Oberton 10M250

Mid-range

Nominal diameter10″ / 262 mm
Resonance76.7 Hz
Q factor0.28
Sensitivity97.2 dB
Linear excursion± 2.8 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
  • Sensitivity (1W, 1m, infinite baffle) SPL1W 97.2dB
  • Frequency response 70 - 5000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 76.7Hz
  • Mechanical quality factor QMS 14.62
  • Electrical quality factor QES 0.28
  • Total quality factor QTS 0.28

Large signal parameters

  • Maximum linear excursion xmax 2.8mm
  • Air volume displaced at xmax VD 87cm³
  • Power handling P 250W
  • Program power Pmax 500W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 6.1Ω
  • Inductance (1kHz) LE 0.6mH
  • VC Diameter 64mm
  • Winding height HVC 10mm
  • Winding material Aluminium
  • Former material Kapton

Magnet

  • Flux density B 1.4T
  • Force factor Bl 16.6N/A
  • Motor constant Bl/√RE 6.73N/√W
  • Air gap height HAG 9mm
  • Material Ferrite

Diaphragm

  • Effective diameter 201mm
  • Effective area SD 317cm²
  • Moving mass MMS 26.8g
  • Moving mass (without air load) MMD 22.5g
  • Material Paper

Suspensions

  • Stiffness KMS 6.21N/mm
  • Compliance CMS 161µm/N
  • Equivalent volume to the compliance VAS 23.1L
  • Mechanical resistance RMS 0.88N·s/m

Dimensions

  • Nominal diameter 10
  • 262mm
  • Overall diameter 263mm
  • Baffle cutout diameter 225mm
  • Overall depth 123mm
  • Volume occupied by the driver (estimated) 2.3L
  • Net weight 6.6kg
  • Frame material Die cast aluminium
Oberton 10M250 SPL
Oberton 10M250 Dimensions

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