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18SOUND 18LW1251

18SOUND 18LW1251

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18SOUND (Eighteen Sound) 18LW1251 — 18" / 18 inch · Woofer · Subwoofer / Bass · Ferrite Magnet
4" voice coil · 8 Ω
Part no.: 42A-CHS-TT-18S-0009

350.00 € 350.0 EUR 350.00 €

Price on request

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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 18LW1251 — 18" · Woofer

1000 W AES · 98 dB Sensitivity · Frequency range 35 Hz – 3500 Hz

Technical data

  • Diameter: 18 "
  • Voice coil: 4 "
  • Power handling: 1000 W AES
  • Sensitivity: 98 dB
  • Impedance: 8 Ω
  • Magnet: Ferrite
  • Weight: 13 kg
  • Mounting depth: 207 mm
  • Frequency range: 35 – 3500 Hz

Datasheet (PDF) · Manufacturer page

Series: LW · Part no.: 42A-CHS-TT-18S-0009

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs35 Hz
Total Q Qts0.27
Electrical Q Qes0.28
Mechanical Q Qms8
Equivalent volume Vas268.0 l
Moving mass Mms142.0 g
Cone area Sd1.134 cm²
Linear excursion Xmax9 mm
Force factor BL23.6 Tm
DC resistance Re5 Ω
Voice coil inductance Le2.73 mH

Enclosure suggestion

The EBP of 125 suggests a bass-reflex enclosure. EBP = fs / Qes = 35 / 0.28

Sealed (Qtc 0.707)

Enclosure volume Vb
45.8 l
System resonance Fc
92 Hz
Cut-off frequency F3
92 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
71.2 l
Tuning frequency Fb
53 Hz
Cut-off frequency F3
63 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) 1000
Sensitivity (dB) 98
Frequency from (Hz) 35
Frequency to (Hz) 3500
Abmessungen & Korb
Diameter 18
Voice coil (inch) 4
Mounting depth (mm) 207
Weight (kg) 13
Thiele-Small-Parameter
Re (Ω) 5
Le (mH) 2.73
Fs (Hz) 35
Qms 8
Qes 0.28
Qts 0.27
Vas (l) 268
Xmax (mm) 9
BL (Tm) 23.6
Mms (kg) 0.142
Sd (m²) 0.1134