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18SOUND 18NLW9400

18SOUND 18NLW9400

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18SOUND (Eighteen Sound) 18NLW9400 — 18" / 18 inch · Woofer · Subwoofer / Bass · Neodymium
4" voice coil · 4/8 Ω
Part no.: 42A-CHS-TT-18S-0040

419.00 € 419.0 EUR 419.00 €

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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 18NLW9400 — 18" · Woofer

1200 W AES · 98 dB Sensitivity · Frequency range 30 Hz – 2500 Hz

Technical data

  • Diameter: 18 "
  • Voice coil: 4 "
  • Power handling: 1200 W AES
  • Sensitivity: 98 dB
  • Impedance: 8 Ω
  • Magnet: Neo
  • Weight: 8.7 kg
  • Mounting depth: 223 mm
  • Frequency range: 30 – 2500 Hz

Datasheet (PDF) · Manufacturer page

Series: NLW · Part no.: 42A-CHS-TT-18S-0040

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs33 Hz
Total Q Qts0.26
Electrical Q Qes0.28
Mechanical Q Qms6.1
Equivalent volume Vas268.0 l
Moving mass Mms180.0 g
Cone area Sd1.225 cm²
Linear excursion Xmax9.5 mm
Force factor BL26 Tm
DC resistance Re5 Ω
Voice coil inductance Le1.9 mH

Enclosure suggestion

The EBP of 118 suggests a bass-reflex enclosure. EBP = fs / Qes = 33 / 0.28

Sealed (Qtc 0.707)

Enclosure volume Vb
41.9 l
System resonance Fc
90 Hz
Cut-off frequency F3
90 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
62.9 l
Tuning frequency Fb
52 Hz
Cut-off frequency F3
62 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) 1200
Sensitivity (dB) 98
Frequency from (Hz) 30
Frequency to (Hz) 2500
Abmessungen & Korb
Diameter 18
Voice coil (inch) 4
Mounting depth (mm) 223
Weight (kg) 8.7
Thiele-Small-Parameter
Re (Ω) 5
Le (mH) 1.9
Fs (Hz) 33
Qms 6.1
Qes 0.28
Qts 0.26
Vas (l) 268
Xmax (mm) 9.5
BL (Tm) 26
Mms (kg) 0.18
Sd (m²) 0.1225