4" Paper Cone Foam Surround Replacement Speaker - Woofer 70 Watts, 8 Ohms

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
Power Handling (RMS) 40 Watts
Power Handling (max) 70 Watts
Impedance 8 ohms
Frequency Response 100 to 10,000 Hz
Sensitivity 84 dB 1W/1m
Voice Coil Diameter 1"

THIELE-SMALL PARAMETERS
Resonant Frequency (Fs) 98 Hz
DC Resistance (Re) 7.49 ohms
Voice Coil Inductance (Le) 0.88 mH
Mechanical Q (Qms) 4.55
Electromagnetic Q (Qes) 1.90
Total Q (Qts) 1.34
Compliance Equivalent Volume (Vas) 0.12 ft.³
Maximum Linear Excursion (Xmax) 2.5 mm

MATERIALS OF CONSTRUCTION
Cone Material Treated Paper
Magnet Material Ferrite

MOUNTING INFORMATION
Overall Outside Diameter 4.125"
Baffle Cutout Diameter 3.75"
Depth 2.125"
# Mounting Holes 4

OPTIMUM CABINET SIZE *
Sealed Volume 0.09 ft.³
Sealed F3 104 Hz
Vented Volume 1.26 ft.³
Vented F3 53 Hz
* Enclosure volume/F3s based on BassBox "optimum" calculations

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