Eminence LAB12C

Subwoofer

Nominal diameter12″ / 305 mm
Resonance23 Hz
Q factor0.33
Sensitivity88.2 dB
Linear excursion± 13 mm
Program Power1000 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 88.2dB
  • Frequency response 25 - 100Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 23Hz
  • Mechanical quality factor QMS 11.70
  • Electrical quality factor QES 0.34
  • Total quality factor QTS 0.33

Large signal parameters

  • Maximum linear excursion xmax 13mm
  • Maximum excursion before damage xlim 22mm
  • Air volume displaced at xmax VD 659cm³
  • Power handling P 500W
  • Program power Pmax 1000W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.1Ω
  • Inductance (1kHz) LE 1.09mH
  • VC Diameter 63.5mm
  • Winding material Copper
  • Former material Polyimide

Magnet

  • Force factor Bl 13.4N/A
  • Motor constant Bl/√RE 7.58N/√W
  • Air gap height HAG 9.5mm
  • Weight 4.536kg
  • Material Ferrite

Diaphragm

  • Effective diameter 254mm
  • Effective area SD 507cm²
  • Moving mass MMS 136g
  • Moving mass (without air load) MMD 128g
  • Material Kevlar-reinforced paper

Suspensions

  • Stiffness KMS 2.78N/mm
  • Compliance CMS 360µm/N
  • Equivalent volume to the compliance VAS 128L
  • Mechanical resistance RMS 1.68N·s/m
  • Surround material Foam

Dimensions

  • Nominal diameter 12
  • 305mm
  • Overall diameter 313mm
  • Baffle cutout diameter 280mm
  • Overall depth 164mm
  • Volume occupied by the driver 3.09L
  • Net weight 9.979kg
  • Frame material Die-cast Aluminium
Eminence LAB12C SPL & Impedance


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