3W Mini Cavity Speaker

The 2535 4Ω 3W Mini Cavity Speaker is a compact yet powerful audio solution designed for modern electronic devices and DIY projects. With a size of approximately 25mm × 35mm, this speaker delivers clear and balanced sound with improved bass response thanks to its built-in cavity design.

It features a 4 Ohm impedance and supports up to 3W power output, making it an excellent match for small audio amplifiers like MAX98357A or PAM8403. The pre-attached wires allow for easy connection, making it beginner-friendly and perfect for rapid prototyping.

This speaker is widely used in Bluetooth speakers, IoT devices, laptops, TV boxes, and embedded systems, where space is limited but sound quality is important.

🔧 Key Features
Compact 2535 size (25×35mm)
Clear and loud sound output
Built-in cavity design for better bass
4 Ohm impedance, compatible with common amplifiers
Pre-soldered wires for easy connection
Suitable for stereo (pair) or mono use
⚙️ Specifications
Speaker Type: Cavity / Internal Magnetic
Size: 25mm × 35mm
Impedance: 4Ω
Rated Power: 2W
Max Power: 3W
Frequency Response: ~0Hz – 20kHz
Sensitivity: ~89dB ±3dB
Connector: Red (+), Black (-) wires
🔌 Applications
Bluetooth speaker projects
ESP32 / Arduino audio output
DIY sound systems
Laptop / tablet speaker replacement
Embedded audio devices
⚠️ Important Notes
Do not connect directly to microcontroller pins
Always use an amplifier module
Avoid exceeding 3W power
Use enclosure/box for best sound performance