The **AS04008PR-WR-R** is a high-quality, miniature waterproof speaker manufactured by **PUI Audio**. It is specifically designed for applications where space is limited and environmental protection (water and dust resistance) is required. --- ### 1. 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% @ 1.5 kHz | | **Rated Power** | 1.0 Watt | | **Maximum Power** | 1.5 Watts | | **Sound Pressure Level (SPL)** | 82 ±3 dB @ 1W/0.5M | | **Frequency Range** | 500 Hz ~ 20,000 Hz | | **Resonant Frequency (Fo)** | 500 Hz ±20% | | **IP Rating** | IP67 (Waterproof/Dustproof) | | **Dimensions** | 40mm x 40mm x 18.5mm | | **Termination** | Wire Leads (150mm length) | --- ### 2. Key Internal Components The AS04008PR-WR-R consists of several critical electronic and mechanical parts: * **Neodymium Magnet (NdFeB):** Uses a high-strength rare-earth magnet to provide a strong magnetic field in a small footprint, ensuring high efficiency. * **Mylar/Polymer Diaphragm:** Unlike paper cones, this uses a waterproof synthetic material. This allows the speaker to achieve an **IP67 rating**, meaning it can be submerged in water (up to 1 meter) without damage. * **Voice Coil:** A precision-wound copper coil that reacts with the magnetic field to move the diaphragm. * **Enclosure/Frame:** A robust plastic frame designed to prevent air leaks and maintain acoustic integrity. --- ### 3. Application Use Cases Due to its waterproof nature and compact size, this speaker is commonly found in: 1. **Handheld Devices:** Outdoor walkie-talkies and GPS units. 2. **Medical Equipment:** Devices that require frequent sanitization or liquid exposure. 3. **IoT & Smart Home:** Video doorbells and outdoor security cameras. 4. **Marine Electronics:** Control panels for boats or water-resistant instrumentation. --- ### 4. Mounting and Wiring * **Wiring:** The part comes with pre-stripped wire leads, making it easy to solder directly to a PCB or connect via a terminal block. * **Polarity:** The red wire indicates positive (+), and the black wire indicates negative (-). Correct polarity is essential to prevent phase cancellation in multi-speaker setups. ---