GRS 3FR-4 FULL-RANGE 3" 4 OHM

Resonant frequency fS 135 Hz

Electrical Q QES 1.11

Mechanical Q QMS 4.11

Total Q factor QTS 0.88

Suspension equivalent air volume VAS 0.8 litres

DC resistance RE 4 Ω

Voice coil inductance LE 0.39 mH

Maximum linear excursion Xmax ± 2 mm

Efficiency η₀ 0.17 %

Efficiency bandwidth product EBP 121

Overall diameter 95.3 mm

Baffle hole diameter 71.6 mm

Mounting depth 42.9 mm

Frame material Steel

Diaphragm material Paper

Surround material Foam

Voice coil diameter 19 mm

Magnet Ferrite

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.

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
 

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.

Specifications for: 3FR-4 Full-Range 3" Speaker Driver 4 Ohm

• Woofer SeriesFull-Range Speakers
• Woofer TypeMidrange / Midbass Drivers
• Nominal Diameter3"
• Power Handling (RMS)10 Watts
• Power Handling (max)20 Watts
• Continuous Program Power
• Impedance4 ohms
• Sensitivity81 dB 1W/1m
• Frequency Response135 to 16,000 Hz
• Voice Coil Diameter0.75"
• Magnet Weight
• 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
• Diaphragm Mass Inc. Airload (Mms)
• Moving Mass Of Diaphragm (Mmd)
• Mechanical Compliance of Suspension (Cms)
• Surface Area of Cone (Sd)
• Volume of Displacement (Vd)
• BL Product (BL)
• Compliance Equivalent Volume (Vas)0.03 ft.³
• Maximum Linear Excursion (Xmax)2 mm
• Driver's Mechanical Losses (Rms)
• Cone / Diaphragm MaterialPaper
• Surround MaterialFoam
• Voice Coil Wire Material
• Voice Coil Former
• Dual Voice Coil
• Basket / Frame MaterialSteel
• Magnet MaterialFerrite
• Shielded
• Overall Outside Diameter3.75"
• Overall Depth1.69"
• Baffle Cutout Diameter2.82"
• Bolt Circle Diameter
• # Mounting Holes4
• Mounting Hole Diameter
• Sealed Volume0.08 ft.³
• Sealed F3131 Hz
• Vented Volume0.15 ft.³
• Vented F378 Hz