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18SOUND 18NLW4100

18SOUND 18NLW4100

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18SOUND (Eighteen Sound) 18NLW4100 — 18" / 18 inch · High-Performance Woofer · Subwoofer / Bass · Neodymium
4" voice coil · 4/8 Ω
Part no.: 42A-CHS-TT-18S-0041

505.00 € 505.0 EUR 505.00 €

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  • Manufacturer
  • Category
  • Series
  • Magnet
  • Impedance (Ω)
  • Power handling (W)
  • Sensitivity (dB)
  • Frequency from (Hz)
  • Frequency to (Hz)
  • Diameter
  • Voice coil (inch)
  • Mounting depth (mm)
  • Weight (kg)
  • Re (Ω)
  • Le (mH)
  • Fs (Hz)
  • Qms
  • Qes
  • Qts
  • Vas (l)
  • Xmax (mm)
  • BL (Tm)
  • Mms (kg)
  • Sd (m²)

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18SOUND 18NLW4100 — 18" · Woofer

1500 W AES · 96.5 dB Sensitivity · Frequency range 30 Hz – 800 Hz

Technical data

  • Diameter: 18 "
  • Voice coil: 4 "
  • Power handling: 1500 W AES
  • Sensitivity: 96.5 dB
  • Impedance: 8 Ω
  • Magnet: Neo
  • Weight: 10 kg
  • Mounting depth: 232 mm
  • Frequency range: 30 – 800 Hz

Datasheet (PDF) · Manufacturer page

Series: NLW · Part no.: 42A-CHS-TT-18S-0041

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs31 Hz
Total Q Qts0.34
Electrical Q Qes0.35
Mechanical Q Qms11.2
Equivalent volume Vas180.0 l
Moving mass Mms307.0 g
Cone area Sd1.225 cm²
Linear excursion Xmax15 mm
Force factor BL29 Tm
DC resistance Re4.9 Ω
Voice coil inductance Le2.29 mH

Enclosure suggestion

The EBP of 89 is in the intermediate range — either works; sealed plays tighter, bass reflex deeper and louder. EBP = fs / Qes = 31 / 0.35

Sealed (Qtc 0.707)

Enclosure volume Vb
54.2 l
System resonance Fc
64 Hz
Cut-off frequency F3
64 Hz

Bass reflex (QB3 after Small)

Enclosure volume Vb
102.4 l
Tuning frequency Fb
37 Hz
Cut-off frequency F3
40 Hz

Vb is the required net internal volume, Fb the tuning frequency of the reflex port and F3 the frequency at which the level has dropped by 3 dB. Calculated approximation after Small. A starting point for simulation, not a finished build plan.

Comparable drivers

Same size, same type, Qts within ±30 %.

Specifications

Allgemein
Manufacturer 18SOUND
Category Low Frequency
Series NLW
Magnet Neo
Impedance (Ω) 8
Power handling (W) 1500
Sensitivity (dB) 96.5
Frequency from (Hz) 30
Frequency to (Hz) 800
Abmessungen & Korb
Diameter 18
Voice coil (inch) 4
Mounting depth (mm) 232
Weight (kg) 10
Thiele-Small-Parameter
Re (Ω) 4.9
Le (mH) 2.29
Fs (Hz) 31
Qms 11.2
Qes 0.35
Qts 0.34
Vas (l) 180
Xmax (mm) 15
BL (Tm) 29
Mms (kg) 0.307
Sd (m²) 0.1225