8" Poly Cone Rubber Surround Woofer

The 8PR-8 replacement woofer is a great fit for many vintage speaker systems, and is just as easy to work with in your own new speaker building projects. Its performance is optimized for use in acoustic suspension designs, and its cost is optimized to be easy on your budget.

Product Details

Our 8PR-8 8" woofer features a polypropylene cone and a rubber surround to produce smooth response with outstanding damping. Thanks to its carefully optimized parameters, this driver is ideal for use in sealed-box speaker applications giving it a high degree of compatibility when used as a replacement speaker—it provides excellent performance in new designs, as well.

Quick Facts

  • Polypropylene cone for perfect balance of stiffness, mass, and self-damping
  • Butyl rubber surround ensures high excursion and long term durability
  • Stamped steel frame keeps components in perfect alignment
  • Optimized motor features high-energy ceramic ferrite magnet, vented pole piece


Product Specifications

Nominal Diameter8"
Power Handling (RMS)65 Watts
Power Handling (max)90 Watts
Impedance8 ohms
Frequency Response40 to 5,000 Hz
Sensitivity85 dB 1W/1m
Voice Coil Diameter1.5"

Thiele-Small Parameters

Resonant Frequency (Fs)52 Hz
DC Resistance (Re)7.58 ohms
Voice Coil Inductance (Le)1.09 mH
Mechanical Q (Qms)4.77
Electromagnetic Q (Qes)1.45
Total Q (Qts)1.11
Compliance Equivalent Volume (Vas)0.76 ft.³
Maximum Linear Excursion (Xmax)3 mm

Materials of Construction

Cone MaterialPoly
Surround MaterialRubber
Magnet MaterialFerrite

Mounting Information

Overall Outside Diameter8"
Baffle Cutout Diameter7.32"
# Mounting Holes4

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

Sealed Volume0.81 ft.³
Sealed F354 Hz
Vented Volume5.54 ft.³
Vented F329 Hz