GRS 4PF-8 4" Paper Cone Foam Surround Woofer

Highlights

• Perfect for use in sealed-box home theater and music systems
• Poly-laminated paper cone, treated foam surround, and polymer dust cap
• Smooth frequency response with minimal cone breakup
   

Resonant frequency fS 98 Hz

Electrical Q QES 1.90

Mechanical Q QMS 4.55

Total Q factor QTS 1.34

Suspension equivalent air volume VAS 3.4 litres

DC resistance RE 7.49 Ω

Voice coil inductance LE 0.88 mH

Maximum linear excursion Xmax ± 2.5 mm

Efficiency η₀ 0.16 %

Efficiency bandwidth product EBP 51

Overall diameter 104.8 mm

Baffle hole diameter 95.3 mm

Mounting depth 54 mm

Diaphragm material Treated Paper

Voice coil diameter 25.4 mm

Magnet Ferrite

Product Details

GRS 4PF-8 4" Paper Cone Foam Surround Woofer

Thanks to their carefully optimized parameters, GRS 4PF-8 4" poly-laminated paper cone woofers offer a high degree of compatibility when used as replacement speakers—they also provide excellent performance in new projects, too.