GRS 69AS-4

4Ω

Full-range

Nominal diameter6″ / 234 mm
Resonance72 Hz
Q factor1.53
Sensitivity90.1 dB
Linear excursion± 2.6 mm
Program power120 W
GRS 69AS-4 Full-rangeGRS 69AS-4 Full-rangeGRS 69AS-4 Full-range
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 90.1dB
  • Frequency response 65 - 6000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 72Hz
  • Mechanical quality factor QMS 5.67
  • Electrical quality factor QES 2.09
  • Total quality factor QTS 1.53

Large signal parameters

  • Maximum linear excursion (one way) xmax 2.6mm
  • Air volume displaced at xmax VD 53cm³
  • Power handling P 60W
  • Program power Pmax 120W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.7Ω
  • Inductance (1kHz) LE 0.27mH
  • VC Diameter 26mm
  • Former material Aluminum

Magnet

  • Force factor Bl 3.8N/A
  • Motor constant Bl/√RE 1.98N/√W
  • Diameter 80mm

Diaphragm

  • Effective diameter 160mm
  • Effective area SD 202cm²
  • Moving mass (including air load) MMS 18.2g
  • Moving mass MMD 15.9g
  • Material Poly cone

Suspensions

  • Stiffness KMS 3.7N/mm
  • Compliance CMS 270µm/N
  • Equivalent volume to the compliance VAS 15.6L
  • Mechanical resistance RMS 1.45N·s/m
  • Surround material Treated foam

Dimensions

  • Nominal diameter 6″
  • 234mm
  • Overall diameter 234mm
  • Baffle cutout diameter 219mm
  • Overall depth 86mm
  • Flange thickness 9mm
  • Mounting depth 77mm
  • Volume occupied by the driver (estimated) 0.83L
Impedance
SPL
GRS 69AS-4 Impedance
GRS 69AS-4 SPL
GRS 69AS-4 Dimensions
PDF fileDatasheet

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