Eighteen Sound 21NTLW5000

Eighteen Sound 21NTLW5000
General Specifications Datasheet
Brand Eighteen Sound
Reference 21NTLW5000
Manufacturer website www.eighteensound.com
Size 21 in
533 mm
Type Extended Low Frequency
Impedance Z 8 Ω
Minimum impedance Zmin 6.8 Ω
Nominal Power P 1800 W
Program Power Pmax 4000 W
Sensitivity SPL 97 dB
Usable frequency range 30 - 1800 Hz
Recommended crossover 150 Hz
Eighteen Sound 21NTLW5000 Frequency response
Eighteen Sound 21NTLW5000 Impedance
Thiele/Small parameters Values in gray are calculated.
Resonant frequency Fs 31 Hz
Surface area of cone Sd 1662 cm²
DC resistance Re 5.3 Ω
Mechanical Q Qms 5.20
Electromagnetic Q Qes 0.38
Total Q factor Qts 0.36
Mechanical suspension compliance Cms 69 µm/N
Compliance equivalent air volume Vas 270 liters
Moving mass Mmd 332.93 g
Moving mass (including airload) Mms 372 g
Mechanical resistance Rms 13.93 N·s/m
BL product BL 32 T·m
Voice coil inductance Le 1.6 mH
Maximum linear excursion (one way) Xmax 17.5 mm
Maximum mechanical limit (one way) Xlim 32.5 mm
Efficiency η₀ 2.1 %
Efficiency bandwidth product EBP 81
Effective diaphragm diameter Ø 46 cm
Import this driver in a simulation software:
WinISD 18Sound 21NTLW5000.wdr
Hornresp 18Sound 21NTLW5000.txt
Basta! 18Sound 21NTLW5000.bastaelement
Dimensions
Overall diameter 545.0 mm
Baffle hole diameter 490.0 mm
Overall depth 320 mm
Flange thickness 18 mm
Net weight 12.5 kg
Materials of construction
Diaphragm material Water Resistant Paper
Diaphragm shape Curvilinear
Surround material Polycotton
Voice Coil Parameters
Voice coil diameter 115 mm
Coil material Aluminum
Number of voice coil 2
Similar drivers Power
(W)
SPL
(dB)
Fs
(Hz)
Sd
(cm²)
Qms
Qes
Vas
(L)
Xmax
(mm)
Eighteen Sound 21NTLW5000 1800 97 31 1662 5.20 0.38 270 17.5
LaVoce SAN214.50 1700 99 30 1661 5.50 0.28 226 15.5
Eighteen Sound 21NLW9001 1800 95 32 1662 4.50 0.34 244 14.0
B&C Speaker 21SW115 4Ω 1700 97 33 1680 7.70 0.37 278 14.0
B&C Speaker 21SW152 2000 96 32 1680 7.00 0.31 200 15.0
Celestion NTR21-5010JD 1600 98 30 1663 5.23 0.31 341 9.0
Eighteen Sound 21NLW9601 1800 96 37 1662 5.50 0.31 175 14.0
B&C Speaker 21DS115 8Ω 1700 99 30 1680 10.00 0.24 269 15.0
B&C Speaker 18SW115 8Ω 1700 97 32 1210 5.60 0.32 187 14.0
B&C Speaker 21SW115 8Ω 1700 97 30 1680 10.90 0.39 318 14.0
B&C Speaker 18DS115 4Ω 1700 97 30 1210 4.75 0.18 177 16.5

LoudspeakerDatabase.com is not affiliated with Eighteen Sound. This page may contain errors or inaccuracies. Please check the up-to-date specifications on the manufacturer website before starting your project.

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