PCBA Consumer Electronics SMT Portable Audio Mixer Printed Circuit Board Assembly

PCBA  Images

About TECircuit

Found: TECircuit has been operating since 2004.

Location: An electronics manufacturing service(EMS) provider located in Shenzhen China.

Item: Customizable EMS PCB, offers a full range of one-stop shop services.

Service: Printed Circuit Board (PCB)and Printed Circuit Board Assembly(PCBA), Flexible Printed Circuit Board(FPC), Components Sourcing, Box-Building, Testing.

Quality Assurance: UL,ISO 9001, ISO 14001, ISO 13485, ITAF 16949 andcomplied with ROHS and REACH.

Factory Pictures:
Company's own plant : 50,000 sqm; Employees : 930+; Monthly production capacity : 100,000 m2

PCBA  Applications

• Live Music and Performance Mixing: The PCBA enables musicians and performers to blend multiple instruments and microphones on stage. Its design prioritizes reliable, low-noise operation for clear sound reinforcement in live settings.

• Field Recording and Audio Capture: It allows sound recordists to combine audio from several microphones or sources directly on location. Portable mixers are designed for portability and can be powered by batteries, making them suitable for remote use.

• Podcasting and Content Creation: The PCBA is central to mixing multiple microphones and audio sources for professional-quality podcasts and online content. Features like built-in USB audio interfaces (in some models) facilitate direct connection to computers for recording.

• Electronic Music and Synthesizer Setup: It serves as a hub for electronic musicians to connect and blend multiple synthesizers, drum machines, and other gear. The compact size and specific input/output configurations make them ideal for desktop setups.

• Public Address and Announcement Systems: The mixer PCBA is used in small-scale PA systems to manage microphone and background music sources for speeches and announcements in venues like schools or small halls.

PCBA Features 

1. Low-Noise Operational Amplifiers: The PCBA typically incorporates low-noise op-amps, such as the TL072, which are chosen for their good audio performance and low power consumption, directly contributing to clear sound and extended battery life.

2. Efficient Power Management System: The PCBA is designed for optimal power efficiency. It can run on battery power for extended periods (e.g., up to 100 hours with a standard 9V battery), and often includes power regulation and protection circuits, such as reverse polarity protection, to safeguard the components.

3. Multiple Input and Output Channel Control: The board provides circuitry for multiple input channels, each with independent level control (via potentiometers), and a master output control. The circuit design often uses inverting amplifier configurations to maintain the correct audio phase between input and output.

4. Compact and Robust PCB Design: The circuit board is laid out for compactness and portability, often using a single PCB that also integrates mechanical elements like a custom battery holder. The design prioritizes component placement for ease of assembly and use.

5. Signal Integrity and Headroom Management: The PCBA's circuitry is designed to handle a specific range of input signal levels (e.g., up to 6 Vp-p) and provides sufficient headroom to minimize clipping, especially when operating on battery power as the supply voltage decreases

FAQ

​PCB & PCBA  Description​

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