ETON Arcosia 7-308

Subwoofer

Nominal diameter8″ / 181 mm
Resonance32 Hz
Q factor0.31
Sensitivity87.9 dB
Linear excursion± 9.5 mm
Program Power200 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 87.9dB
  • Frequency response 50 - 3000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 32Hz
  • Mechanical quality factor QMS 6.33
  • Electrical quality factor QES 0.32
  • Total quality factor QTS 0.31

Large signal parameters

  • Maximum linear excursion xmax 9.5mm
  • Air volume displaced at xmax VD 130cm³
  • Power handling P 100W
  • Program power Pmax 200W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 6.6Ω
  • Inductance (1kHz) LE 0.87mH
  • VC Diameter 32mm
  • Winding material Copper
  • Former material Glassfibre

Magnet

  • Flux density B 1.26T
  • Force factor Bl 8.2N/A
  • Motor constant Bl/√RE 3.19N/√W
  • Air gap height HAG 6mm
  • Diameter 121mm
  • Height 20mm
  • Material Ferrite

Diaphragm

  • Effective diameter 132mm
  • Effective area SD 137cm²
  • Moving mass MMS 16g
  • Moving mass (without air load) MMD 14.7g

Suspensions

  • Stiffness KMS 0.813N/mm
  • Compliance CMS 1230µm/N
  • Equivalent volume to the compliance VAS 32.5L
  • Mechanical resistance RMS 0.62N·s/m

Dimensions

  • Nominal diameter 8
  • 181mm
  • Overall diameter 181mm
  • Baffle cutout diameter 150mm
  • Overall depth 97mm
  • Flange thickness 6mm
  • Mounting depth 91mm
  • Volume occupied by the driver (estimated) 0.87L
  • Net weight 2.67kg
ETON 7-308 Impedance
ETON 7-308 SPL
ETON 7-308 Dimensions

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