EUPHORIA ERW12D4

2x4Ω

Subwoofer

Nominal diameter12″ / 322 mm
Resonance30.5 Hz
Q factor0.57
Sensitivity84.6 dB
Program Power1500 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 30.5Hz
  • Mechanical quality factor QMS 4.29
  • Electrical quality factor QES 0.66
  • Total quality factor QTS 0.57

Large signal parameters

  • Power handling P 750W
  • Program power Pmax 1500W
  • Peak power Ppeak 1500W

Voice Coil

  • Nominal impedance Z 2 x 4Ω
  • DC resistance (in series) RE 6.8Ω
  • Inductance (1kHz, in series, estimated) LE 6mH
  • Former material KSV

Magnet

  • Force factor (in series) Bl 22.4N/A
  • Motor constant Bl/√RE 8.59N/√W

Diaphragm

  • Effective diameter 255mm
  • Effective area SD 511cm²
  • Moving mass MMS 253g
  • Moving mass (without air load) MMD 244g
  • Material Polypropylene

Suspensions

  • Stiffness KMS 9.28N/mm
  • Compliance CMS 108µm/N
  • Equivalent volume to the compliance VAS 39.9L
  • Mechanical resistance RMS 11.3N·s/m
  • Surround material Foam

Dimensions

  • Nominal diameter 12
  • 322mm
  • Overall diameter 322mm
  • Baffle cutout diameter 282mm
  • Mounting depth 170mm
  • Volume occupied by the driver (estimated) 2.8L
  • Frame material Die-Cast

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