## Technical Overview: AS05008PR-WR-R The **AS05008PR-WR-R** is a high-quality, miniature dynamic speaker manufactured by **PUI Audio**. It is specifically designed for applications requiring a compact form factor with moisture resistance. --- ### 1. Key Technical Specifications | Parameter | Value / Specification | | :--- | :--- | | **Speaker Type** | Dynamic, Permanent Magnet | | **Impedance** | 8 Ohms (± 15%) | | **Rated Power** | 0.5 Watts | | **Maximum Power** | 0.8 Watts | | **Frequency Range** | 500 Hz ~ 20,000 Hz | | **Sound Pressure Level (SPL)** | 84 dB @ 0.1W / 0.1M | | **Resonant Frequency (Fo)** | 500 Hz | | **Diaphragm Material** | Mylar (Water Resistant) | | **Dimensions** | 50mm Diameter x 8mm Depth | --- ### 2. Physical Construction and Features * **Water Resistance:** The "WR" in the part number denotes **Water Resistant**. It features a Mylar cone which does not absorb moisture, making it suitable for outdoor or humid environments. * **Form Factor:** It is a low-profile, round speaker. The slim 8mm depth allows it to fit into shallow enclosures or handheld devices. * **RoHS Compliant:** The "R" at the end signifies compliance with RoHS standards (Lead-free). * **Housing:** Metal frame construction for durability and magnetic shielding. --- ### 3. Electronic Integration When integrating this part into a circuit, consider the following electronic principles: #### A. Driving the Speaker Because this is an 8-ohm speaker, it can be driven directly by most standard Class-D or Class-AB audio amplifiers. * **DC Blocking:** Always use a capacitor (typically 100µF to 470µF) in series if your amplifier output has a DC offset to prevent burning out the voice coil. #### B. Typical Applications * **IoT Devices:** Smart home hubs or security panels. * **Medical Instruments:** Audible alarms or voice prompts. * **Industrial Equipment:** Control panel feedback. * **Marine/Outdoor Electronics:** Basic audio signaling where splash resistance is required. --- ### 4. Frequency Response Characteristics The speaker performs best in the mid-to-high range. With a resonant frequency (Fo) of 500 Hz, it is not intended for heavy bass (subwoofer) applications, but it is excellent for clear **voice reproduction** and **melodic signaling**.