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GRS 6PR-8 6-1/2" polypropylene cone woofers with butyl rubber surrounds are great replacement speakers, but also provide excellent performance in new projects.

Key Features

  • 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
Part Number292-426
Unit of MeasureEach

Product Specifications

Nominal Diameter6-1/2"
Power Handling (RMS)60 Watts
Power Handling (MAX)120 Watts
Frequency Response60 to 8,000Hz
Sensitivity87dB 2.83V/1m
Voice Coil Diameter1.5"

Thiele-Small Parameters

Resonant Frequency (Fs)69Hz
DC Resistance (Re)7.1Ω
Voice Coil Inductance (Le)1.1mH
Mechanical Q (Qms)3.51
Electromagnetic Q (Qes)1.16
Total Q (Qts)0.87
Compliance Equivalent Volume (Vas)0.37ft³
Mechanical Compliance of Suspension (Cms)0.38mm/N
BL Product (BL)6.1T·m
Diaphragm Mass Inc. Airload (Mms)14.2g
Maximum Linear Excursion (Xmax)3mm
Surface Area of Cone (Sd)140cm²

Materials of Construction

Cone MaterialPoly
Surround MaterialRubber
Magnet MaterialFerrite

Mounting Information

Overall Outside Diameter6.5"
Baffle Cutout Diameter5.625"
# Mounting Holes4

 Recommended Enclosure Volume

Sealed Volume0.5ft³
Sealed F370.5Hz
Vented Volume0.5ft³
Vented F354.6Hz

GRS 6PR-8 6-1/2" Poly Cone Rubber Surround Woofer

SKU: 6PR-8
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