Product Description
Engineered for high-impact voice projection, the JLH Portable Megaphone Speaker PCBA is a versatile all-in-one circuit board for DIY megaphone builds and industrial public address systems. This module combines a high-power audio amplifier with a digital signal processor (DSP) that supports 13 unique voice modes, including various sirens and alert tones. At Robogears, we recommend this PCBA for its integrated Bluetooth connectivity, allowing you to stream audio wirelessly or record voice messages directly for looped playback. Featuring a dedicated volume control potentiometer and energy-efficient Class D architecture, it is designed to drive standard megaphone horn speakers with maximum clarity and minimal battery drain.
Detailed Key Features
13 Multipurpose Voice Modes: Includes standard voice amplification along with 13 pre-programmed siren, whistle, and alarm tones for crowd control and emergency signaling.
Bluetooth & Recording Capability: Allows for wireless audio streaming from smartphones and features a built-in memory buffer for recording and looping custom voice announcements.
Integrated Volume Management: Features a smooth-acting potentiometer for real-time volume adjustment, ensuring distortion-free audio at high output levels.
Low Voltage Efficiency: Optimized to run on a single 3.7V 18650 Lithium-ion cell, making it perfect for portable, battery-powered handheld devices.
Compact PCBA Layout: Industrial-grade PCB design with clearly labeled solder pads for battery (B+/B-), speaker (SP+/SP-), and microphone (MIC) connections.
