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18SOUND 15ND930

18SOUND 15ND930

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18SOUND (Eighteen Sound) 15ND930 — 15" / 15 inch · Woofer/Midrange (WM) · Subwoofer / Bass · Neodymium
3" voice coil · 4/8/16 Ω
Part no.: 42A-CHS-TT-18S-0052

375.00 € 375.0 EUR 375.00 €

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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 15ND930 — 15" · Woofer

500 W AES · 98 dB Sensitivity · Frequency range 40 Hz – 4100 Hz

Technical data

  • Diameter: 15 "
  • Voice coil: 3 "
  • Power handling: 500 W AES
  • Sensitivity: 98 dB
  • Impedance: 8 Ω
  • Magnet: Neo
  • Weight: 4.7 kg
  • Mounting depth: 177 mm
  • Frequency range: 40 – 4100 Hz

Datasheet (PDF) · Manufacturer page

Series: ND · Part no.: 42A-CHS-TT-18S-0052

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs36 Hz
Total Q Qts0.22
Electrical Q Qes0.23
Mechanical Q Qms5.3
Equivalent volume Vas206.0 l
Moving mass Mms101.0 g
Cone area Sd850 cm²
Linear excursion Xmax7.5 mm
Force factor BL23.8 Tm
DC resistance Re5.5 Ω
Voice coil inductance Le1.61 mH

Enclosure suggestion

The EBP of 157 suggests a bass-reflex enclosure. EBP = fs / Qes = 36 / 0.23

Sealed (Qtc 0.707)

Enclosure volume Vb
22.1 l
System resonance Fc
116 Hz
Cut-off frequency F3
116 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
27.9 l
Tuning frequency Fb
67 Hz
Cut-off frequency F3
87 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) 500
Sensitivity (dB) 98
Frequency from (Hz) 40
Frequency to (Hz) 4100
Abmessungen & Korb
Diameter 15
Voice coil (inch) 3
Mounting depth (mm) 177
Weight (kg) 4.7
Thiele-Small-Parameter
Re (Ω) 5.5
Le (mH) 1.61
Fs (Hz) 36
Qms 5.3
Qes 0.23
Qts 0.22
Vas (l) 206
Xmax (mm) 7.5
BL (Tm) 23.8
Mms (kg) 0.101
Sd (m²) 0.085