HiFonics ELITE HEW8D4S

2x4Ω

Shallow Subwoofer

Nominal diameter8″ / 212 mm
Resonance50 Hz
Q factor1.56
Sensitivity84.6 dB
Linear excursion± 8.2 mm
Program Power500 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 84.6dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 50Hz
  • Mechanical quality factor QMS 8.14
  • Electrical quality factor QES 1.93
  • Total quality factor QTS 1.56

Large signal parameters

  • Maximum linear excursion (one way) xmax 8.2mm
  • Air volume displaced at xmax VD 169cm³
  • Power handling P 250W
  • Program power Pmax 500W
  • Peak power Ppeak 500W

Voice Coil

  • Nominal impedance Z 2 x 4Ω
  • DC resistance (in series) RE 7.1Ω
  • Inductance (1kHz, in series, estimated) LE 2.32mH

Magnet

  • Force factor (in series) Bl 8.27N/A
  • Motor constant Bl/√RE 3.1N/√W

Diaphragm

  • Effective diameter 162mm
  • Effective area SD 206cm²
  • Moving mass MMS 56.5g
  • Moving mass (without air load) MMD 54.3g

Suspensions

  • Stiffness KMS 5.5N/mm
  • Compliance CMS 182µm/N
  • Equivalent volume to the compliance VAS 10.7L
  • Mechanical resistance RMS 2.18N·s/m

Dimensions

  • Nominal diameter 8
  • 212mm
  • Overall diameter 212mm
  • Baffle cutout diameter 184mm
  • Overall depth 84mm
  • Flange thickness 17mm
  • Mounting depth 67mm
  • Volume occupied by the driver (estimated) 0.71L

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