Dayton Audio CX120-8

Coaxial

Nominal diameter4″ / 121 mm
Resonance87.5 Hz
Q factor0.48
Sensitivity86.2 dB
Linear excursion± 3 mm
Program Power80 W
Discontinued
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply

Specifications

  • Sensitivity (1W, 1m, infinite baffle) SPL1W 86.2dB
  • Frequency response 90 - 20000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 87.5Hz
  • Mechanical quality factor QMS 2.89
  • Electrical quality factor QES 0.57
  • Total quality factor QTS 0.48

Large signal parameters

  • Maximum linear excursion xmax 3mm
  • Air volume displaced at xmax VD 16cm³
  • Power handling P 40W
  • Program power Pmax 80W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 6.2Ω
  • Inductance (1kHz) LE 0.63mH
  • VC Diameter 25.4mm
  • Winding material Copper Clad Aluminum
  • Former material Aluminum

Magnet

  • Force factor Bl 5.08N/A
  • Motor constant Bl/√RE 2.04N/√W
  • Material Ferrite

Diaphragm

  • Effective diameter 82mm
  • Effective area SD 52.5cm²
  • Moving mass MMS 4.82g
  • Moving mass (without air load) MMD 4.5g
  • Material Polypropylene

Suspensions

  • Stiffness KMS 1.31N/mm
  • Compliance CMS 765µm/N
  • Equivalent volume to the compliance VAS 3L
  • Mechanical resistance RMS 0.92N·s/m
  • Surround material Rubber

Dimensions

  • Nominal diameter 4
  • 121mm
  • Overall diameter 121mm
  • Baffle cutout diameter 110mm
  • Overall depth 98mm
  • Volume occupied by the driver (estimated) 0.41L
  • Frame material Cast Aluminium
Dayton Audio CX120-8 Impedance
Dayton Audio CX120-8 SPL
Dayton Audio CX120-8 Dimensions

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