GRS 12PF-8

8Ω

Woofer

Nominal diameter12″ / 303 mm
Resonance38 Hz
Q factor1.93
Sensitivity90.6 dB
Linear excursion± 3.5 mm
Program power240 W
GRS 12PF-8 WooferGRS 12PF-8 WooferGRS 12PF-8 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 90.6dB
  • Frequency response 35 - 5000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 38Hz
  • Mechanical quality factor QMS 6.49
  • Electrical quality factor QES 2.76
  • Total quality factor QTS 1.93

Large signal parameters

  • Maximum linear excursion (one way) xmax 3.5mm
  • Air volume displaced at xmax VD 184cm³
  • Power handling P 120W
  • Program power Pmax 240W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 7.4Ω
  • Inductance (1kHz) LE 1.2mH
  • VC Diameter 38mm

Magnet

  • Force factor Bl 6.3N/A
  • Motor constant Bl/√RE 2.32N/√W
  • Diameter 100mm

Diaphragm

  • Effective diameter 258mm
  • Effective area SD 524cm²
  • Moving mass (including air load) MMS 61.8g
  • Moving mass MMD 53.5g
  • Material Poly-laminated paper

Suspensions

  • Stiffness KMS 3.45N/mm
  • Compliance CMS 290µm/N
  • Equivalent volume to the compliance VAS 113L
  • Mechanical resistance RMS 2.27N·s/m
  • Surround material Treated foam

Dimensions

  • Nominal diameter 12″
  • 303mm
  • Overall diameter 303mm
  • Baffle cutout diameter 277mm
  • Overall depth 121mm
  • Flange thickness 10mm
  • Mounting depth 111mm
  • Volume occupied by the driver (estimated) 1.9L
Impedance
SPL
GRS 12PF-8 Impedance
GRS 12PF-8 SPL
GRS 12PF-8 Dimensions
PDF fileDatasheet

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