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18SOUND 18LW1400

18SOUND 18LW1400

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18SOUND (Eighteen Sound) 18LW1400 — 18" / 18 inch · Woofer · Subwoofer / Bass · Ferrite Magnet
4" voice coil · 4/8 Ω
Part no.: 42A-CHS-TT-18S-0008

379.00 € 379.0 EUR 379.00 €

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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 18LW1400 — 18" · Woofer

1000 W AES · 97 dB Sensitivity · Frequency range 28 Hz – 2500 Hz

Technical data

  • Diameter: 18 "
  • Voice coil: 4 "
  • Power handling: 1000 W AES
  • Sensitivity: 97 dB
  • Impedance: 4 Ω
  • Magnet: Ferrite
  • Weight: 13.3 kg
  • Mounting depth: 215 mm
  • Frequency range: 28 – 2500 Hz

Datasheet (PDF) · Manufacturer page

Series: LW · Part no.: 42A-CHS-TT-18S-0008

Thiele-Small parameters

Nominal impedance4 Ω
Resonance frequency fs33 Hz
Total Q Qts0.32
Electrical Q Qes0.34
Mechanical Q Qms6.6
Equivalent volume Vas210.0 l
Moving mass Mms190.0 g
Cone area Sd1.225 cm²
Linear excursion Xmax9 mm
Force factor BL22.1 Tm
DC resistance Re3.6 Ω
Voice coil inductance Le1.5 mH

Enclosure suggestion

The EBP of 97 is in the intermediate range — either works; sealed plays tighter, bass reflex deeper and louder. EBP = fs / Qes = 33 / 0.34

Sealed (Qtc 0.707)

Enclosure volume Vb
54.1 l
System resonance Fc
73 Hz
Cut-off frequency F3
73 Hz

Bass reflex (QB3 after Small)

Enclosure volume Vb
97.8 l
Tuning frequency Fb
42 Hz
Cut-off frequency F3
46 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 LW
Magnet Ferrite
Impedance (Ω) 4
Power handling (W) 1000
Sensitivity (dB) 97
Frequency from (Hz) 28
Frequency to (Hz) 2500
Abmessungen & Korb
Diameter 18
Voice coil (inch) 4
Mounting depth (mm) 215
Weight (kg) 13.3
Thiele-Small-Parameter
Re (Ω) 3.6
Le (mH) 1.5
Fs (Hz) 33
Qms 6.6
Qes 0.34
Qts 0.32
Vas (l) 210
Xmax (mm) 9
BL (Tm) 22.1
Mms (kg) 0.19
Sd (m²) 0.1225