Eighteen Sound 21NLW9601C

Eighteen Sound 21NLW9601C
General Specifications Datasheet
Brand Eighteen Sound
Reference 21NLW9601C
Size 21 in
533 mm
Type Low frequency
Impedance Z 4 Ω
Minimum impedance Zmin 4.0 Ω
Nominal Power P 1800 W
Program Power Pmax 3600 W
Sensitivity SPL 94.5 dB
Usable frequency range 33 - 2000 Hz
Recommended crossover 150 Hz
  • 94,5 dB SPL 1W / 1m average sensitivity
  • 135 mm (5.3 in) split winding four layers ISV copper coil
  • 3600 W program power handling
  • Carbon fiber reinforced treated cellulose cone
  • Triple Silicon Spider (TSS) improves excursion control and linearity even in extreme loading and SPL conditions
  • Single Demodulating Ring (SDR) for lower distortion
  • Low noise cooling design for very low power compression
  • Suitable for bandpass and horn loaded subwoofer designs
Eighteen Sound 21NLW9601C Frequency response
Eighteen Sound 21NLW9601C Impedance
Thiele/Small parameters Values in gray are calculated.
Resonant frequency Fs 38 Hz
Surface area of cone Sd 1660 cm²
DC resistance Re 2.9 Ω
Mechanical Q Qms 6.28
Electromagnetic Q Qes 0.31
Total Q factor Qts 0.29
Mechanical suspension compliance Cms 36 µm/N
Compliance equivalent air volume Vas 140 liters
Moving mass Mmd 445 g
Moving mass (including airload) Mms 484 g
Mechanical resistance Rms 18.4 N·s/m
BL product BL 33.2 T·m
Voice coil inductance Le 1.61 mH
Maximum linear excursion (one way) Xmax 14 mm
Maximum mechanical limit (one way) Xlim 35 mm
Efficiency η₀ 2.42 %
Efficiency bandwidth product EBP 122
Effective diaphragm diameter Ø 46 cm
Import this driver in a simulation software:
WinISD 18Sound 21NLW9601C.wdr
Hornresp 18Sound 21NLW9601C.txt
Basta! 18Sound 21NLW9601C.bastaelement
Eighteen Sound 21NLW9601C Dimensions
Dimensions
Overall diameter 545 mm
Baffle hole diameter 490 mm
Overall depth 250 mm
Flange thickness 18 mm
Net weight 13.6 kg
Materials of construction
Diaphragm material Carbon Fiber
Diaphragm shape Straight
Surround material Heavy Polycotton
Voice Coil Parameters
Voice coil diameter 135 mm
Coil material Copper
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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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