GRS 6PR-8

8Ω

Woofer

Nominal diameter6.5″ / 165 mm
Resonance69 Hz
Q factor0.87
Sensitivity87.1 dB
Linear excursion± 3 mm
Program power120 W
GRS 6PR-8 WooferGRS 6PR-8 WooferGRS 6PR-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 87.1dB
  • Frequency response 60 - 8000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 69Hz
  • Mechanical quality factor QMS 3.51
  • Electrical quality factor QES 1.16
  • Total quality factor QTS 0.87

Large signal parameters

  • Maximum linear excursion (one way) xmax 3mm
  • Air volume displaced at xmax VD 42cm³
  • Power handling P 60W
  • Program power Pmax 120W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 7.1Ω
  • Inductance (1kHz) LE 1.1mH
  • VC Diameter 38mm

Magnet

  • Force factor Bl 6.1N/A
  • Motor constant Bl/√RE 2.29N/√W
  • Diameter 100mm
  • Height 18mm
  • Material Ceramic ferrite

Diaphragm

  • Effective diameter 134mm
  • Effective area SD 140cm²
  • Moving mass (including air load) MMS 14.2g
  • Moving mass MMD 13g
  • Material Polypropylene

Suspensions

  • Stiffness KMS 2.63N/mm
  • Compliance CMS 380µm/N
  • Equivalent volume to the compliance VAS 10.6L
  • Mechanical resistance RMS 1.75N·s/m
  • Surround material Butyl rubber

Dimensions

  • Nominal diameter 6.5″
  • 165mm
  • Overall diameter 165mm
  • Baffle cutout diameter 147mm
  • Overall depth 77mm
  • Flange thickness 4mm
  • Mounting depth 73mm
  • Volume occupied by the driver (estimated) 0.45L
Impedance
SPL
GRS 6PR-8 Impedance
GRS 6PR-8 SPL
GRS 6PR-8 Dimensions
PDF fileDatasheet

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