Eighteen Sound 21NTLW5000

Eighteen Sound 21NTLW5000
General Specifications Datasheet
Brand Eighteen Sound
Reference 21NTLW5000
Size 21 in
533 mm
Type Subwoofer
Impedance Z 2 x 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
  • 96,5 dB SPL 1W / 1m average sensitivity
  • Dual 115mm (4,5 in) Tetracoil Aluminum Voice coil
  • 4000 W program power handling
  • Ultra linear suspension behavior for excellent sound clarity
  • Symmetric flux density and inductance behaviour
  • Low noise forced air cooling design
  • Water repellent cone and epoxy coated plates
  • Suitable for vented, horn loaded and bandpass applications
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 332.9 g
Moving mass (including airload) Mms 372 g
Mechanical resistance Rms 13.9 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 mm
Baffle hole diameter 490 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
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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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