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18SOUND 15NTLW3500

18SOUND 15NTLW3500

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18SOUND (Eighteen Sound) 15NTLW3500 — 15" / 15 inch · Woofer/Midrange (WM) · Subwoofer / Bass · Neodymium · Dual-Gap
2x3.5" voice coil · 4/8 Ω
Part no.: 42A-CHS-TT-18S-0045

439.00 € 439.0 EUR 439.00 €

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 15NTLW3500 — 15" · Woofer

900 W AES · 98 dB Sensitivity · Frequency range 40 Hz – 4000 Hz

Technical data

  • Diameter: 15 "
  • Voice coil: 3.5 "
  • Power handling: 900 W AES
  • Sensitivity: 98 dB
  • Impedance: 8 Ω
  • Magnet: Neo
  • Weight: 5.1 kg
  • Mounting depth: 229 mm
  • Frequency range: 40 – 4000 Hz

Datasheet (PDF) · Manufacturer page

Series: NTLW · Part no.: 42A-CHS-TT-18S-0045

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs45 Hz
Total Q Qts0.39
Electrical Q Qes0.4
Mechanical Q Qms8.7
Equivalent volume Vas131.0 l
Moving mass Mms106.0 g
Cone area Sd881 cm²
Linear excursion Xmax8.3 mm
Force factor BL19.5 Tm
DC resistance Re5.2 Ω
Voice coil inductance Le0.46 mH

Enclosure suggestion

The EBP of 112 suggests a bass-reflex enclosure. EBP = fs / Qes = 45 / 0.4

Sealed (Qtc 0.707)

Enclosure volume Vb
57.3 l
System resonance Fc
82 Hz
Cut-off frequency F3
82 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
117.2 l
Tuning frequency Fb
47 Hz
Cut-off frequency F3
47 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) 900
Sensitivity (dB) 98
Frequency from (Hz) 40
Frequency to (Hz) 4000
Abmessungen & Korb
Diameter 15
Voice coil (inch) 3.5
Mounting depth (mm) 229
Weight (kg) 5.1
Thiele-Small-Parameter
Re (Ω) 5.2
Le (mH) 0.46
Fs (Hz) 45
Qms 8.7
Qes 0.4
Qts 0.39
Vas (l) 131
Xmax (mm) 8.3
BL (Tm) 19.5
Mms (kg) 0.106
Sd (m²) 0.0881