GRS 12SFPC-B

W
B

Woofer

Nominal diameter12″ / 336 mm
Resonance36 Hz
Q factor0.83
Sensitivity91.4 dB
Linear excursion± 4.3 mm
Program power160 W
GRS 12SFPC-B WooferGRS 12SFPC-B WooferGRS 12SFPC-B Woofer
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
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

Specifications

  • Sensitivity (1W, 1m, infinite baffle) SPL1W 91.4dB
  • Frequency response 35 - 3000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 36Hz
  • Mechanical quality factor QMS 4.11
  • Electrical quality factor QES 1.04
  • Total quality factor QTS 0.83

Large signal parameters

  • Maximum linear excursion (one way) xmax 4.3mm
  • Air volume displaced at xmax VD 215cm³
  • Power handling P 80W
  • Program power Pmax 160W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.9Ω
  • Inductance (1kHz) LE 0.4mH
  • VC Diameter 38mm

Magnet

  • Force factor Bl 7.3N/A
  • Motor constant Bl/√RE 3.01N/√W
  • Diameter 110mm

Diaphragm

  • Effective diameter 252mm
  • Effective area SD 500cm²
  • Moving mass (including air load) MMS 40.9g
  • Moving mass MMD 32.3g
  • Material Treated paper

Suspensions

  • Stiffness KMS 2.13N/mm
  • Compliance CMS 470µm/N
  • Equivalent volume to the compliance VAS 166L
  • Mechanical resistance RMS 2.25N·s/m
  • Surround material Foam

Dimensions

  • Nominal diameter 12″
  • 336mm
  • Overall diameter 336mm
  • Baffle cutout diameter 282mm
  • Overall depth 126mm
  • Flange thickness 3mm
  • Mounting depth 120mm
  • Volume occupied by the driver (estimated) 2.3L
  • Frame material Stamped steel
Impedance
SPL
GRS 12SFPC-B Impedance
GRS 12SFPC-B SPL
GRS 12SFPC-B Dimensions
PDF fileDatasheet

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