GRS 6PT-8

8Ω

Woofer

Nominal diameter6.5″ / 165 mm
Resonance94 Hz
Q factor0.72
Sensitivity91.4 dB
Linear excursion± 4.2 mm
Program power200 W
GRS 6PT-8 WooferGRS 6PT-8 WooferGRS 6PT-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 91.4dB
  • Frequency response 55 - 11000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 94Hz
  • Mechanical quality factor QMS 4.74
  • Electrical quality factor QES 0.85
  • Total quality factor QTS 0.72

Large signal parameters

  • Maximum linear excursion (one way) xmax 4.2mm
  • Air volume displaced at xmax VD 57cm³
  • Power handling P 100W
  • Program power Pmax 200W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 7.4Ω
  • Inductance (1kHz) LE 1.1mH
  • VC Diameter 41mm
  • Winding height HVC 10mm

Magnet

  • Force factor Bl 6.4N/A
  • Motor constant Bl/√RE 2.35N/√W
  • Air gap height HAG 5mm
  • Diameter 120mm

Diaphragm

  • Effective diameter 132mm
  • Effective area SD 137cm²
  • Moving mass (including air load) MMS 8g
  • Moving mass MMD 6.8g
  • Material Lightweight damped paper

Suspensions

  • Stiffness KMS 2.78N/mm
  • Compliance CMS 360µm/N
  • Equivalent volume to the compliance VAS 9.5L
  • Mechanical resistance RMS 1N·s/m

Dimensions

  • Nominal diameter 6.5″
  • 165mm
  • Overall diameter 165mm
  • Baffle cutout diameter 147mm
  • Overall depth 78mm
  • Flange thickness 7mm
  • Mounting depth 71mm
  • Volume occupied by the driver (estimated) 0.46L
Impedance
SPL
GRS 6PT-8 Impedance
GRS 6PT-8 SPL
GRS 6PT-8 Dimensions
PDF fileDatasheet

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