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GRS 8PR-8 8" Poly Cone Rubber Surround Woofer

GRS
Part #292-428

GRS 8PR-8 8" Poly Cone Rubber Surround Woofer

GRS
Part #292-428  
Model: 8PR-8
The GRS 8PR-8 8" woofer features a polypropylene cone and a rubber surround. It performs admirably in sealed-box speaker applications.
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
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Overview

GRS 8PR-8 8" Poly Cone Rubber Surround Woofer

The GRS 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.

Product Details

BrandGRS
Model8PR-8
Part Number292-428
UPC844632088520
Unit of MeasureEach
Weight3

Product Specifications

Nominal Diameter8"
Bolt Circle Diameter7.6
Power Handling (RMS)65 Watts
Power Handling (MAX)130 Watts
Impedance8Ω
Frequency Response40 to 5,000Hz
Sensitivity87dB 2.83V/1m
Voice Coil Diameter1.5"

Thiele-Small Parameters

Resonant Frequency (Fs)52Hz
DC Resistance (Re)7.4Ω
Voice Coil Inductance (Le)1.1mH
Mechanical Q (Qms)4.08
Electromagnetic Q (Qes)1.28
Total Q (Qts)0.97
Compliance Equivalent Volume (Vas)0.79ft³
Mechanical Compliance of Suspension (Cms)0.36mm/N
BL Product (BL)6.9T·m
Diaphragm Mass Inc. Airload (Mms)23.42g
Maximum Linear Excursion (Xmax)3mm
Surface Area of Cone (Sd)209.8cm²

Materials of Construction

Cone MaterialPoly
Surround MaterialRubber
Basket / Frame MaterialSteel
Magnet MaterialFerrite

Mounting Information

Overall Outside Diameter8"
Baffle Cutout Diameter7.32"
Depth3.44"
# Mounting Holes4

Parts Express Staff Recommended Enclosure Volume

Sealed Volume0.85ft³
Sealed F352.2Hz

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