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18SOUND 18NLW4500

18SOUND 18NLW4500

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18SOUND (Eighteen Sound) 18NLW4500 — 18" / 18 inch · High-Performance Woofer · Subwoofer / Bass · Neodymium
4.5" voice coil · 4/8 Ω
Part no.: 42A-CHS-TT-18S-0037

628.00 € 628.0 EUR 628.00 €

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  • Manufacturer
  • Category
  • Series
  • 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 18NLW4500 — 18" · Woofer

1800 W AES · 97 dB Sensitivity · Frequency range 30 Hz – 1000 Hz

Technical data

  • Diameter: 18 "
  • Voice coil: 4.5 "
  • Power handling: 1800 W AES
  • Sensitivity: 97 dB
  • Impedance: 8 Ω
  • Weight: 12 kg
  • Mounting depth: 233 mm
  • Frequency range: 30 – 1000 Hz

Datasheet (PDF) · Manufacturer page

Series: NLW · Part no.: 42A-CHS-TT-18S-0037

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs35 Hz
Total Q Qts0.33
Electrical Q Qes0.34
Mechanical Q Qms9.7
Equivalent volume Vas151.0 l
Moving mass Mms286.0 g
Cone area Sd1.225 cm²
Linear excursion Xmax15.3 mm
Force factor BL30.3 Tm
DC resistance Re5 Ω
Voice coil inductance Le2 mH

Enclosure suggestion

The EBP of 103 suggests a bass-reflex enclosure. EBP = fs / Qes = 35 / 0.34

Sealed (Qtc 0.707)

Enclosure volume Vb
42.1 l
System resonance Fc
75 Hz
Cut-off frequency F3
75 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
77.8 l
Tuning frequency Fb
43 Hz
Cut-off frequency F3
47 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
Impedance (Ω) 8
Power handling (W) 1800
Sensitivity (dB) 97
Frequency from (Hz) 30
Frequency to (Hz) 1000
Abmessungen & Korb
Diameter 18
Voice coil (inch) 4.5
Mounting depth (mm) 233
Weight (kg) 12
Thiele-Small-Parameter
Re (Ω) 5
Le (mH) 2
Fs (Hz) 35
Qms 9.7
Qes 0.34
Qts 0.33
Vas (l) 151
Xmax (mm) 15.3
BL (Tm) 30.3
Mms (kg) 0.286
Sd (m²) 0.1225