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18SOUND 15ND940

18SOUND 15ND940

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18SOUND (Eighteen Sound) 15ND940 — 15" / 15 inch · Woofer/Midrange (WM) · Subwoofer / Bass · Neodymium
3" voice coil · 4/8/16 Ω
Part no.: 42A-CHS-TT-18S-0051

305.00 € 305.0 EUR 305.00 €

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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 15ND940 — 15" · Woofer

600 W AES · 99 dB Sensitivity · Frequency range 38 Hz – 3500 Hz

Technical data

  • Diameter: 15 "
  • Voice coil: 3 "
  • Power handling: 600 W AES
  • Sensitivity: 99 dB
  • Impedance: 8 Ω
  • Magnet: Neo
  • Weight: 4.7 kg
  • Mounting depth: 184 mm
  • Frequency range: 38 – 3500 Hz

Datasheet (PDF) · Manufacturer page

Series: ND · Part no.: 42A-CHS-TT-18S-0051

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs38 Hz
Total Q Qts0.28
Electrical Q Qes0.29
Mechanical Q Qms7.5
Equivalent volume Vas174.0 l
Moving mass Mms108.0 g
Cone area Sd881 cm²
Linear excursion Xmax9.5 mm
Force factor BL21.9 Tm
DC resistance Re5.4 Ω
Voice coil inductance Le0.7 mH

Enclosure suggestion

The EBP of 131 suggests a bass-reflex enclosure. EBP = fs / Qes = 38 / 0.29

Sealed (Qtc 0.707)

Enclosure volume Vb
32.4 l
System resonance Fc
96 Hz
Cut-off frequency F3
96 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
52.1 l
Tuning frequency Fb
55 Hz
Cut-off frequency F3
65 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 ND
Magnet Neo
Impedance (Ω) 8
Power handling (W) 600
Sensitivity (dB) 99
Frequency from (Hz) 38
Frequency to (Hz) 3500
Abmessungen & Korb
Diameter 15
Voice coil (inch) 3
Mounting depth (mm) 184
Weight (kg) 4.7
Thiele-Small-Parameter
Re (Ω) 5.4
Le (mH) 0.7
Fs (Hz) 38
Qms 7.5
Qes 0.29
Qts 0.28
Vas (l) 174
Xmax (mm) 9.5
BL (Tm) 21.9
Mms (kg) 0.108
Sd (m²) 0.0881