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18SOUND 15MB650

18SOUND 15MB650

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18SOUND (Eighteen Sound) 15MB650 — 15" / 15 inch · Woofer/Midrange (WM) · Subwoofer / Bass · Ferrite
3" voice coil · 8 Ω
Part no.: 42A-CHS-TT-18S-0020

285.01 € 285.01 EUR 285.01 €

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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 15MB650 — 15" · Woofer

400 W AES · 101.5 dB Sensitivity · Frequency range 50 Hz – 4800 Hz

Technical data

  • Diameter: 15 "
  • Voice coil: 3 "
  • Power handling: 400 W AES
  • Sensitivity: 101.5 dB
  • Impedance: 8 Ω
  • Magnet: Ferrite
  • Weight: 8.3 kg
  • Mounting depth: 167 mm
  • Frequency range: 50 – 4800 Hz

Datasheet (PDF) · Manufacturer page

Series: MB · Part no.: 42A-CHS-TT-18S-0020

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs40 Hz
Total Q Qts0.26
Electrical Q Qes0.27
Mechanical Q Qms3.95
Equivalent volume Vas210.0 l
Moving mass Mms77.0 g
Cone area Sd900 cm²
Linear excursion Xmax4 mm
Force factor BL20 Tm
DC resistance Re5.5 Ω
Voice coil inductance Le1.36 mH

Enclosure suggestion

The EBP of 148 suggests a bass-reflex enclosure. EBP = fs / Qes = 40 / 0.27

Sealed (Qtc 0.707)

Enclosure volume Vb
32.8 l
System resonance Fc
109 Hz
Cut-off frequency F3
109 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
49.3 l
Tuning frequency Fb
63 Hz
Cut-off frequency F3
76 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 MB
Magnet Ferrite
Impedance (Ω) 8
Power handling (W) 400
Sensitivity (dB) 101.5
Frequency from (Hz) 50
Frequency to (Hz) 4800
Abmessungen & Korb
Diameter 15
Voice coil (inch) 3
Mounting depth (mm) 167
Weight (kg) 8.3
Thiele-Small-Parameter
Re (Ω) 5.5
Le (mH) 1.36
Fs (Hz) 40
Qms 3.95
Qes 0.27
Qts 0.26
Vas (l) 210
Xmax (mm) 4
BL (Tm) 20
Mms (kg) 0.077
Sd (m²) 0.09