21NLW4000 18 Eighteen SOUND Altoparlante Subwoofer 1700W 97dB 21"

€769.00

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Description
Product Details

Description

The 21NLW4000 is a 21" (533 mm) extended low frequency loudspeaker, designed for use in vented enclosures. The loudspeaker is designed to withstand high power levels without damage while providing clean and undistorted LF reproduction at a very high SPL. For optimum results we recommend amplifiers able to deliver 3200 Watt program power.

The 21NLW4000 features a unique motor featuring a high grade neodymium magnet assembly in a structure optimized for thermal and magnetic efficiency.

The transducer features include a large displacement suspension system which, in conjunction with a composite reinforced, straight ribbed cone, allows an ultra-linear piston action and provides full mechanical control across the entire working range.

The 100mm (4 in) state-of-the-art voice-coil utilizing Interleaved Sandwich Voice coil (ISV) technology, provides high levels of thermal stability and durability. The ISV technology achieves a balanced linear motor unit exerting an exceptionally high force factor.

General Specifications

Nominal Diameter	533mm (21 in)
Rated Impedance	8 Ohm
AES Power	1600 W
Program Power	3200 W
Peak Power	7200 W
Sensitivity	94 dB
Frequency Range	30-1800Hz
Power Compression @-10dB	0,62 dB
Power Compression @-3dB	2,18 dB
Power Compression @Full Power	3,57 dB
Max Recomm. Frequency	150Hz
Recomm. Enclosure Volume	120-300 lt (4.24 - 10.60 cuft)
Minimum Impedance	6 Ohm at 25°C
Max Peak To Peak Excursion	70 mm (2.76 in)
Voice Coil Diameter	100 mm (4 in)
Voice Coil winding material	Copper wire
Suspension	Triple-roll, Polycotton
Cone	Complex Composite

Thiele Small Parameters

Fs	29 Hz
Re	4,9 Ohm
Sd	0,166 sq. mt. (257,30 sq. in.)
Qms	22,0
Qes	0,38
Qts	0,37
Vas	305 lt. (10,77 cuft)
Mms	380 gr. (0,83 lb)
BL	30,0 Tm
Linear Mathematical Xmax	± 15 mm (± 0,59 in)
Le (1kHz)	2,80 mH
Ref. Efficiency 1W@1m (half space)	2%

Mounting information

Overall diameter	545mm (21,46 in)
N. of mounting holes and bolt	8
Mounting holes diameter	8,5 mm (0,33 in)
Bolt circle diameter	520mm (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	245 mm (9,64 in)
Flange and gasket thickness	18 mm (0,7 in)
Net weight	11,6 kg (25.5 lb)
Shipping weight	13,1 Kg (28,8 lb)
Packaging Dimensions	570x570x290 mm (22,4x22,4x11,4 in)