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18SOUND 15ND730

18SOUND 15ND730

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18SOUND (Eighteen Sound) 15ND730 — 15" / 15 inch · Woofer/Midrange (WM) · Subwoofer / Bass · Neodymium
3" voice coil · 8 Ω
Part no.: 42A-CHS-TT-18S-0055

328.00 € 328.0 EUR 328.00 €

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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 15ND730 — 15" · Woofer

400 W AES · 99 dB Sensitivity · Frequency range 44 Hz – 4000 Hz

Technical data

  • Diameter: 15 "
  • Voice coil: 3 "
  • Power handling: 400 W AES
  • Sensitivity: 99 dB
  • Impedance: 8 Ω
  • Magnet: Neo
  • Weight: 3.9 kg
  • Mounting depth: 169 mm
  • Frequency range: 44 – 4000 Hz

Datasheet (PDF) · Manufacturer page

Series: ND · Part no.: 42A-CHS-TT-18S-0055

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs44 Hz
Total Q Qts0.29
Electrical Q Qes0.3
Mechanical Q Qms8.1
Equivalent volume Vas156.0 l
Moving mass Mms86.0 g
Cone area Sd900 cm²
Linear excursion Xmax6.5 mm
Force factor BL21 Tm
DC resistance Re5.5 Ω
Voice coil inductance Le1.35 mH

Enclosure suggestion

The EBP of 147 suggests a bass-reflex enclosure. EBP = fs / Qes = 44 / 0.3

Sealed (Qtc 0.707)

Enclosure volume Vb
31.6 l
System resonance Fc
107 Hz
Cut-off frequency F3
107 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
52.5 l
Tuning frequency Fb
62 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 ND
Magnet Neo
Impedance (Ω) 8
Power handling (W) 400
Sensitivity (dB) 99
Frequency from (Hz) 44
Frequency to (Hz) 4000
Abmessungen & Korb
Diameter 15
Voice coil (inch) 3
Mounting depth (mm) 169
Weight (kg) 3.9
Thiele-Small-Parameter
Re (Ω) 5.5
Le (mH) 1.35
Fs (Hz) 44
Qms 8.1
Qes 0.3
Qts 0.29
Vas (l) 156
Xmax (mm) 6.5
BL (Tm) 21
Mms (kg) 0.086
Sd (m²) 0.09