Jensen Vintage Ceramic C12Q

16Ω

Guitar Speaker

Nominal diameter12″ / 306 mm
Resonance87.5 Hz
Q factor2.23
Sensitivity97.3 dB
Linear excursion± 1.5 mm
Program Power70 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 97.3dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 87.5Hz
  • Mechanical quality factor QMS 12.95
  • Electrical quality factor QES 2.69
  • Total quality factor QTS 2.23

Large signal parameters

  • Maximum linear excursion xmax 1.5mm
  • Air volume displaced at xmax VD 74cm³
  • Power handling P 35W
  • Program power Pmax 70W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 6.0Ω
  • Inductance (1kHz) LE 0.63mH
  • VC Diameter 32mm
  • Winding height HVC 9mm
  • Winding material Copper
  • Former material Epotex

Magnet

  • Flux density B 0.92T
  • Force factor Bl 6.03N/A
  • Motor constant Bl/√RE 2.46N/√W
  • Air gap height HAG 6mm
  • Weight 0.426kg
  • Material Ferrite

Diaphragm

  • Effective diameter 250mm
  • Effective area SD 491cm²
  • Moving mass MMS 29.7g
  • Moving mass (without air load) MMD 21.9g
  • Material Paper

Suspensions

  • Stiffness KMS 9.01N/mm
  • Compliance CMS 111µm/N
  • Equivalent volume to the compliance VAS 38L
  • Mechanical resistance RMS 1.26N·s/m
  • Surround material Integrated Paper

Dimensions

  • Nominal diameter 12
  • 306mm
  • Overall diameter 306mm
  • Volume occupied by the driver (estimated) 0.74L
  • Net weight 1.8kg
  • Frame material Pressed Sheet
Jensen C12Q SPL & Impedance
Jensen C12Q Dimensions

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fS90.5 Hz
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