Explore our elite selection of ultra-quiet 4K smart projectors and optical solutions directly from our production lines.
In the professional audio-visual market, the demand for 4K UHD projection has shifted from pure brightness metrics to acoustic refinement. Standard 4K projectors require intense light sources—often outputting upwards of 2,000 ANSI lumens—which generate substantial heat. Traditional cooling systems employ high-RPM fans, raising background noise levels to 35-45 decibels (dB). In boardrooms, smart classrooms, and home theaters, this ambient drone severely degrades the acoustic experience. Modern procurers now prioritize "Quiet 4K Projectors" running below 28dB, presenting a technical hurdle that only top-tier manufacturers can overcome.
An elite silent projector uses a closed-loop liquid-cooling assembly coupled with specialized heat pipes and extra-large, low-RPM turbine fans. It keeps internal DMD (Digital Micromirror Device) chips at safe operational temperatures without creating turbulent airflow. A critical development in quiet system design is the implementation of fully sealed optical engines. This design isolates light paths from dust while muffling fan and power supply vibrations, allowing devices to operate near the threshold of human hearing.
Youxi (Shenzhen) Technology Co., Ltd., founded in April 2021, specializes in the research and development, manufacturing, and integration of intelligent projection systems and wearable smart devices. Our company maintains end-to-end capabilities across the product lifecycle—from R&D and precision assembly to quality assurance—ensuring full compliance with international standards at every stage, from raw material procurement to finished product delivery. Committed to sustainable operations, Youxi integrates energy-efficient design, eco-conscious material selection, and waste-reduction practices into our business model, contributing meaningfully to green manufacturing initiatives.
Headquartered in Shenzhen—a leading innovation hub in Southern China—the company benefits from strategic proximity to the Hong Kong Port, with a travel time of approximately 40 minutes. To support scalable production, Youxi operates a dedicated assembly facility spanning approximately 1,000 square meters in Fenggang Town, Dongguan City (a 25-minute drive from headquarters). Which currently employs around 100 professionals and maintains a monthly production capacity exceeding 30,000 units. Its robust quality management system, certified supply chain, and vertically integrated operational framework ensure consistent product reliability and timely delivery.
Youxi offers comprehensive service solutions, including branded product development, OEM/ODM customization, and material-specified manufacturing (MSM). We also actively pursue strategic partnerships through authorized distribution and joint venture models. Prospective partners and clients are welcome to contact us at any time for technical consultation, collaboration proposals, or commercial inquiries.
Acoustic performance in optical devices starts with physical assembly. A minor vibration from a loose component or a misaligned mold housing can amplify motor sounds, turning a silent design into a noisy machine. Youxi maintains rigorous controls across all production steps, optimizing acoustic paths and component tolerances.
1）The mold and injection molding workshop is located next to our factory, equipped with sophisticated digital machines above conventional market standards to ensure a good foundation for each product.
Covering an area of 4000 square meters. The factory is equipped with production, injection molding, assembly, and testing workshops with large volume. After the recent large-scale adjustment and screening, there are about more than 100 qualified assembly workers which are reasonably distributed in different departments and all with good professional & ethical quality.
Modern workshop for production and assembly, we introduce the most advanced manufacturing equipment, CNC machines, high-end test instruments. In order to meet our clients’ different requirements, we set the workshops based on 5S standard dust-free available for every unit of product. , our monthly production and assembly capacity is up to 50000 units!
In order to ensure the performance of each machine, it is more possible to control the after-sale defect rate for customers, we have equipped two groups of test rooms, a total of 12 test rooms, by professional and senior quality inspectors to test the incoming material, the first inspection after finishing assembly, and sample inspection before shipment
The aging test room is next to the functional test room in order to improve work efficiency and reduce work errors, and can allow at least 200 machines for aging test at the same time.
Warehouse covering a 300 square meters area for the finished products next to packaging line.
The above is the introduction of the main departments of our production line, thank you very much for your patience to see the end, if you have any other questions, please feel free to leave a message to us, our professional technical or sales staff will answer your questions as soon as possible. I hope we'll see you there again!
Our supply chain network links components, technology hubs, and distribution pipelines to ensure smooth delivery. Backed by strategic transport networks and close proximity to shipping channels, our shipments reach global destinations reliably.
Southern China's Greater Bay Area manufactures over 80% of the world's commercial smart projectors. Choosing a factory with integrated design-to-assembly facilities provides key advantages:
Our quiet 4K projection systems are built to perform reliably in demanding workspaces and high-end residential setups.
Modern conference rooms use sensitive beamforming microphones. High projector fan noise disrupts these setups, causing audio echo and poor voice pickup. Our <25dB projection engines resolve this, ensuring clear audio and crisp 4K presentation details.
Classrooms require bright projections so students can read clearly. High brightness usually means loud fans, which can distract students. Our educational series provides high ANSI lumen output paired with low-RPM quiet cooling, helping students focus.
For true home cinema, maintaining a low noise floor is critical during quiet movie scenes. Our sealed LED optical engines deliver true-to-life color reproduction, native 4K scaling, and quiet operation for immersive viewing.
Outdoor setups demand durable, dustproof, and portable designs. Our IP5X sealed engines prevent dust ingress in open environments, keeping the hardware safe from elements while maintaining quiet operation.
Our pricing model is scaled to support wholesale volumes, system integrations, and custom OEM orders. Unit costs depend on the projection technology (LCD, LED, or DLP), raw ANSI brightness, and order volumes.
| Model Classification | Resolution & Light Source | Acoustic Decibel Rating | MOQ (Units) | Price Range (FOB Shenzhen) |
|---|---|---|---|---|
| Ultra-Portable Mini series | FHD 1080P (4K Support) LED | < 28 dB | 100 | $45 - $85 |
| Smart Education Series | 4K UHD LCD/LED (400 ANSI) | < 26 dB | 50 | $120 - $210 |
| Premium Sealed Cinema | True 4K UHD Sealed DLP / Laser | < 24 dB | 10 | $350 - $680 |
| Custom ODM / MSM Projects | Based on custom specs | Configurable | 500 | Custom Quote Required |
Note: The listed prices are estimates for standard models and may change based on component costs (like DMD chips or laser modules), customization requirements, and raw material availability. Contact us for a detailed quote.
Answers to common technical questions about sourcing quiet 4K projectors.
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