## Detailed Overview: AS03204MS-3-R The **AS03204MS-3-R** is a high-quality, miniature loudspeaker manufactured by **PUI Audio**. It is specifically designed for compact electronic devices requiring clear voice and signal reproduction in a small form factor. --- ### 1. Key Technical Specifications The following table outlines the primary electrical and physical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Manufacturer** | PUI Audio | | **Type** | Dynamic Speaker (Moving Coil) | | **Impedance** | 4 Ohms (±15%) | | **Rated Power** | 2 Watts | | **Max Power** | 3 Watts | | **Frequency Range** | 200 Hz ~ 20,000 Hz | | **Sensitivity** | 82 dB (1W @ 0.5m) | | **Magnet Material** | NdFeB (Neodymium) | | **Weight** | ~6.5 Grams | --- ### 2. Physical Dimensions and Build This speaker is recognized for its "square-round" or rectangular slim profile, making it ideal for modern handheld electronics. * **Width/Length:** 32mm x 32mm * **Depth:** 11.5mm * **Cone Material:** Mylar / Paper (typically weather-resistant) * **Mounting:** Often features mounting holes at the corners for secure screw-down installation. --- ### 3. Core Components and Materials The AS03204MS-3-R utilizes high-grade materials to achieve a balance between size and volume: 1. **Neodymium Magnet:** Provides high magnetic flux density, allowing the speaker to be loud despite its small size. 2. **Voice Coil:** A 4-ohm coil optimized for standard battery-powered amplifiers (such as Class-D chips). 3. **Frame:** Durable plastic or metal housing designed to minimize vibration distortion. --- ### 4. Common Applications Due to its 2W power rating and 32mm size, it is frequently found in: * **IoT Devices:** Smart home hubs and voice assistants. * **Medical Instrumentation:** Diagnostic machines requiring audible alerts. * **Industrial Equipment:** Control panels and monitoring systems. * **Kiosks:** Point-of-Sale (POS) terminals. --- ### 5. Wiring and Connectivity The "R" in the part number typically denotes RoHS compliance. Connection is usually made via: * **Solder Pads:** Located on the rear of the speaker for direct wire attachment. * **Polarity:** Clearly marked (typically with a '+' or red dot) to ensure correct phase when using multiple speakers.