The **AS02508CO-2-WR-R** is a high-performance, micro-dynamic speaker manufactured by **PUI Audio**. It is part of their "Copper" series, designed for applications requiring high-fidelity sound in a very compact footprint. --- ### ## Technical Specifications Below are the primary electronic and physical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Speaker Type** | Dynamic, Permanent Magnet | | **Impedance** | 8 Ohms (±15%) | | **Rated Power** | 2.0 Watts | | **Maximum Power** | 3.0 Watts | | **Frequency Range** | 200 Hz ~ 20,000 Hz | | **Sensitivity (SPL)** | 82 dB @ 1W / 0.5m | | **Resonant Frequency** | 500 Hz (±20%) | | **Termination** | Wire Leads (150mm length) | | **Dimensions** | 25mm x 25mm x 12mm | --- ### ## Key Electronic Components & Materials 1. **Voice Coil:** * Constructed with precision-wound copper wire. * The 8-ohm impedance makes it compatible with most standard Class-D audio amplifiers. 2. **Magnet System:** * Uses a **NdFeB (Neodymium Iron Boron)** magnet. * This material provides a high magnetic flux density, allowing the speaker to produce high sound pressure levels (SPL) despite its small size. 3. **Diaphragm/Cone:** * Typically made of treated paper or high-grade polymers to ensure durability and clear frequency response across the vocal range. 4. **Enclosure/Frame:** * Constructed from heat-resistant plastics (ABS or similar) to withstand industrial environments. --- ### ## Usage Considerations * **Polarity:** The device features color-coded wire leads (typically Red for positive, Black for negative) to ensure correct phase alignment in multi-speaker setups. * **Protection:** Since it is an open-frame dynamic speaker, it requires an external housing or baffle to prevent "acoustic short-circuiting" and to protect the diaphragm from physical damage. * **Applications:** Ideal for IoT devices, security systems, scanners, and medical instrumentation where space is limited but clear audio feedback is required. --- ### ## Wiring Logic ```cpp // Example: Driving the speaker via a Microcontroller & Transistor (Basic PWM) // Note: Use a low-pass filter or dedicated Audio Amp for Hi-Fi results. const int speakerPin = 9; // PWM Output void setup() { pinMode(speakerPin, OUTPUT); } void playTone(int freq, int duration) { tone(speakerPin, freq, duration); delay(duration); } ```