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18SOUND 12ND730

18SOUND 12ND730

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18SOUND (Eighteen Sound) 12ND730 — 12" / 12 inch · Woofer/Midrange (WM) · Bass · Neodymium
3" voice coil · 8 Ω
Part no.: 42A-CHS-TT-18S-0066

325.00 € 325.0 EUR 325.00 €

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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 12ND730 — 12" · Woofer

400 W AES · 98 dB Sensitivity · Frequency range 53 Hz – 5000 Hz

Technical data

  • Diameter: 12 "
  • Voice coil: 3 "
  • Power handling: 400 W AES
  • Sensitivity: 98 dB
  • Impedance: 8 Ω
  • Magnet: Neo
  • Weight: 3.8 kg
  • Mounting depth: 132 mm
  • Frequency range: 53 – 5000 Hz

Datasheet (PDF) · Manufacturer page

Series: ND · Part no.: 42A-CHS-TT-18S-0066

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs45 Hz
Total Q Qts0.23
Electrical Q Qes0.24
Mechanical Q Qms5.13
Equivalent volume Vas90.0 l
Moving mass Mms55.0 g
Cone area Sd531 cm²
Linear excursion Xmax6.5 mm
Force factor BL19.2 Tm
DC resistance Re5.6 Ω
Voice coil inductance Le1.73 mH

Enclosure suggestion

The EBP of 188 suggests a bass-reflex enclosure. EBP = fs / Qes = 45 / 0.24

Sealed (Qtc 0.707)

Enclosure volume Vb
10.7 l
System resonance Fc
138 Hz
Cut-off frequency F3
138 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
14.1 l
Tuning frequency Fb
80 Hz
Cut-off frequency F3
102 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) 98
Frequency from (Hz) 53
Frequency to (Hz) 5000
Abmessungen & Korb
Diameter 12
Voice coil (inch) 3
Mounting depth (mm) 132
Weight (kg) 3.8
Thiele-Small-Parameter
Re (Ω) 5.6
Le (mH) 1.73
Fs (Hz) 45
Qms 5.13
Qes 0.24
Qts 0.23
Vas (l) 90
Xmax (mm) 6.5
BL (Tm) 19.2
Mms (kg) 0.055
Sd (m²) 0.0531