shipping weight 8,9 kg (19,65 lb) CardBoard Packaging dimensions 332 x 332 x 184 mm (13,07 x 13,07 x 7,24 in)