5-1/4" Paper Cone Foam Surround Woofer

The 5PF-8 features a poly-laminated paper cone and rounded square frame, making it a perfect replacement speaker for many classic systems. Its performance characteristics are optimized for use in acoustic suspension designs.

Product Details

The 5PF-8 5-1/4" woofers feature a poly-laminate coated cone and a foam surround. They are ideally suited for all sealed-box speaker applications. Thanks to their carefully optimized parameters, our 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.

Quick Facts

  • 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


Product Specifications

Nominal Diameter5-1/4"
Power Handling (RMS)70 Watts
Power Handling (max)130 Watts
Impedance8 ohms
Frequency Response90 to 8,000 Hz
Sensitivity84 dB 1W/1m
Voice Coil Diameter1"

Thiele-Small Parameters

Resonant Frequency (Fs)100 Hz
DC Resistance (Re)7.45 ohms
Voice Coil Inductance (Le)0.85 mH
Mechanical Q (Qms)4.87
Electromagnetic Q (Qes)1.97
Total Q (Qts)1.4
Compliance Equivalent Volume (Vas)0.11 ft.³
Maximum Linear Excursion (Xmax)2.5 mm

Materials of Construction

Cone MaterialTreated Paper
Surround MaterialFoam
Magnet MaterialFerrite

Mounting Information

Overall Outside Diameter5.0625"
Baffle Cutout Diameter4.75"
# Mounting Holes4

Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)

Sealed Volume0.08 ft.³
Sealed F3107 Hz
Vented Volume1.26 ft.³
Vented F354 Hz