AudioControl EPICX EPICX8 D4

2x2Ω
2x4Ω

Subwoofer

Nominal diameter8″ / 200 mm
Resonance47.6 Hz
Q factor0.62
Sensitivity84.2 dB
Linear excursion± 9.3 mm
Program Power600 W
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 84.2dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 47.6Hz
  • Mechanical quality factor QMS 6.02
  • Electrical quality factor QES 0.69
  • Total quality factor QTS 0.62

Large signal parameters

  • Maximum linear excursion (one way) xmax 9.3mm
  • Air volume displaced at xmax VD 193cm³
  • Power handling P 350W
  • Program power Pmax 600W

Voice Coil

  • Nominal impedance Z 2 x 4Ω
  • DC resistance (in series) RE 6.4Ω
  • Inductance (1kHz, in series) LE 4.4mH
  • VC Diameter 50mm

Magnet

  • Force factor (in series) Bl 16.3N/A
  • Motor constant Bl/√RE 6.44N/√W
  • Diameter 140mm
  • Height 25mm

Diaphragm

  • Effective diameter 163mm
  • Effective area SD 209cm²
  • Moving mass MMS 86.5g
  • Moving mass (without air load) MMD 84.2g
  • Material Non-pressed paper

Suspensions

  • Stiffness KMS 9.52N/mm
  • Compliance CMS 105µm/N
  • Equivalent volume to the compliance VAS 6.68L
  • Mechanical resistance RMS 4.76N·s/m
  • Surround material Composite foam

Dimensions

  • Nominal diameter 8
  • 200mm
  • Overall diameter 215mm
  • Baffle cutout diameter 177mm
  • Overall depth 124mm
  • Flange thickness 20mm
  • Mounting depth 104mm
  • Volume occupied by the driver (estimated) 1.2L
  • Frame material Steel

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