GRS 3FR-4 Full-Range 3" Speaker Driver 4 Ohm

The GRS 3FR-4 3" driver makes a great economical replacement full-range speaker for devices like multimedia speakers, table radios, and home theater soundbar systems. It’s also an excellent choice for new designs. 4 ohm impedance.

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Product highlights:

• Coated paper cone with foam surround for clear sound
• Pincushion-shape frame with front gasket
• Economical ferrite magnet assembly
• Quality GRS construction and 1-year warranty

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Product details

GRS 3FR-4 Full-Range 3" Speaker Driver 4 Ohm

Why pay more? The GRS 3FR-4 is a great replacement driver for the widely-used, 3"-size full range drivers found commonly in home theater systems, table radios, “sound bars”, and multimedia speaker systems, among many other uses. It’s also useful as a replacement for 3" woofers.

A sturdy stamped steel frame with “pincushion”-shaped mounting flange supports a robust ferrite ceramic magnet, and the coated paper cone with foam surround delivers clear sound that you might not expect from a driver this affordable.

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Technical Specifications:

• Article number 3FR-4
• Woofer Series Full-Range Speakers
• Woofer Type Midrange / Midbass Drivers
• Nominal Diameter 3"
• Power Handling (RMS) 10 Watts
• Power Handling (max) 20 Watts
• Impedance (Z) 4 ohms
• Sensitivity (SPL at 1m / 2.83V) 84 dB
• Frequency Response 135 to 16,000 Hz
• Voice Coil Diameter 0.75"
• DC Resistance (Re) 4.00 ohms
• Voice Coil Inductance (Le) 0.39 mH
• Resonant Frequency (Fs) 135 Hz
• Mechanical Q (Qms) 4.11
• Electromagnetic Q (Qes) 1.11
• Total Q (Qts) 0.88
• Compliance Equivalent Volume (Vas) 0.03 ft.³
• Maximum Linear Excursion (Xmax) 2 mm
• Cone / Diaphragm Material Paper
• Surround Material Foam
• Basket / Frame Material Steel
• Magnet Material Ferrite
• Overall Outside Diameter 3.75"
• Overall Depth 1.69"
• Baffle Cutout Diameter 2.82"
• # Mounting Holes 4
• Sealed Volume 0.08 ft.³
• Sealed F3 131 Hz
• Vented Volume 0.15 ft.³
• Vented F3 78 Hz