The **AS05708PR-2-WR-R** is a high-performance, water-resistant micro speaker manufactured by **PUI Audio**. It is designed for applications requiring reliable audio output in challenging environments. --- ### ## 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% at 1.0 kHz) | | **Power Rating** | 2 Watts (Nominal) / 3 Watts (Maximum) | | **Sound Pressure Level (SPL)** | 86 dB ± 3dB @ 1W/0.5M | | **Frequency Range** | 300 Hz ~ 20,000 Hz | | **Resonant Frequency (Fo)** | 500 Hz ± 20% | | **Ingress Protection** | IP65 (Water Resistant) | | **Dimensions** | 57mm x 57mm x 25.5mm | --- ### ### Key Electronic Components & Materials The internal construction of the AS05708PR-2-WR-R consists of several critical parts that work together to produce sound: 1. **Voice Coil:** A precision-wound copper wire that creates an electromagnetic field when an audio signal (AC current) is passed through it. 2. **Magnet (NdFeB):** Uses a high-strength Neodymium magnet to provide a stable magnetic field, allowing for high sensitivity in a compact form factor. 3. **Diaphragm/Cone:** Made of specialized water-resistant materials (likely treated paper or polymer) to allow for sound displacement while blocking moisture. 4. **Suspension (Spider & Surround):** Provides the mechanical "spring" that returns the cone to its neutral position, ensuring low distortion. 5. **Housing/Frame:** A robust metal or high-grade plastic frame that provides structural integrity and mounting points. --- ### ### Usage and Connectivity * **Wiring:** The "WR" in the part number indicates it comes with **Lead Wires** pre-attached, simplifying the integration into a PCB or enclosure without the need for immediate soldering to the speaker terminals. * **Protection:** The IP65 rating means it is protected against dust ingress and low-pressure water jets from any direction, making it ideal for outdoor kiosks, medical devices, or marine equipment. --- ### ### Frequency Response Curve (Typical) While the raw data is numerical, the speaker follows a "mid-range" curve: * **Low End:** Performance drops off sharply below 300Hz (not suitable for deep bass). * **High End:** Maintains clarity up to 20kHz, making it excellent for voice alerts and melodic tones.