GRS 8FR-8

8Ω

Full-range

Nominal diameter	8″ / 203 mm
Resonance	45.1 Hz
Q factor	0.56
Sensitivity	88.8 dB
Linear excursion	± 3 mm
Program power	120 W

GRS 8FR-8 Full-range

Specifications

Sensitivity (1W, 1m, infinite baffle) SPL1W 88.8dB
Frequency response 39 - 16000Hz

Thiele & Small parameters

Resonance frequency (free air) fS 45.1Hz
Mechanical quality factor QMS 4.83
Electrical quality factor QES 0.63
Total quality factor QTS 0.56

Large signal parameters

Maximum linear excursion (one way) xmax 3mm
Air volume displaced at xmax VD 65cm³
Power handling P 60W
Program power Pmax 120W

Voice Coil

Nominal impedance Z 8Ω
DC resistance RE 7.3Ω
Inductance (1kHz) LE 1.19mH
VC Diameter 38mm

Magnet

Force factor Bl 8.52N/A
Motor constant Bl/√RE 3.15N/√W
Diameter 183mm
Height 20mm

Diaphragm

Effective diameter 165mm
Effective area SD 215cm²
Moving mass (including air load) MMS 22.2g
Moving mass MMD 19.9g

Suspensions

Stiffness KMS 1.79N/mm
Compliance CMS 560µm/N
Equivalent volume to the compliance VAS 37L
Mechanical resistance RMS 1.3N·s/m

Dimensions

Nominal diameter 8″
203mm
Overall diameter 203mm
Overall depth 98mm
Flange thickness 6mm
Mounting depth 92mm
Volume occupied by the driver (estimated) 0.82L

GRS 8FR-8 SPL

GRS 8FR-8 Dimensions

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