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18SOUND 12NTLW3500

18SOUND 12NTLW3500

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18SOUND (Eighteen Sound) 12NTLW3500 — 12" / 12 inch · Woofer/Midrange (WM) · Bass · Neodymium · Dual-Gap
2x3.5" voice coil · 4/8/16 Ω
Part no.: 42A-CHS-TT-18S-0059

393.00 € 393.0 EUR 393.00 €

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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 12NTLW3500 — 12" · Woofer

900 W AES · 97 dB Sensitivity · Frequency range 50 Hz – 3000 Hz

Technical data

  • Diameter: 12 "
  • Voice coil: 3.5 "
  • Power handling: 900 W AES
  • Sensitivity: 97 dB
  • Impedance: 8 Ω
  • Magnet: Neo
  • Weight: 4.7 kg
  • Mounting depth: 193 mm
  • Frequency range: 50 – 3000 Hz

Datasheet (PDF) · Manufacturer page

Series: NTLW · Part no.: 42A-CHS-TT-18S-0059

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs53 Hz
Total Q Qts0.33
Electrical Q Qes0.35
Mechanical Q Qms8
Equivalent volume Vas45.0 l
Moving mass Mms80.0 g
Cone area Sd531 cm²
Linear excursion Xmax8.3 mm
Force factor BL19.5 Tm
DC resistance Re5.1 Ω
Voice coil inductance Le0.46 mH

Enclosure suggestion

The EBP of 151 suggests a bass-reflex enclosure. EBP = fs / Qes = 53 / 0.35

Sealed (Qtc 0.707)

Enclosure volume Vb
12.5 l
System resonance Fc
114 Hz
Cut-off frequency F3
114 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
23.2 l
Tuning frequency Fb
65 Hz
Cut-off frequency F3
71 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) 97
Frequency from (Hz) 50
Frequency to (Hz) 3000
Abmessungen & Korb
Diameter 12
Voice coil (inch) 3.5
Mounting depth (mm) 193
Weight (kg) 4.7
Thiele-Small-Parameter
Re (Ω) 5.1
Le (mH) 0.46
Fs (Hz) 53
Qms 8
Qes 0.35
Qts 0.33
Vas (l) 45
Xmax (mm) 8.3
BL (Tm) 19.5
Mms (kg) 0.08
Sd (m²) 0.0531