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18SOUND 8MB400

18SOUND 8MB400

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18SOUND (Eighteen Sound) 8MB400 — 8" / 8 inch · Woofer/Midrange (WM) · Bass · Ferrite
2" voice coil · 8 Ω
Part no.: 42A-CHS-TT-18S-0030

148.00 € 148.0 EUR 148.00 €

Price on request

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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 8MB400 — 8" · Woofer

280 W AES · 95 dB Sensitivity · Frequency range 55 Hz – 5200 Hz

Technical data

  • Diameter: 8 "
  • Voice coil: 2 "
  • Power handling: 280 W AES
  • Sensitivity: 95 dB
  • Impedance: 8 Ω
  • Magnet: Ferrite
  • Weight: 3.6 kg
  • Mounting depth: 99 mm
  • Frequency range: 55 – 5200 Hz

Datasheet (PDF) · Manufacturer page

Series: MB · Part no.: 42A-CHS-TT-18S-0030

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs64 Hz
Total Q Qts0.38
Electrical Q Qes0.43
Mechanical Q Qms3.23
Equivalent volume Vas23.9 l
Moving mass Mms18.0 g
Cone area Sd227 cm²
Linear excursion Xmax5.8 mm
Force factor BL9.3 Tm
DC resistance Re5 Ω
Voice coil inductance Le0.96 mH

Enclosure suggestion

The EBP of 149 suggests a bass-reflex enclosure. EBP = fs / Qes = 64 / 0.43

Sealed (Qtc 0.707)

Enclosure volume Vb
9.7 l
System resonance Fc
119 Hz
Cut-off frequency F3
119 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
19.6 l
Tuning frequency Fb
68 Hz
Cut-off frequency F3
70 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) 280
Sensitivity (dB) 95
Frequency from (Hz) 55
Frequency to (Hz) 5200
Abmessungen & Korb
Diameter 8
Voice coil (inch) 2
Mounting depth (mm) 99
Weight (kg) 3.6
Thiele-Small-Parameter
Re (Ω) 5
Le (mH) 0.96
Fs (Hz) 64
Qms 3.23
Qes 0.43
Qts 0.38
Vas (l) 23.9
Xmax (mm) 5.8
BL (Tm) 9.3
Mms (kg) 0.018
Sd (m²) 0.0227