What are the specifications of the 4 Ohm 3W 50mm speaker driver?

The 4 Ohm 3W 50mm speaker driver features a 4-ohm impedance, 3-watt power output, and a 50mm (2 inches) diameter. It typically has a frequency response of 150Hz – 20kHz, and may include mylar or paper diaphragms with ferrite or neodymium magnets.

Where is a 4 Ohm 3W 50mm speaker commonly used?

This speaker driver is commonly used in Bluetooth portable speakers, smart speakers, soundbars, gaming monitors, and DIY audio projects due to its small size and high performance.

What makes SPEAKERDRIVER™️ a top supplier for these units?

SPEAKERDRIVER™️ is known for its high-quality materials, precision tuning, OEM support, and continuous investment in R&D, making it a preferred supplier for premium 4 Ohm 3W 50mm speaker drivers.

What is the diaphragm material used in this speaker unit?

Common diaphragm materials for this speaker unit include mylar and paper, chosen for their lightweight and acoustic clarity properties.

Bluetooth Audio Speaker Driver Unit 4 Ohm 3W (50mm/2Inches)

Bluetooth audio devices rely heavily on powerful yet compact speaker driver units to deliver rich sound. The 4 Ohm 3W 50mm (2-inch) driver is one of the most common choices in portable wireless speakers due to its efficiency, size, and durability. This article explores its specs, build quality, applications, and why it is popular in the Bluetooth speaker segment.

Technical Specifications

Impedance: 4 Ohm
Power Output: 3W (Watts)
Diameter: 50mm (2 inches)
Frequency Range: 150Hz – 20kHz
Magnet Type: Ferrite or Neodymium
Diaphragm Material: Mylar or Paper
Frame Material: Steel or Aluminum Alloy
Mounting Type: Surface-mount or Screw-type

Applications of 4 Ohm 3W 50mm Speaker Unit

Bluetooth Portable Speakers – Most common use case due to ideal power-to-size ratio.
Smart Speakers & Assistants – Integrated into AI voice assistants for clean vocal delivery.
Soundbars & TV Audio Systems – Used in compact form factor for stereo enhancement.
DIY Audio Projects – Makers and hobbyists use these drivers in customized speaker kits.
Gaming Monitors & Consoles – Built-in speakers for immersive sound without external units.

Advantages of Using 4 Ohm 3W (50mm) Drivers

Compact and powerful – delivers rich mids and highs in small enclosures.
Energy-efficient – optimized for battery-powered Bluetooth devices.
Highly customizable – supports tuning for bass, treble, and enclosure needs.
Affordable – great value for mass production and DIY markets.

Speaker Driver Dimensions and Configuration Table

Specification	Value
Impedance	4 Ohm
Power Rating	3W
Diameter	50mm (2 Inches)
Frequency Response	150Hz – 20kHz
Voice Coil Diameter	20mm
Diaphragm	Mylar or Paper

Why Choose SPEAKERDRIVER™️?

Premium Quality Materials – Only top-grade ferrite magnets and resilient diaphragms.
Customizable Tuning – Fine-tuned frequency response for music clarity and voice precision.
OEM Support – Ideal for mass production with short lead times and stable pricing.
R&D Focus – Constant innovation in size reduction, thermal resistance, and acoustic fidelity.

Looking for high-performance 4 Ohm 3W speaker drivers for your Bluetooth speaker line? SPEAKERDRIVER™️ delivers innovation, precision, and support trusted by global brands.