The **AS04008PO-2-WR-R** is a high-performance miniature speaker manufactured by **PUI Audio**. It is part of their "AS" series, specifically designed for applications requiring high-quality sound in a small, moisture-resistant form factor. --- ### ## Technical Specifications The following table summarizes the key electrical and physical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Speaker Type** | Dynamic, Permanent Magnet | | **Impedance** | 8 Ohms (±15%) | | **Rated Power** | 2 Watts | | **Maximum Power** | 3 Watts | | **Frequency Range** | 200 Hz ~ 20,000 Hz | | **Sound Pressure Level (SPL)** | 84 dB @ 1W / 0.5m | | **Diaphragm Material** | PEEK (Polyether Ether Ketone) | | **Ingress Protection** | IP65 (Water Resistant) | | **Mounting Type** | Surface Mount / Flange | --- ### ## Key Design Features 1. **Weather Resistance (-WR):** The suffix "WR" indicates that the speaker is water-resistant. It utilizes a **PEEK diaphragm**, which is a high-performance plastic that does not absorb moisture and resists chemical degradation, unlike traditional paper cones. 2. **Neodymium Magnet:** It uses a high-grade Neodymium (NdFeB) magnet. This allows the speaker to achieve a high SPL and 2W power handling despite its compact 40mm x 40mm footprint. 3. **Low Profile:** The "PO" (Point Source/Oval-style mounting) design is optimized for slim electronic enclosures, such as handheld devices or wall-mounted panels. 4. **Wiring:** The "-R" suffix indicates the presence of pre-attached lead wires, simplifying the assembly process for manufacturers. --- ### ## Common Applications * **Medical Devices:** Portable monitors and diagnostic equipment. * **Security Systems:** Outdoor intercoms, doorbells, and alarm panels. * **IoT Devices:** Smart home hubs located in humid environments (kitchens/bathrooms). * **Industrial Controls:** Audible feedback for machinery in dusty or damp workshops. --- ### ## Installation Considerations * **Polarity:** Ensure the red wire is connected to the positive terminal to maintain correct phase, especially if using multiple speakers. * **Baffle Design:** To achieve the 200 Hz low-end frequency response, the speaker should be mounted in a sealed or ported enclosure to prevent "acoustic short-circuiting" (where front and back sound waves cancel each other out). * **Thermal Management:** While rated for 2W, continuous operation at maximum power generates heat. Ensure there is adequate airflow or a heat-conductive mounting surface if used at peak levels for extended periods.