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18SOUND 15NTLW2500

18SOUND 15NTLW2500

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18SOUND (Eighteen Sound) 15NTLW2500 — 15" / 15 inch · Woofer/Midrange (WM) · Subwoofer / Bass · Neodymium · Dual-Gap
2x2.5" voice coil · 4/8 Ω
Part no.: 42A-CHS-TT-18S-0046

335.00 € 335.0 EUR 335.00 €

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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 15NTLW2500 — 15" · Woofer

600 W AES · 100.5 dB Sensitivity · Frequency range 45 Hz – 3200 Hz

Technical data

  • Diameter: 15 "
  • Voice coil: 2.5 "
  • Power handling: 600 W AES
  • Sensitivity: 100.5 dB
  • Impedance: 8 Ω
  • Magnet: Neo
  • Weight: 3.8 kg
  • Mounting depth: 210 mm
  • Frequency range: 45 – 3200 Hz

Datasheet (PDF) · Manufacturer page

Series: NTLW · Part no.: 42A-CHS-TT-18S-0046

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs45 Hz
Total Q Qts0.3
Electrical Q Qes0.31
Mechanical Q Qms8.9
Equivalent volume Vas143.0 l
Moving mass Mms95.0 g
Cone area Sd881 cm²
Linear excursion Xmax8 mm
Force factor BL21.2 Tm
DC resistance Re5.1 Ω
Voice coil inductance Le0.65 mH

Enclosure suggestion

The EBP of 145 suggests a bass-reflex enclosure. EBP = fs / Qes = 45 / 0.31

Sealed (Qtc 0.707)

Enclosure volume Vb
31.4 l
System resonance Fc
106 Hz
Cut-off frequency F3
106 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
53.8 l
Tuning frequency Fb
61 Hz
Cut-off frequency F3
69 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 NTLW
Magnet Neo
Impedance (Ω) 8
Power handling (W) 600
Sensitivity (dB) 100.5
Frequency from (Hz) 45
Frequency to (Hz) 3200
Abmessungen & Korb
Diameter 15
Voice coil (inch) 2.5
Mounting depth (mm) 210
Weight (kg) 3.8
Thiele-Small-Parameter
Re (Ω) 5.1
Le (mH) 0.65
Fs (Hz) 45
Qms 8.9
Qes 0.31
Qts 0.3
Vas (l) 143
Xmax (mm) 8
BL (Tm) 21.2
Mms (kg) 0.095
Sd (m²) 0.0881