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18SOUND 18LW2420

18SOUND 18LW2420

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18SOUND (Eighteen Sound) 18LW2420 — 18" / 18 inch · Woofer · Subwoofer / Bass · Ferrite Magnet
4" voice coil · 4/8 Ω
Part no.: 42A-CHS-TT-18S-0006

365.00 € 365.0 EUR 365.00 €

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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 18LW2420 — 18" · Woofer

1300 W AES · 98 dB Sensitivity · Frequency range 30 Hz – 2500 Hz

Technical data

  • Diameter: 18 "
  • Voice coil: 4 "
  • Power handling: 1300 W AES
  • Sensitivity: 98 dB
  • Impedance: 8 Ω
  • Magnet: Ferrite
  • Weight: 12.4 kg
  • Mounting depth: 215 mm
  • Frequency range: 30 – 2500 Hz

Datasheet (PDF) · Manufacturer page

Series: LW · Part no.: 42A-CHS-TT-18S-0006

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs34 Hz
Total Q Qts0.36
Electrical Q Qes0.38
Mechanical Q Qms6.3
Equivalent volume Vas196.0 l
Moving mass Mms210.0 g
Cone area Sd1.225 cm²
Linear excursion Xmax10 mm
Force factor BL25.5 Tm
DC resistance Re5.2 Ω
Voice coil inductance Le1.5 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 = 34 / 0.38

Sealed (Qtc 0.707)

Enclosure volume Vb
68.6 l
System resonance Fc
67 Hz
Cut-off frequency F3
67 Hz

Bass reflex (QB3 after Small)

Enclosure volume Vb
134.6 l
Tuning frequency Fb
38 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 LW
Magnet Ferrite
Impedance (Ω) 8
Power handling (W) 1300
Sensitivity (dB) 98
Frequency from (Hz) 30
Frequency to (Hz) 2500
Abmessungen & Korb
Diameter 18
Voice coil (inch) 4
Mounting depth (mm) 215
Weight (kg) 12.4
Thiele-Small-Parameter
Re (Ω) 5.2
Le (mH) 1.5
Fs (Hz) 34
Qms 6.3
Qes 0.38
Qts 0.36
Vas (l) 196
Xmax (mm) 10
BL (Tm) 25.5
Mms (kg) 0.21
Sd (m²) 0.1225