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18SOUND 18NLW9000

18SOUND 18NLW9000

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18SOUND (Eighteen Sound) 18NLW9000 — 18" / 18 inch · High-Performance Woofer · Subwoofer / Bass · Neodymium
5.35" voice coil · 4/8 Ω
Part no.: 42A-CHS-TT-18S-0039

727.99 € 727.99 EUR 727.99 €

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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 18NLW9000 — 18" · Woofer

1800 W AES · 97 dB Sensitivity · Frequency range 32 Hz – 2500 Hz

Technical data

  • Diameter: 18 "
  • Voice coil: 5.31 "
  • Power handling: 1800 W AES
  • Sensitivity: 97 dB
  • Impedance: 8 Ω
  • Magnet: Neo
  • Weight: 12.5 kg
  • Mounting depth: 237 mm
  • Frequency range: 32 – 2500 Hz

Datasheet (PDF) · Manufacturer page

Series: NLW · Part no.: 42A-CHS-TT-18S-0039

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs34 Hz
Total Q Qts0.31
Electrical Q Qes0.32
Mechanical Q Qms7
Equivalent volume Vas206.0 l
Moving mass Mms218.0 g
Cone area Sd1.222 cm²
Linear excursion Xmax14 mm
Force factor BL28 Tm
DC resistance Re5.5 Ω
Voice coil inductance Le1.9 mH

Enclosure suggestion

The EBP of 106 suggests a bass-reflex enclosure. EBP = fs / Qes = 34 / 0.32

Sealed (Qtc 0.707)

Enclosure volume Vb
49.0 l
System resonance Fc
78 Hz
Cut-off frequency F3
78 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
86.4 l
Tuning frequency Fb
45 Hz
Cut-off frequency F3
50 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) 1800
Sensitivity (dB) 97
Frequency from (Hz) 32
Frequency to (Hz) 2500
Abmessungen & Korb
Diameter 18
Voice coil (inch) 5.31
Mounting depth (mm) 237
Weight (kg) 12.5
Thiele-Small-Parameter
Re (Ω) 5.5
Le (mH) 1.9
Fs (Hz) 34
Qms 7
Qes 0.32
Qts 0.31
Vas (l) 206
Xmax (mm) 14
BL (Tm) 28
Mms (kg) 0.218
Sd (m²) 0.1222