Eighteen Sound 21NLW4000

Eighteen Sound 21NLW4000
Eighteen Sound 21NLW4000
General Specifications Datasheet
Brand Eighteen Sound
Reference 21NLW4000
Manufacturer website www.eighteensound.com
Size 21 in
533 mm
Type Low Frequency
Impedance Z 8 Ω
Minimum impedance Zmin 6.0 Ω
Nominal Power P 1600 W
Program Power Pmax 3200 W
Sensitivity SPL 94 dB
Usable frequency range 30 - 1800 Hz
Recommended crossover 150 Hz
Eighteen Sound 21NLW4000 Frequency response
Eighteen Sound 21NLW4000 Impedance
Thiele/Small parameters Values in gray are calculated.
Resonant frequency Fs 29 Hz
Surface area of cone Sd 1660 cm²
DC resistance Re 4.9 Ω
Mechanical Q Qms 22.00
Electromagnetic Q Qes 0.38
Total Q factor Qts 0.37
Mechanical suspension compliance Cms 78 µm/N
Compliance equivalent air volume Vas 305 liters
Moving mass Mmd 341 g
Moving mass (including airload) Mms 380 g
Mechanical resistance Rms 3.15 N·s/m
BL product BL 30 T·m
Voice coil inductance Le 2.8 mH
Maximum linear excursion (one way) Xmax 15 mm
Maximum mechanical limit (one way) Xlim 35 mm
Efficiency η₀ 2 %
Efficiency bandwidth product EBP 76
Effective diaphragm diameter Ø 45.97 cm
Import this driver in a simulation software:
WinISD 18Sound 21NLW4000.wdr
Hornresp 18Sound 21NLW4000.txt
Basta! 18Sound 21NLW4000.bastaelement
Eighteen Sound 21NLW4000 Dimensions
Dimensions
Overall diameter 545.0 mm
Baffle hole diameter 490.0 mm
Overall depth 245 mm
Flange thickness 18 mm
Net weight 11.6 kg
Materials of construction
Diaphragm material Composite
Surround material Polycotton
Voice Coil Parameters
Voice coil diameter 100 mm
Coil material Copper
Similar drivers Power
(W)
SPL
(dB)
Fs
(Hz)
Sd
(cm²)
Qms
Qes
Vas
(L)
Xmax
(mm)
Eighteen Sound 21NLW4000 1600 94 29 1660 22.00 0.38 305 15.0
Eighteen Sound 21LW2500 1600 95 29 1660 22.00 0.38 305 14.0
Eighteen Sound 18NLW4000 1500 94 34 1130 22.00 0.34 135 15.0
B&C Speaker 21SW115 8Ω 1700 97 30 1680 10.90 0.39 318 14.0
Eighteen Sound 18LW2500 1600 95 34 1130 22.00 0.34 135 14.0
Precision Devices PDN.2151 1000 98 31 1698 18.30 0.28 303 10.5
Precision Devices PD.2150 1000 98 30 1698 14.21 0.28 309 10.5
B&C Speaker 21DS115 4Ω 1700 99 30 1680 11.00 0.20 274 15.0
B&C Speaker 21DS115 8Ω 1700 99 30 1680 10.00 0.24 269 15.0
B&C Speaker 21SW115 4Ω 1700 97 33 1680 7.70 0.37 278 14.0
Beyma 18LEX1600Nd 1600 96 33 1255 11.40 0.45 231 14.5

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490 ms