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

GRS
Part #292-404

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

GRS
Part #292-404  
Model: 4PF-8
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.
Key Features
  • 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
Your Price: $5.59
MSRP: $10.99
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Overview

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.

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Product Details

BrandGRS
Model4PF-8
Part Number292-404
UPC844632088445
Unit of MeasureEach
Weight1.4

Product Specifications

Nominal Diameter4"
Power Handling (RMS)40 Watts
Power Handling (MAX)80 Watts
Impedance8Ω
Frequency Response100 to 10,000Hz
Sensitivity83dB 2.83V/1m
Voice Coil Diameter1"

Thiele-Small Parameters

Resonant Frequency (Fs)137Hz
DC Resistance (Re)6.8Ω
Voice Coil Inductance (Le)0.5mH
Mechanical Q (Qms)5.81
Electromagnetic Q (Qes)2.9
Total Q (Qts)1.94
Compliance Equivalent Volume (Vas)0.04ft³
Mechanical Compliance of Suspension (Cms)0.28mm/N
BL Product (BL)3.1T·m
Diaphragm Mass Inc. Airload (Mms)4.8g
Maximum Linear Excursion (Xmax)1.5mm
Surface Area of Cone (Sd)55.2cm²

Materials of Construction

Cone MaterialTreated Paper
Magnet MaterialFerrite

Mounting Information

Overall Outside Diameter4.125"
Baffle Cutout Diameter3.75"
Depth2.125"
# Mounting Holes4

Parts Express Staff Recommended Enclosure Volume

Sealed Volume0.1ft³
Sealed F3101.4Hz

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