Eighteen Sound / 18 Sound - 18LW2420 - Extended LF Ferrite Transducer Subwoofer

Description

18 Sound
18LW2420
Extended LF Ferrite Transducer
Subwoofer.
The 18LW2420 is an 18 inch extended low frequency loudspeaker designed for high SPL subwoofer applications in either a reflex, bandpass or
horn
loaded configuration.
Compared to our industry standard 18LW1400, the 18LW2420 provides higher maximum SPL, increased program power handling and lower power compression. For optimum results we recommend amplifiers able to deliver 2600 Watt program power without clipping. Transducer design features include a large displacement suspension system which, in conjunction with a fiberglass reinforced, straight ribbed cone and the Eighteen Sound proprietary Double Silicon Spider (DSS) technology, allows an ultra-linear piston action and provides full mechanical control across the entire working range. The 100 mm (4 in) inside-outside copper voice coil based on Interleaved Sandwich Voice coil (ISV) technology provides high levels of thermal stability and durability. In order to furtherly increase power handling and reduce power compression figure, 18LW2420 uses the same voice coil ventilation technology developed for our flagship 9000 neodymium transducer series. A special low density material air diffractor has been placed into the backplate acting as a cooling system, increasing power handling capability and lowering the power compression figure. As a final result Eighteen Sound engineers obtained almost 1 dB reduction in full power power compression value if compared to 18LW1400, and an increased program power handling value of 2420 Watt. The low distortion and unmatched sound quality of the 18LW2420 has been significantly improved by Double Demodulating Rings (DDR) embedded in the pole piece of the magnetic structure. These have been designed to reduce the intermodulation and harmonic distortion while improving the transient response. 10% reduction in weight have been obtained optimizing the magnetic structure through advanced FEA CAD simulation tools. 18LW2420 is able to perform properly under inclement weather conditions: the exclusive cone treatment improves pulp strength and gives water repellent properties to both sides of the cone. In addition, the special treatment applied to top and back plates of the magnetic structure is far more resistant to the corrosive effects of salts and oxidization.
Features:
·
98 dB SPL 1W / 1m average sensitivity
·
100 mm (4 in) Interleaved Sandwich Voice coil (ISV)
·
2420 W program power handling
·
Fiberglass reinforced cone
·
Double Silicon Spider (DSS) for superior excursion control and linearity
·
Double Demodulating Rings (DDR) for lower distortion
·
Improved heat dissipation via multi-cell air diffractor and multiple backplate vents
·
Weather protected cone and plates for outdoor usage
·
Ideal for high SPL subwoofer designs
General Specifications
Nominal Diameter
460 mm (18 in)
Rated Impedance
8 Ohm
AES Power
1300 W
Program Power
2420 W
Peak Power
7000 W
Sensitivity
98 dB
Frequency Range
29 - 2500 Hz
Maximum linear excursion
X
max
± 10
mm
Max Recomm. Frequency
500 Hz
Recomm. Enclosure Volume
130 ÷ 350 lt. (4,59 ÷ 12,36 cuft)
Minimum Impedance
6,3 Ohm at 25°C
Max Peak To Peak Excursion
50 mm (1,97 in)
Voice Coil Diameter
100 mm (4 in)
Voice Coil Winding Material
copper
Suspension
Triple roll, Polycotton
Cone
Straight ribbed, fiberglass reinforced cellulos
e
Net Weight : 26.18 lb (11.9 kg)
Shipping Weight : 30.42 lb (13.8 kg)
CardBoard Packaging Dimensions : 19 x 19 x 10.1 in (482 x 482 x 257 mm).
A large inventory of
18 Sound
Products Are Available from our Store.
Contact us for more information on other
18 Sound
Products.
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EACH
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