The **AS05708PR-2-R** is a high-performance, miniature loudspeaker manufactured by **PUI Audio**. It is specifically designed for applications where space is limited but high-quality sound reproduction is required. --- ### 1. Key Technical Specifications The following table outlines the primary electrical and physical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Impedance** | 8 Ohms (±15%) | | **Rated Power** | 2.0 Watts | | **Maximum Power** | 3.0 Watts | | **Sound Pressure Level (SPL)** | 86 dB (at 1W / 0.5m) | | **Resonant Frequency (Fs)** | 500 Hz (±20%) | | **Frequency Range** | 500 Hz ~ 20,000 Hz | | **Magnet Material** | NdFeB (Neodymium) | | **Weight** | ~7.2 grams | --- ### 2. Internal Construction and Materials The part is engineered using specific materials to balance durability and acoustic clarity: * **Neodymium Magnet:** Provides a high flux density in a small footprint, allowing for high sensitivity despite the small size. * **Paper Cone:** Utilizes a treated paper cone which offers a natural sound profile and lightweight movement. * **Frame Material:** Typically constructed from a durable ABS or metal housing to prevent mechanical distortion during high-output playback. * **Termination:** Features solder pads for secure electrical connection to a PCB or wiring harness. --- ### 3. Application Use Cases Due to its small form factor and 2W power rating, this speaker is commonly found in: 1. **Handheld Devices:** Radios, scanners, and portable medical equipment. 2. **IoT Devices:** Smart home hubs and voice-assistant peripherals. 3. **Industrial Equipment:** Audible alarms, user interface feedback, and status indicators. 4. **Security Systems:** Control panels and intercom systems. --- ### 4. Mounting and Integration Tips When integrating the AS05708PR-2-R into a design, consider the following: * **Enclosure Design:** To achieve the best bass response (closest to the 500Hz Fs), a sealed or ported enclosure should be designed around the back of the speaker to prevent "acoustic shorting." * **Polarity:** Ensure the positive (+) and negative (-) terminals are wired correctly to maintain phase alignment, especially in multi-speaker arrays. * **Heat Dissipation:** While rated for 2W, ensure there is adequate airflow if the speaker is driven at its maximum 3W limit for extended periods.