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18SOUND 15W500

18SOUND 15W500

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18SOUND (Eighteen Sound) 15W500 — 15" / 15 inch · Woofer/Midrange (WM) · Subwoofer / Bass · Ferrite
2.5" voice coil · 8 Ω
Part no.: 42A-CHS-TT-18S-0022

209.00 € 209.0 EUR 209.00 €

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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 15W500 — 15" · Woofer

350 W AES · 100.5 dB Sensitivity · Frequency range 50 Hz – 4500 Hz

Technical data

  • Diameter: 15 "
  • Voice coil: 2.5 "
  • Power handling: 350 W AES
  • Sensitivity: 100.5 dB
  • Impedance: 8 Ω
  • Magnet: Ferrite
  • Weight: 4.3 kg
  • Mounting depth: 161 mm
  • Frequency range: 50 – 4500 Hz

Datasheet (PDF) · Manufacturer page

Series: W · Part no.: 42A-CHS-TT-18S-0022

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs50 Hz
Total Q Qts0.52
Electrical Q Qes0.55
Mechanical Q Qms9.64
Equivalent volume Vas189.0 l
Moving mass Mms55.0 g
Cone area Sd850 cm²
Linear excursion Xmax4 mm
Force factor BL12.6 Tm
DC resistance Re5.2 Ω
Voice coil inductance Le1.04 mH

Enclosure suggestion

The EBP of 91 is in the intermediate range — either works; sealed plays tighter, bass reflex deeper and louder. EBP = fs / Qes = 50 / 0.55

Sealed (Qtc 0.707)

Enclosure volume Vb
222.7 l
System resonance Fc
68 Hz
Cut-off frequency F3
68 Hz

Bass reflex (QB3 after Small)

Enclosure volume Vb
436.8 l
Tuning frequency Fb
39 Hz
Cut-off frequency F3
35 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 W
Magnet Ferrite
Impedance (Ω) 8
Power handling (W) 350
Sensitivity (dB) 100.5
Frequency from (Hz) 50
Frequency to (Hz) 4500
Abmessungen & Korb
Diameter 15
Voice coil (inch) 2.5
Mounting depth (mm) 161
Weight (kg) 4.3
Thiele-Small-Parameter
Re (Ω) 5.2
Le (mH) 1.04
Fs (Hz) 50
Qms 9.64
Qes 0.55
Qts 0.52
Vas (l) 189
Xmax (mm) 4
BL (Tm) 12.6
Mms (kg) 0.055
Sd (m²) 0.085