GRS Professional 10PT-8

8Ω

Woofer

Nominal diameter10″ / 254 mm
Resonance47 Hz
Q factor0.48
Sensitivity91.3 dB
Linear excursion± 6.8 mm
Program power400 W
GRS 10PT-8 WooferGRS 10PT-8 WooferGRS 10PT-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 91.3dB
  • Frequency response 40 - 7000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 47Hz
  • Mechanical quality factor QMS 11.40
  • Electrical quality factor QES 0.50
  • Total quality factor QTS 0.48

Large signal parameters

  • Maximum linear excursion (one way) xmax 6.8mm
  • Air volume displaced at xmax VD 237cm³
  • Power handling P 200W
  • Program power Pmax 400W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 7.1Ω
  • Inductance (1kHz) LE 1.6mH
  • VC Diameter 50.8mm
  • Winding height HVC 16mm

Magnet

  • Force factor Bl 13.4N/A
  • Motor constant Bl/√RE 5.03N/√W
  • Air gap height HAG 7mm
  • Diameter 156mm

Diaphragm

  • Effective diameter 210mm
  • Effective area SD 348cm²
  • Moving mass (including air load) MMS 43g
  • Moving mass MMD 38.3g
  • Material Paper

Suspensions

  • Stiffness KMS 3.7N/mm
  • Compliance CMS 270µm/N
  • Equivalent volume to the compliance VAS 46.1L
  • Mechanical resistance RMS 1.11N·s/m

Dimensions

  • Nominal diameter 10″
  • 254mm
  • Overall diameter 258mm
  • Baffle cutout diameter 232mm
  • Overall depth 112mm
  • Flange thickness 10mm
  • Mounting depth 102mm
  • Volume occupied by the driver (estimated) 1.4L
Impedance
SPL
GRS 10PT-8 Impedance
GRS 10PT-8 SPL
GRS 10PT-8 Dimensions
PDF fileDatasheet

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