T/S Parameters
Valid
Fs137Hz
Qts1.94
Qms5.8
Vas1.2L
Re6.8Ω
Le0.50mH
BL3.1Tm
Sd55cm²
Xmax1.5mm
SPL83dB
Power40W
Impedance8Ω
F Low100Hz
F High10000Hz
Voice Coil1mm
Pricing & availability
Price movement
Best current price
Updated 17 May 2026
soundimports
£12.08
inc VAT
Dimensions & Physical
Diameter114.0mm
Overall Depth54.0mm
Cutout Diameter94.0mm
Bolt Circle Diameter105.0mm
Similar Drivers
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Reference
GRS
4PF-8
4"
Best current price
£12.08
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Only active params are shown here. Size stays fixed automatically.
5 active T/S params, plus size.
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