Eighteensound 18W1300 Low Frequency Transducer Lautsprecher

99,5 dB SPL 1W / 1m average sensitivity100 mm (4 in) Interleaved Sandwich Voice coil (ISV)850 W AES power handlingWeather protected cone and plates for outdoor usageDouble Silicon Spider (DSS) for improved excursion control and linearityDouble Demodulating Rings (DDR) for lower distortion and improved heat dissipationImproved heat dissipation via unique basket design
The 18W1300 is a low frequency loudspeaker which sets a new industry standard in 18" (460 mm) high output transducers. It represents a further development of the Eighteen Sound 18LW1400 but with a lighter mass and increased sensitivity.The 18W1300 can be used as a low bass or subwoofer component, in either a reflex, bandpass or horn loaded configuration, in high power fixed or touring loudspeaker systems. It provides clean, linear, undistorted low frequency reproduction at very high power levels. In its reflex configuration, it can also be used for bass musicalinstrument applications.The high excursion capabilities of the surround and suspension system, in conjunction with the Double Silicon Spider (DSS), enable the 18W1300 to achieve high levels of linear travel while maintaining full control over the moving mass.The carbon fiber reinforced curvilinear ribbed cone assures smooth response and exceptional strength with maximum reliability under high mechanical stress.The state-of-the-art voice coil employs our own Interleaved Sandwich Voice coil (ISV) technology, in which a high strength fiberglas former carries windings on both the outer and inner surfaces. This results in a balanced coil with a uniform distribution of mass and motive energy, creating an extremely linear motor assembly. The already low distortion and unmistakable sound quality of this loudspeaker is improved by Double Demodulating Rings (DDR), designed to dramatically reduce the intermodulationand harmonic distortion while improving the transient response.Excellent heat dissipation has been achieved by incorporating air channels between the basket and the magnetic top plate.Maximum flux concentration and force factor in the gap is assured by the unique shape and design of the top and back plates, which have been researched and designed using our in-house magnetic flux FEA CAD resource.Due to the increasing use of high power audio systems at outdoor events or in marine environments, the 18W1300 has been designed to perform properly under inclement weather conditions. This has been achieved using of an exclusive cone treatment which improves pulp strength and gives water repellent properties to both sides ofthe cone. In addition, a special treatment is applied to the top and back plates which is far more resistant to the corrosive effects of salts and oxidization than any other treatment in use.

Nominal Diameter	460 mm (18 in)
Rated Impedance	8 Ohm
AES Power	850 W
Program Power	1200 W
Peak Power	6000 W
Sensitivity	99,5 dB
Frequency Range	38 - 3300 Hz
Power Compression @-10dB	0,7 dB
Power Compression @-3dB	2,1 dB
Power Compression @Full Power	3,2 db
Max Recomm. Frequency	500 Hz
Recomm. Enclosure Volume	150 ÷ 350 lt. (5,3 ÷ 12,36 cuft)
Max Peak To Peak Excursion	50 mm (1,97 in)
Voice Coil Diameter	100 mm (4 in)
Voice Coil Winding Material	aluminum
Suspension	Triple roll, polycotton
Cone	Curvilinear ribbed, Paper

Thiele Small Parameters

Fs	35 Hz
Re	5 Ohm
Sd	0,1225 sq. mt. (189,88 sq. in.)
Qms	5
Qes	0,35
Qts	0,33
Vas	336 lt. (11,87 cuft)
Mms	129 gr. (0,28 lb)
BL	20,4 Tm
Linear Mathematical Xmax	± 8,5 mm (± 0,33 in)
Le (1kHz)	1,48 mH
Ref. Efficiency 1W@1m (half space)	98,2 dB

Mounting information

Overall diameter	462 mm (18,18 in)
N. of mounting holes and bolt	8
Mounting holes diameter	8,5 mm (0,33 in)
Bolt circle diameter	438-440 mm (17,24-17,32 in)
Front mount baffle cutout ø	416 mm (16,38 in)
Rear mount baffle cutout ø	422 mm (16,61 in)
Total depth	211,9 mm (8,34 in)
Flange and gasket thickness	26 mm (1,02 in)
Flange and gasket thickness	26 mm (1,02 in)
Net weight	13 kg (28,7 lb)
Shipping weight	14,4 kg (32 lb)
CardBoard Packaging dimensions	482 x 482 x 257 mm (18,98 x 18,98 x 10,12 in)