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18SOUND 12MB700

18SOUND 12MB700

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18SOUND (Eighteen Sound) 12MB700 — 12" / 12 inch · Midrange with Lower Midrange (ML) · Midrange · Ferrite
3" voice coil · 8/16 Ω
Part no.: 42A-CHS-MT-18S-0006

245.00 € 245.0 EUR 245.00 €

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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 12MB700 — 12" · Midrange Driver

450 W AES · 100.5 dB Sensitivity · Frequency range 60 Hz – 5000 Hz

Technical data

  • Diameter: 12 "
  • Voice coil: 3 "
  • Power handling: 450 W AES
  • Sensitivity: 100.5 dB
  • Impedance: 16 Ω
  • Magnet: Ferrite
  • Weight: 8.3 kg
  • Mounting depth: 147 mm
  • Frequency range: 60 – 5000 Hz

Datasheet (PDF) · Manufacturer page

Series: MB · Part no.: 42A-CHS-MT-18S-0006

Thiele-Small parameters

Nominal impedance16 Ω
Resonance frequency fs46 Hz
Total Q Qts0.25
Electrical Q Qes0.26
Mechanical Q Qms7.27
Equivalent volume Vas100.0 l
Moving mass Mms46.0 g
Cone area Sd531 cm²
Linear excursion Xmax4.5 mm
Force factor BL22.1 Tm
DC resistance Re9.5 Ω
Voice coil inductance Le1.84 mH

Enclosure suggestion

The EBP of 177 suggests a bass-reflex enclosure. EBP = fs / Qes = 46 / 0.26

Sealed (Qtc 0.707)

Enclosure volume Vb
14.3 l
System resonance Fc
130 Hz
Cut-off frequency F3
130 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
20.6 l
Tuning frequency Fb
75 Hz
Cut-off frequency F3
92 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 MB
Magnet Ferrite
Impedance (Ω) 16
Power handling (W) 450
Sensitivity (dB) 100.5
Frequency from (Hz) 60
Frequency to (Hz) 5000
Abmessungen & Korb
Diameter 12
Voice coil (inch) 3
Mounting depth (mm) 147
Weight (kg) 8.3
Thiele-Small-Parameter
Re (Ω) 9.5
Le (mH) 1.84
Fs (Hz) 46
Qms 7.27
Qes 0.26
Qts 0.25
Vas (l) 100
Xmax (mm) 4.5
BL (Tm) 22.1
Mms (kg) 0.046
Sd (m²) 0.0531