GRS 8PF-8

8Ω

Woofer

Nominal diameter8″ / 203 mm
Resonance50 Hz
Q factor0.98
Sensitivity87.5 dB
Linear excursion± 3 mm
Program power200 W
GRS 8PF-8 WooferGRS 8PF-8 WooferGRS 8PF-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 87.5dB
  • Frequency response 55 - 6000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 50Hz
  • Mechanical quality factor QMS 4.94
  • Electrical quality factor QES 1.22
  • Total quality factor QTS 0.98

Large signal parameters

  • Maximum linear excursion (one way) xmax 3mm
  • Air volume displaced at xmax VD 65cm³
  • Power handling P 100W
  • Program power Pmax 200W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 7.2Ω
  • Inductance (1kHz) LE 1.1mH
  • VC Diameter 38mm

Magnet

  • Force factor Bl 6.5N/A
  • Motor constant Bl/√RE 2.42N/√W
  • Diameter 100mm

Diaphragm

  • Effective diameter 166mm
  • Effective area SD 215cm²
  • Moving mass (including air load) MMS 23.3g
  • Moving mass MMD 21g
  • Material Poly-laminated paper

Suspensions

  • Stiffness KMS 2.27N/mm
  • Compliance CMS 440µm/N
  • Equivalent volume to the compliance VAS 28.9L
  • Mechanical resistance RMS 1.48N·s/m
  • Surround material Treated foam

Dimensions

  • Nominal diameter 8″
  • 203mm
  • Overall diameter 203mm
  • Baffle cutout diameter 183mm
  • Overall depth 79mm
  • Flange thickness 4mm
  • Mounting depth 75mm
  • Volume occupied by the driver (estimated) 0.61L
Impedance
SPL
GRS 8PF-8 Impedance
GRS 8PF-8 SPL
GRS 8PF-8 Dimensions
PDF fileDatasheet

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