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18SOUND 8MB500

18SOUND 8MB500

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18SOUND (Eighteen Sound) 8MB500 — 8" / 8 inch · Woofer/Midrange (WM) · Bass · Ferrite
2" voice coil · 4/8/16 Ω
Part no.: 42A-CHS-TT-18S-0029

145.00 € 145.0 EUR 145.00 €

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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 8MB500 — 8" · Woofer

280 W AES · 95 dB Sensitivity · Frequency range 60 Hz – 4500 Hz

Technical data

  • Diameter: 8 "
  • Voice coil: 2 "
  • Power handling: 280 W AES
  • Sensitivity: 95 dB
  • Impedance: 16 Ω
  • Magnet: Ferrite
  • Weight: 3.4 kg
  • Mounting depth: 99 mm
  • Frequency range: 60 – 4500 Hz

Datasheet (PDF) · Manufacturer page

Series: MB · Part no.: 42A-CHS-TT-18S-0029

Thiele-Small parameters

Nominal impedance16 Ω
Resonance frequency fs73 Hz
Total Q Qts0.5
Electrical Q Qes0.58
Mechanical Q Qms3.44
Equivalent volume Vas21.3 l
Moving mass Mms16.0 g
Cone area Sd230 cm²
Linear excursion Xmax6 mm
Force factor BL11 Tm
DC resistance Re9.8 Ω
Voice coil inductance Le0.86 mH

Enclosure suggestion

The EBP of 126 suggests a bass-reflex enclosure. EBP = fs / Qes = 73 / 0.58

Sealed (Qtc 0.707)

Enclosure volume Vb
21.3 l
System resonance Fc
103 Hz
Cut-off frequency F3
103 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
43.3 l
Tuning frequency Fb
59 Hz
Cut-off frequency F3
53 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.

Specifications

Allgemein
Manufacturer 18SOUND
Category Low Frequency
Series MB
Magnet Ferrite
Impedance (Ω) 16
Power handling (W) 280
Sensitivity (dB) 95
Frequency from (Hz) 60
Frequency to (Hz) 4500
Abmessungen & Korb
Diameter 8
Voice coil (inch) 2
Mounting depth (mm) 99
Weight (kg) 3.4
Thiele-Small-Parameter
Re (Ω) 9.8
Le (mH) 0.86
Fs (Hz) 73
Qms 3.44
Qes 0.58
Qts 0.5
Vas (l) 21.3
Xmax (mm) 6
BL (Tm) 11
Mms (kg) 0.016
Sd (m²) 0.023