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18SOUND 15NMB1000

18SOUND 15NMB1000

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18SOUND (Eighteen Sound) 15NMB1000 — 15" / 15 inch · Midrange with Lower Midrange (ML) · Midrange · Neodymium
4" voice coil · 8 Ω
Part no.: 42A-CHS-MT-18S-0010

368.00 € 368.0 EUR 368.00 €

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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 15NMB1000 — 15" · Midrange Driver

900 W AES · 101 dB Sensitivity · Frequency range 45 Hz – 2500 Hz

Technical data

  • Diameter: 15 "
  • Voice coil: 4 "
  • Power handling: 900 W AES
  • Sensitivity: 101 dB
  • Impedance: 8 Ω
  • Magnet: Neo
  • Weight: 6 kg
  • Mounting depth: 174 mm
  • Frequency range: 45 – 2500 Hz

Datasheet (PDF) · Manufacturer page

Series: NMB · Part no.: 42A-CHS-MT-18S-0010

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs46 Hz
Total Q Qts0.24
Electrical Q Qes0.24
Mechanical Q Qms8.3
Equivalent volume Vas124.0 l
Moving mass Mms100.0 g
Cone area Sd855 cm²
Linear excursion Xmax6.5 mm
Force factor BL25.2 Tm
DC resistance Re5.3 Ω
Voice coil inductance Le0.89 mH

Enclosure suggestion

The EBP of 192 suggests a bass-reflex enclosure. EBP = fs / Qes = 46 / 0.24

Sealed (Qtc 0.707)

Enclosure volume Vb
16.2 l
System resonance Fc
136 Hz
Cut-off frequency F3
136 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
22.3 l
Tuning frequency Fb
78 Hz
Cut-off frequency F3
98 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 Mid Frequency
Series NMB
Magnet Neo
Impedance (Ω) 8
Power handling (W) 900
Sensitivity (dB) 101
Frequency from (Hz) 45
Frequency to (Hz) 2500
Abmessungen & Korb
Diameter 15
Voice coil (inch) 4
Mounting depth (mm) 174
Weight (kg) 6
Thiele-Small-Parameter
Re (Ω) 5.3
Le (mH) 0.89
Fs (Hz) 46
Qms 8.3
Qes 0.24
Qts 0.24
Vas (l) 124
Xmax (mm) 6.5
BL (Tm) 25.2
Mms (kg) 0.1
Sd (m²) 0.0855