They reached out with a clear request: replicate the same design language but at significantly larger sizes, specifically \u00d81150mm and \u00d81500mm<\/strong>, while maintaining the same slim profile and integrated acoustic performance.<\/p>\n\n\n\n This marked the starting point of a project that would require full engineering involvement rather than simple product supply.<\/p>\n\n\n\n <\/p>\n\n\n\n The core limitation became clear immediately. The existing product was engineered at a 500mm diameter<\/strong>, where structural stability, material distribution, and light performance were already optimized. Scaling this design directly to 1150mm and 1500mm<\/strong> was not a matter of proportionally increasing dimensions.<\/p>\n\n\n\n At 500mm, the frame can maintain rigidity with minimal reinforcement, and the acoustic material integrates without affecting structural balance. At over one meter in diameter, the same structure behaves differently. The load distribution changes, and the risk of deformation increases significantly, especially in suspended installations.<\/p>\n\n\n\n At the same time, the client insisted on maintaining a slim and refined profile<\/strong>, similar to the original 500mm version. This introduced a direct conflict. Increasing size typically requires additional structural support, which increases thickness. Reducing thickness to maintain aesthetics weakens the structure.<\/p>\n\n\n\n This gap between standard product capability (500mm)<\/strong> and project requirement (1150mm \/ 1500mm)<\/strong> made it impossible to rely on existing designs. A fully customized solution was required to bridge this difference without compromising performance.<\/p>\n\n\n\n <\/p>\n\n\n\n Once the size requirement was defined, the engineering challenges became more complex. A large circular structure behaves differently under suspension compared to smaller fixtures. The increased diameter creates higher bending stress across the frame, which can lead to long-term deformation if not properly reinforced.<\/p>\n\n\n\n At the same time, the requirement for a slim design meant that traditional reinforcement methods could not be applied. Adding bulk would have solved the strength issue but would have failed the visual requirement defined by the client.<\/p>\n\n\n\n The integration of PET acoustic material added another constraint. The material needed to be positioned in a way that preserved its sound absorption performance while not interfering with the structural integrity of the fixture. Improper placement could result in uneven weight distribution or reduced acoustic effectiveness.<\/p>\n\n\n\n Lighting performance also had to remain consistent across the larger surface area. Ensuring uniform illumination without hotspots or dim zones required careful planning of LED placement and optical design.<\/p>\n\n\n\n These challenges were interconnected. Solving one without considering the others would have created new problems, which is why a coordinated engineering approach was necessary.<\/p>\n\n\n\n <\/p>\n\n\n\n The transition from concept to production began with detailed CAD modeling. The engineering team recreated the design at both 1150mm and 1500mm diameters<\/strong>, analyzing how the structure would behave under real installation conditions.<\/p>\n\n\n\n The internal frame was redesigned to distribute weight evenly across the entire diameter. Instead of simply increasing material thickness, the structure was optimized to maintain strength while preserving the slim profile. This allowed the fixture to remain visually consistent with the original 500mm version while supporting the larger scale.<\/p>\n\n\n\n Scaling the fixture to 1500mm introduced a structural risk that is not present in standard 500mm designs. At this diameter, a fixture relying only on lightweight acoustic material would gradually lose its flatness and begin to sag at the center under its own weight.<\/p>\n\n\n\n To prevent this, internal aluminum structural ribs were integrated into the frame to support the light engine and maintain uniform load distribution. This ensured that the fixture remained visually flat and structurally stable after installation, even at larger diameters.<\/p>\n\n\n\n Simultaneously, the lighting layout was adjusted to ensure even distribution across the expanded surface area. LED positioning and optical components were refined to maintain uniform brightness without increasing glare.<\/p>\n\n\n\n Each iteration of the design was evaluated for manufacturability. The goal was not only to achieve technical feasibility but also to ensure that the design could be produced consistently within a controlled timeline.<\/p>\n\n\n\n Through this process, the concept evolved into a system that could be reliably manufactured and installed without unexpected performance issues.<\/p>\n\n\n\n The acoustic structure was designed using vertical leaf-shaped blades rather than flat panels. These blades, typically manufactured from PET material in controlled thickness ranges, were arranged in a radial pattern across the circular frame.<\/p>\n\n\n\n This configuration was not only for visual differentiation. The vertical blade arrangement increases the effective surface area within the same fixture volume, allowing sound waves to interact with multiple surfaces instead of a single plane.<\/p>\n\n\n\n More importantly, the geometry causes sound waves to diffract as they pass through and around the blades. Instead of reflecting directly back into the space, sound energy is scattered and absorbed from multiple angles. This creates a more efficient acoustic behavior compared to flat-panel designs.<\/p>\n\n\n\n From a performance standpoint, this can be described as volumetric absorption, where the three-dimensional structure enhances sound capture without increasing the overall thickness of the fixture.<\/p>\n\n\n\n <\/p>\n\n\n\n The choice of PET acoustic material played a central role in the success of the project. In this application, PET was not used as a secondary feature but as an integral part of the system. As shown in our Acoustic Finish Color Card, the project utilized specific blue tones to align with the client’s corporate identity while maintaining an NRC rating of up to 0.95. While metrics like NRC are often used to evaluate acoustic materials, their interpretation in integrated lighting systems can be more complex. In fact, many professionals misunderstand how NRC applies to suspended acoustic fixtures, especially when geometry and placement affect real performance. For a deeper explanation, you can explore our detailed guide on why acoustic lighting does not have an NRC rating<\/strong><\/a>. <\/p>\n\n\n\n Its fibrous structure allows it to absorb mid-to-high frequency sound, which is the most common type of noise in office environments. This includes speech, movement, and ambient background noise. By integrating PET directly into the fixture, the lighting system contributed to reducing reverberation without requiring additional acoustic panels.<\/p>\n\n\n\n Equally important was its flexibility. PET can be cut and shaped without losing its acoustic properties, allowing it to conform to the circular design and maintain a clean visual appearance. This made it possible to adapt the design to larger sizes without introducing visual inconsistencies.<\/p>\n\n\n\n Its lightweight nature also reduced the load on the overall structure, which was critical when scaling up to 1150mm and 1500mm. This helped maintain the balance between structural performance and design intent.<\/p>\n\n\n\n <\/p>\n\n\n\n Customization in this project directly addressed the limitations created by the size difference. Instead of forcing the client to adapt to a 500mm standard product, the design was re-engineered to match the required dimensions and performance criteria.<\/p>\n\n\n\n Color options were provided to align with the interior design, ensuring that the acoustic material integrated seamlessly into the space. Mounting methods were adjusted to ensure stable suspension at larger sizes, reducing the risk of misalignment during installation.<\/p>\n\n\n\n Lighting parameters were also customized to maintain consistency across both fixture sizes. Without this adjustment, the larger fixture could have produced uneven lighting, which would have affected the usability of the space.<\/p>\n\n\n\n By resolving these variables during the design phase, the project avoided potential issues during installation and operation. This reduced uncertainty for the client and ensured that the final result matched expectations.<\/p>\n\n\n\n The selected configuration reflects a balance between performance and practicality. A color temperature of 4000K was used to provide neutral white light suitable for work environments, avoiding the warmth of residential lighting and the harshness of higher Kelvin values.<\/p>\n\n\n\n A CRI above 90 ensures that colors remain accurate under the light, which is important in spaces where visual clarity affects daily tasks. The UGR value below 22 controls glare, preventing discomfort during extended use.<\/p>\n\n\n\n For the larger 1500mm fixture, the lighting design required additional consideration. While the overall diameter was 1500mm, the effective light-emitting area was 600mm, meaning the light had to be distributed evenly across a much wider surface.<\/p>\n\n\n\n To achieve this, a wide beam angle optical setup combined with high-transmittance diffusers was used. This allowed the light to spread smoothly from the center toward the outer edges, preventing dark zones and ensuring consistent illumination across the entire fixture.<\/p>\n\n\n\n The combination of aluminum and PET allows the fixture to maintain structural strength while delivering acoustic performance. Aluminum supports heat dissipation and durability, while PET contributes to sound absorption.<\/p>\n\n\n\n These specifications were not chosen independently. Each parameter was aligned with the project\u2019s functional and environmental requirements.<\/p>\n\n\n\n Once the design was finalized, production was completed within 5\u20137 days<\/strong>. This was made possible by resolving all major variables during the engineering phase.<\/p>\n\n\n\n Because the structure, materials, and lighting configuration had already been validated, production could proceed without interruptions. Components were prepared in advance, and assembly processes were optimized to maintain consistency across both sizes.<\/p>\n\n\n\n For the client, this timeline was critical. The lighting needed to align with a broader construction schedule, and delays would have affected other stages of the project. By maintaining a controlled production process, the delivery remained on schedule without compromising quality.<\/p>\n\n\n\n <\/p>\n\n\n\n After installation, the impact of the fixtures was evident in both visual and acoustic terms. The lighting provided consistent illumination across the space, eliminating uneven brightness and reducing glare. This approach aligns with modern workspace strategies where Acoustic panel pendant lighting for offices<\/strong> <\/a>combines sound control and lighting in a single system.<\/p>\n\n\n\n The integration of PET material reduced background noise and echo, improving speech clarity within the environment. This made the space more suitable for meetings and collaborative work.<\/p>\n\n\n\n Visually, the larger fixtures established a stronger presence within the interior. Their scale and form contributed to the overall design, turning them into a defining feature rather than a secondary element.<\/p>\n\n\n\n The result was a space that functioned more effectively while also presenting a cohesive visual identity.<\/p>\n\n\n\n The installed fixtures were also documented through on-site photographs shared by the client, showing the final integration within the space. These images clearly demonstrate how the leaf-shaped acoustic structure interacts with the ceiling layout while maintaining consistent lighting distribution.<\/p>\n\n\n\n The visual outcome confirms that the fixtures not only met performance expectations but also aligned with the architectural intent of the project, reinforcing their role as both functional and design-driven elements.<\/p>\n\n\n\n This project highlights the importance of involving engineering early in the process. By addressing structural, acoustic, and lighting requirements together, the final solution avoided the compromises typically associated with standard products.<\/p>\n\n\n\n From a buyer\u2019s perspective, this approach reduces risk. The design is validated before production, installation is more predictable, and performance outcomes are aligned with expectations.<\/p>\n\n\n\n Clients choose us not just for lighting products, but for engineering-driven solutions. When project requirements go beyond standard dimensions, many suppliers step back due to technical limitations. In this case, our in-house engineering validation and material expertise allowed us to resolve structural, acoustic, and design constraints within a single integrated solution.<\/p>\n\n\n\nWhy the Required Design Could Not Be Achieved Using Standard Acoustic Lighting Products<\/strong><\/h2>\n\n\n\n
![\"Acoustic](\"https:\/\/feltlite.com\/wp-content\/uploads\/2026\/04\/B1.jpg\" "\\"Acoustic")
<\/figure><\/div>\n\n\n\nWhat Made Large Diameter Acoustic Pendant Lights Structurally and Functionally Challenging<\/strong><\/h2>\n\n\n\n
![\"Acoustic](\"https:\/\/feltlite.com\/wp-content\/uploads\/2026\/04\/B2.jpg\" "\\"Acoustic")
<\/figure><\/div>\n\n\n\nHow Engineering Validation Turned a Concept into a Manufacturable Lighting System<\/strong><\/h2>\n\n\n\n
![\"Acoustic](\"https:\/\/feltlite.com\/wp-content\/uploads\/2026\/04\/B3.jpg\" "\\"Acoustic")
<\/figure><\/div>\n\n\n\nHow the Leaf-Shaped Acoustic Design Increased Sound Absorption Efficiency<\/strong><\/h2>\n\n\n\n
Why PET Acoustic Material Was Critical for Achieving Both Sound Absorption and Design Flexibility<\/strong><\/h2>\n\n\n\n
![\"Acoustic](\"https:\/\/feltlite.com\/wp-content\/uploads\/2026\/04\/b4.jpg\" "\\"Acoustic")
<\/figure><\/div>\n\n\n\nHow Customization Helped Eliminate Design Constraints and Reduced Project Risk<\/strong><\/h2>\n\n\n\n
![\"Acoustic](\"https:\/\/feltlite.com\/wp-content\/uploads\/2026\/04\/B5.jpg\" "\\"Acoustic")
<\/figure><\/div>\n\n\n\nThe Final Technical Configuration that Balanced Lighting Quality, Acoustic Performance, and Cost<\/strong><\/h2>\n\n\n\n
Model No.<\/strong><\/td> Diameter<\/strong><\/td> Light Size<\/strong><\/td> CCT<\/strong><\/td> CRI<\/strong><\/td> UGR<\/strong><\/td> Material<\/strong><\/td> Voltage<\/strong><\/td> IP Rating<\/strong><\/td> Unit Price<\/strong><\/td><\/tr> AR1150-400<\/td> 1150mm<\/td> 400mm<\/td> 4000K<\/td> \u226590<\/td> <22<\/td> Aluminum + PET<\/td> AC220\u2013240V<\/td> IP20<\/td> $228.6<\/td><\/tr> AR1500-600<\/td> 1500mm<\/td> 600mm<\/td> 4000K<\/td> \u226590<\/td> <22<\/td> Aluminum + PET<\/td> AC220\u2013240V<\/td> IP20<\/td> $342.9<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n How a Compressed Production Timeline Was Achieved Without Affecting Quality or Consistency<\/strong><\/h2>\n\n\n\n
What Changed After Installation in Terms of Lighting Comfort, Acoustic Performance, and Spatial Experience<\/strong><\/h2>\n\n\n\n
![\"Acoustic](\"https:\/\/feltlite.com\/wp-content\/uploads\/2026\/04\/B6.jpg\" "\\"Acoustic")
<\/figure><\/div>\n\n\n\nWhy This Project Reflects the Real Value of Engineering-Led Custom Acoustic Lighting Solutions<\/strong><\/h2>\n\n\n\n