18s 21LW1400 8 Ohm

18s 21LW1400 8 Ohm
459,46 € * 666,40 € * (31,05% gespart)
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  • SW10207
The 21LW1400 is a 21 inch high performance extended low frequency loudspeaker. The transducer... mehr
Produktinformationen "18s 21LW1400 8 Ohm"
The 21LW1400 is a 21 inch high performance extended low frequency loudspeaker. The transducer can be used as a subwoofer component, in either a reflex, band-pass or horn-loaded configuration, in high power auditorium or arena loudspeaker systems. It provides clean and undistorted LF reproduction at very high SPL and enables the speaker to withstand high power levels without damage. The 21LW1400 design features include an exceptional displacement suspension system which, in conjunction with a carbon fiber reinforced straight-ribbed cone and the Double Silicon Spider (DSS), produces an ultra-linear piston action, providing full control across the entire working range. The 100mm inside outside copper voice coil, based on our Interleaved Sandwich Voice-coil (ISV) technology, reaches high levels of thermal stability and durability. ISV technology is based on a high strength fiberglas former with half the coil wound on the outside and half on the inside and bonded together using unique high temperature resin adhesives. This results in a balanced linear motor unit which can exert an exceptionally high force factor. The low distortion and unmatched sound quality of the 21LW1400 has been significantly improved by the Double Demodulating Rings (DDR) embedded in the pole piece of the magnetic structure. These have been designed to dramatically reduce the intermodulation and harmonic distortion while improving transient response at the same time. Excellent heat dissipation has been achieved using the special basket design which incorporates air channels between the basket and the magnetic top plate. In addition, 8 air vents incorporated into the back plate are aligned with the voice coil to force air into the lower part of the gap. 21LW1400 is ready to perform properly under inclement weather conditions. This has been achieved using of an exclusive treatment which improves pulp strength and gives water repellent properties to both sides of the cone. Moreover, a special treatment is applied to the top and back plate of the magnetic structure which is far more resistant to the corrosive effects of salts and oxidization than any other treatment in use.

 

General Specifications

Nominal Diameter 533 mm (21 in)
Rated Impedance 8 Ohm
AES Power 1400 W
Program Power 1600 W
Peak Power 7000 W
Sensitivity 99 dB
Frequency Range 24 - 2000 Hz
Power Compression @-10dB 0,6 dB
Power Compression @-3dB 1,5 dB
Power Compression @Full Power 2,2 dB
Max Recomm. Frequency 250 Hz
Recomm. Enclosure Volume 120 - 500 lt. (4,24 - 17,7 cuft)
Minimum Impedance 6,4 Ohm at 25°C
Max Peak To Peak Excursion 52 mm (2,05 in)
Voice Coil Diameter 100 mm (4 in)
Voice Coil winding material copper
Suspension Triple roll, Polycotton
Cone Straight ribbed, Carbon fiber reinforced Paper

Thiele Small Parameters

Fs 28 Hz
Re 5 Ohm
Sd 0,1662 sq.mt. (257,6 sq.in.)
Qms 9,32
Qes 0,242
Qts 0.235
Vas 385 lt. (13,6 cuft)
Mms 296 gr. (0,65 lb)
BL 33,5 Tm
Linear Mathematical Xmax ± 9,5 mm (± 0,37 in)
Le (1kHz) 2,85 mH
Ref. Efficiency 1W@1m (half space) 98,0 dB

Mounting information

Overall diameter 545 mm (21,46 in)
N. of mounting holes and bolt 8
Mounting holes diameter 10 mm (0,39 in)
Bolt circle diameter 520 mm (20,47 in
Front mount baffle cutout ø 492 mm (19,37 in)
Rear mount baffle cutout ø 490 mm (19,29 in)
Total depth 259 mm (10.2 in)
Flange and gasket thickness 14 mm (0,55 in)
Net weight 17 kg (37,47 lb)
Shipping weight 19,1 kg (42,1 lb)
Packaging Dimensions 550 x 550 x 300 mm (21,65 x 21,65 x 11,8 in)
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