ETON Symphony II 12-212/C8/62 HEX

Woofer

Nominal diameter12″ / 331 mm
Resonance23 Hz
Q factor0.31
Sensitivity90 dB
Linear excursion± 15.7 mm
Program Power400 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 90dB
  • Frequency response 25 - 500Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 23Hz
  • Mechanical quality factor QMS 7.15
  • Electrical quality factor QES 0.32
  • Total quality factor QTS 0.31

Large signal parameters

  • Maximum linear excursion (one way) xmax 15.7mm
  • Air volume displaced at xmax VD 809cm³
  • Power handling P 200W
  • Program power Pmax 400W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 6.2Ω
  • Inductance (1kHz) LE 1.57mH
  • VC Diameter 62mm
  • Winding material Copper
  • Former material Kapton

Magnet

  • Flux density B 1T
  • Force factor Bl 15.7N/A
  • Motor constant Bl/√RE 6.31N/√W
  • Air gap height HAG 10mm
  • Diameter 169mm
  • Height 24mm
  • Material Ferrite

Diaphragm

  • Effective diameter 256mm
  • Effective area SD 515cm²
  • Moving mass MMS 92.7g
  • Moving mass (without air load) MMD 83.9g

Suspensions

  • Stiffness KMS 2.13N/mm
  • Compliance CMS 470µm/N
  • Equivalent volume to the compliance VAS 176L
  • Mechanical resistance RMS 2.13N·s/m

Dimensions

  • Nominal diameter 12
  • 331mm
  • Overall diameter 331mm
  • Baffle cutout diameter 282mm
  • Overall depth 150mm
  • Flange thickness 9mm
  • Mounting depth 141mm
  • Volume occupied by the driver (estimated) 2.9L
  • Net weight 6.3kg
ETON 12-212/C8/62 HEX Impedance
ETON 12-212/C8/62 HEX SPL
ETON 12-212/C8/62 HEX Dimensions

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