The **ASX05404-HD-R** is a high-definition, micro-sized speaker manufactured by **PUI Audio**. It is part of their "AS" series, designed for high-fidelity audio output in compact electronic devices. --- ## 1. Technical Specifications The following table summarizes the primary electrical and physical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Transducer Type** | Dynamic (Moving Coil) | | **Impedance** | 4 Ohms (±15%) | | **Power Rating (Nominal)** | 2 Watts | | **Power Rating (Maximum)** | 3 Watts | | **Frequency Range** | 200 Hz ~ 20,000 Hz | | **Sensitivity (SPL)** | 84 dB @ 1W/0.5M | | **Diaphragm Material** | Polyetheretherketone (PEEK) | | **Magnet Material** | NdFeB (Neodymium) | --- ## 2. Key Features * **High Definition (HD) Audio:** Engineered with a wide frequency response (up to 20kHz), allowing it to reproduce clear high-frequency tones often lost in standard miniature speakers. * **PEEK Diaphragm:** The use of a PEEK diaphragm provides excellent thermal stability and mechanical strength, reducing distortion at higher volumes. * **Neodymium Magnet:** Utilizes high-grade Neodymium magnets to provide a strong magnetic field in a small footprint, resulting in high efficiency. * **Space-Saving Design:** Its rectangular form factor is optimized for slim devices where circular speakers would not fit. --- ## 3. Typical Applications The ASX05404-HD-R is commonly found in "Internet of Things" (IoT) devices and portable electronics where high-quality voice or music reproduction is required: * **Smart Home Devices:** Smart thermostats, security cameras, and video doorbells. * **Medical Equipment:** Portable monitors and diagnostic tools requiring audible alerts. * **Handheld Terminals:** POS systems and ruggedized mobile scanners. * **Robotics:** Compact audio feedback systems for consumer robots. --- ## 4. Mounting and Connection The device typically features **solder pads** for direct wire attachment. Because it is an "exciter" style micro-speaker, it is highly recommended to mount it within a tuned enclosure to achieve the best bass response and prevent acoustic cancellation.