PCBA Consumer Electronics Soundbar With Subwoofer SMT 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

• Home Theater and Movie Enhancement: The PCBA processes multi-channel audio formats (like Dolby Atmos or DTS:X) from TVs or media players, driving the main soundbar speakers for clear dialogue and surround effects, while wirelessly commanding the subwoofer to produce deep, impactful bass for a cinematic audio experience.

• High-Fidelity Music Playback and Streaming: Functions as a primary audio system for streaming music via Wi-Fi (Chromecast, AirPlay 2) or Bluetooth, utilizing its Digital Signal Processor (DSP) to optimize audio profiles for music, and synchronizing the subwoofer to faithfully reproduce low-end frequencies from tracks.

• Gaming Audio Immersion: Enhances video gaming by processing low-latency audio from consoles or PCs, creating a wide soundstage for spatial awareness in games and ensuring precise synchronization between on-screen action, sound effects from the bar, and rumble effects from the subwoofer.

• Commercial and Hospitality Audio Solutions: Deployed in hotels, bars, and retail spaces as a streamlined, high-quality audio solution. The PCBA enables easy source switching, volume zoning, and delivers full-range sound that fills a space, with the subwoofer adding presence without a complex receiver setup.

• TV Audio Clarification and Voice Enhancement: Specifically processes TV audio tracks to isolate and enhance dialogue frequencies, making speech clearer and easier to understand over background music and effects, a key feature for news watching and general television viewing.

PCBA Features 

1. Multi-Channel Digital Signal Processor (DSP) and Amplifier Array: The PCBA integrates a powerful DSP that decodes audio formats and applies sound profiles (e.g., movie, music, night mode). It is paired with a multi-channel Class-D amplifier array to independently power the soundbar's left, center, right, and surround/height speaker drivers.

2. Dedicated Subwoofer Control and Wireless Link: Features a dedicated microcontroller and a proprietary, low-latency wireless RF transceiver (e.g., 5.8 GHz) to maintain perfect sync with the wireless subwoofer. It sends the filtered low-frequency effects (LFE) channel and control signals to the subwoofer's own amplifier PCB.

3. Comprehensive Input/Output Matrix: The board includes an HDMI eARC/ARC receiver for a single-cable, high-bandwidth connection from the TV; optical (Toslink) and analog audio inputs; a Bluetooth/Wi-Fi module for streaming; and sometimes a USB port for local file playback.

4. Room Calibration and Microphone Input: Higher-end models include a microphone input jack and circuitry to support an auto-calibration system. The PCBA plays test tones, analyzes the room's acoustics via the microphone, and uses the DSP to automatically adjust EQ and speaker delay for optimal sound in the specific room.

5. Advanced Power Management and Thermal Control: Utilizes an efficient Power Management IC (PMIC) to distribute stable power to digital and analog sections, and to the high-power amplifier stages. It includes thermal sensors and protection circuits to manage heat dissipation during high-volume operation.

6. User Interface and Status Display: Designed with drivers for front-panel LEDs, displays, or touch controls, and includes an IR receiver for remote control. It manages source selection, volume control, and audio mode changes, providing clear status feedback to the user.

7. Crossover and Bass Management Circuitry: Contains precise electronic crossover filters, typically managed in the DSP, that seamlessly split the incoming audio signal. It directs mid and high frequencies to the soundbar's amplifiers and routes only the low bass signals to be transmitted to the subwoofer.

FAQ

​PCB & PCBA  Description​

PCB Assembly OEM Service

Electronic Components Material Purchasing

Bare PCB Fabrication

Cable, Wire-harness Assembly, Sheet Metal, Electrical Cabinet Assembly Service

PCB Assembly Service: SMT, BGA, DIP

PCBA test: AOI, In-Circuit Test (ICT), Functioal Test (FCT)

Conformal Coating Service

Prototyping and Mass Production

PCBA ODM service

PCB Layout, PCBA Design According To Your Idea

PCBA Copy/Clone

Digital Circuit Design / Analog Circuit Design/ lRF Design /Embedded Software Design

Firmware and Microcode Programming Windows Application (GUI) Programming/Windows Device Driver (WDM) Programming

Embedded User Interface Design / lSystem Hardware Design

Ratings & Review

Overall Rating

5.0

Based on 50 reviews for this supplier

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E

Electronic PCB Circuit Board Assembly Manufacturing Smart Door Locks PCBA

Germany Sep 11.2025

Helpful (399)

We are very satisfied with the PCBA quality and overall service. The boards were well assembled, testing was thorough, and delivery was on time. Communication was efficient and technical support was responsive. A reliable manufacturer for long-term cooperation.

S

Silkscreen Color Industrial Control PCB Assembly PCBA Electronic Circuit Board Assembly

France Jun 12.2025

Helpful (158)

Quick note – this supplier’s PCBA work is top-notch. On-time delivery, zero defects found in our inspection, and their pricing is competitive too. Highly recommend for future BOMs.

Q

Quick Turnaround Consumer Electronics PCB Assembly Multilayer PCB Manufacturing

Italy Mar 5.2025

Helpful (458)

Just a quick note to say how impressed we are with your PCBA products! The quality is consistent with our specs, delivery was right on schedule, and your team’s support made the whole process seamless. We’ll definitely keep coming back for future orders.