Oberton 15NMB35

Subwoofer

Nominal diameter15″ / 388 mm
Resonance38.9 Hz
Q factor0.34
Sensitivity96.2 dB
Linear excursion± 6.8 mm
Program Power1200 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 96.2dB
  • Frequency response 45 - 3000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 38.9Hz
  • Mechanical quality factor QMS 8.88
  • Electrical quality factor QES 0.35
  • Total quality factor QTS 0.34

Large signal parameters

  • Maximum linear excursion xmax 6.8mm
  • Air volume displaced at xmax VD 560cm³
  • Power handling P 600W
  • Program power Pmax 1200W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.4Ω
  • Inductance (1kHz) LE 0.879mH
  • VC Diameter 88mm
  • Winding height HVC 19mm
  • Winding material Aluminium
  • Former material Kapton

Magnet

  • Flux density B 1.05T
  • Force factor Bl 18.5N/A
  • Motor constant Bl/√RE 7.98N/√W
  • Air gap height HAG 11mm
  • Material Neodymium

Diaphragm

  • Effective diameter 325mm
  • Effective area SD 830cm²
  • Moving mass MMS 90.5g
  • Moving mass (without air load) MMD 73.6g
  • Material Paper with glassfiber

Suspensions

  • Stiffness KMS 5.41N/mm
  • Compliance CMS 185µm/N
  • Equivalent volume to the compliance VAS 177L
  • Mechanical resistance RMS 2.49N·s/m

Dimensions

  • Nominal diameter 15
  • 388mm
  • Overall diameter 388mm
  • Baffle cutout diameter 355mm
  • Overall depth 175mm
  • Volume occupied by the driver (estimated) 3.2L
  • Net weight 5.32kg
  • Frame material Die Cast Aluminium
Oberton 15NMB35 SPL
Oberton 15NMB35 Dimensions

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