The 3W 4Ω 40mm Rubber Gasket Loudspeaker is a compact and efficient audio component designed for clear sound reproduction in DIY electronics, embedded systems, and small audio devices. With a balanced frequency response and durable construction, this speaker ensures consistent performance for various applications, including Arduino projects, robotics, and portable audio systems.

Key Features

• Size: 40mm diameter for compact integration.

• Impedance: 4Ω ± 20% for stable electrical compatibility.

• Power Rating: 3W nominal, 3.5W max for clear sound output.

• Resonant Frequency: 150 Hz – 20 kHz for balanced audio response.

• Sensitivity: 85 dB/W for efficient sound reproduction.

• Durable Rubber Gasket: Provides enhanced vibration absorption and long-lasting performance.