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18SOUND 12W500

18SOUND 12W500

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18SOUND (Eighteen Sound) 12W500 — 12" / 12 inch · Midrange with Lower Midrange (ML) · Midrange · Ferrite
2.5" voice coil · 4/8 Ω
Part no.: 42A-CHS-MT-18S-0003

188.00 € 188.0 EUR 188.00 €

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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 12W500 — 12" · Midrange Driver

350 W AES · 99.5 dB Sensitivity · Frequency range 50 Hz – 6000 Hz

Technical data

  • Diameter: 12 "
  • Voice coil: 2.5 "
  • Power handling: 350 W AES
  • Sensitivity: 99.5 dB
  • Impedance: 8 Ω
  • Magnet: Ferrite
  • Weight: 5.2 kg
  • Mounting depth: 141 mm
  • Frequency range: 50 – 6000 Hz

Datasheet (PDF) · Manufacturer page

Series: W · Part no.: 42A-CHS-MT-18S-0003

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs46 Hz
Total Q Qts0.36
Electrical Q Qes0.38
Mechanical Q Qms6.02
Equivalent volume Vas123.0 l
Moving mass Mms36.5 g
Cone area Sd531 cm²
Linear excursion Xmax4 mm
Force factor BL12.1 Tm
DC resistance Re5.2 Ω
Voice coil inductance Le1.12 mH

Enclosure suggestion

The EBP of 121 suggests a bass-reflex enclosure. EBP = fs / Qes = 46 / 0.38

Sealed (Qtc 0.707)

Enclosure volume Vb
43.1 l
System resonance Fc
90 Hz
Cut-off frequency F3
90 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
84.5 l
Tuning frequency Fb
52 Hz
Cut-off frequency F3
54 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 W
Magnet Ferrite
Impedance (Ω) 8
Power handling (W) 350
Sensitivity (dB) 99.5
Frequency from (Hz) 50
Frequency to (Hz) 6000
Abmessungen & Korb
Diameter 12
Voice coil (inch) 2.5
Mounting depth (mm) 141
Weight (kg) 5.2
Thiele-Small-Parameter
Re (Ω) 5.2
Le (mH) 1.12
Fs (Hz) 46
Qms 6.02
Qes 0.38
Qts 0.36
Vas (l) 123
Xmax (mm) 4
BL (Tm) 12.1
Mms (kg) 0.0365
Sd (m²) 0.0531