B&C Speaker 12TBX100

Subwoofer

Nominal diameter12″ / 320 mm
Resonance42 Hz
Q factor0.26
Sensitivity93.1 dB
Linear excursion± 9 mm
Program Power2000 W
Ω°0102030405060101001 00010 000-180-120-60060120180Electrical ImpedanceElectrical Phase
mm05101520101001 00010 000Diaphragm ExcursionMaximum Linear Excursion
m/s0246810101001 00010 000Diaphragm Velocity
dB60708090100110120101001 00010 000SPL (1W, 1m, on axis)Maximum SPL
°-180-120-60060120180101001 00010 000Acoustical phase (1m, on axis)
ms051015202530101001 00010 000Group Delay (1m, on axis)
00.51-205101520Step response
-1-0.500.51-2010203040Response to a tone burst of Hz with cycles
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 93.1dB
  • Frequency response 45 - 1500Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 42Hz
  • Mechanical quality factor QMS 6.90
  • Electrical quality factor QES 0.27
  • Total quality factor QTS 0.26

Large signal parameters

  • Maximum linear excursion xmax 9mm
  • Air volume displaced at xmax VD 478cm³
  • Power handling P 1000W
  • Program power Pmax 2000W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.1Ω
  • Inductance (1kHz) LE 1.6mH
  • VC Diameter 100mm
  • Winding height HVC 25mm
  • Winding material Copper
  • Former material Glass Fibre

Magnet

  • Flux density B 1.1T
  • Force factor Bl 25.5N/A
  • Motor constant Bl/√RE 11.3N/√W
  • Air gap height HAG 12mm
  • Material Ferrite

Diaphragm

  • Effective diameter 260mm
  • Effective area SD 531cm²
  • Moving mass MMS 119g
  • Moving mass (without air load) MMD 110g
  • Material Waterproof Both Sides

Suspensions

  • Stiffness KMS 9.09N/mm
  • Compliance CMS 110µm/N
  • Equivalent volume to the compliance VAS 37.5L
  • Mechanical resistance RMS 4.55N·s/m
  • Spider material Silicone

Dimensions

  • Nominal diameter 12
  • 320mm
  • Overall diameter 319mm
  • Baffle cutout diameter 281mm
  • Overall depth 135mm
  • Flange thickness 13mm
  • Mounting depth 122mm
  • Volume occupied by the driver 4.2L
  • Net weight 11.8kg
B&C Speaker 12TBX100 Impedance
B&C Speaker 12TBX100 SPL
B&C Speaker 12TBX100 Dimensions

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