FI-CS3
3-inch Constant Resistance Magnetic Ceiling Speaker
The FROG-IS FI-CS3 is a high-performance 3-inch full-range constant resistance magnetic ceiling speaker, meticulously engineered to deliver exceptional audio quality for a multitude of indoor audio applications. Whether you’re looking to create a soothing background music system for your home, a clear and reliable public address system for commercial spaces, or an immersive audio setup for hotels and hospitality venues, the FI-CS3 stands out as a versatile and powerful solution.
Designed with a focus on both acoustic excellence and practicality, this speaker seamlessly blends into any ceiling environment while delivering rich, detailed sound that brings music, announcements, and audio content to life. Its magnetic ceiling-mount design not only ensures a secure and flush installation but also allows for easy integration into various architectural styles, making it a top choice for audiophiles, installers, and businesses alike.
- Premium Driver Configuration: Equipped with a 3-inch high-flux 25-core neodymium driver. The diaphragm is composed of paper drum paper, wool, and fiber, ensuring rich, detailed, and balanced sound reproduction across the frequency spectrum.
- Durable Grille Design: Features a silver stainless steel mesh grille that is not only aesthetically pleasing but also highly durable, resistant to corrosion and wear, while effectively protecting the internal driver.
- Optimal Electrical Performance: With an impedance of 8ohm, a rated power of 30W, and a maximum power of 60W, it can handle both moderate and peak audio demands. The sensitivity of 96±2dB ensures efficient sound output with minimal power input.
- Wide Frequency Response: Covers a frequency range of 70HZ-15KHZ, enabling it to reproduce deep bass, clear mid-ranges, and crisp high frequencies, catering to a wide variety of music genres and audio content.
- Precise Sizing: Finished size is Φ116.8mm*63.5mm, with an installation cutout of Φ98mm*60mm, allowing for easy integration into standard ceiling openings. Weighs only 0.3kg, making it lightweight and easy to install.
- Superior Sound Quality: The combination of advanced driver technology and diaphragm materials results in natural, immersive sound with excellent clarity and dynamics.
- Durability & Longevity: The stainless steel mesh grille and high-quality driver components ensure the speaker can withstand long-term use in different environmental conditions, making it a reliable choice for both residential and commercial use.
- Easy Installation: The standardized sizing and lightweight design simplify the installation process. It can be seamlessly mounted into ceilings with minimal effort and tools.
- Suitable for a wide range of applications, from home theaters and living room background music to office PA systems and retail store audio setups.
| Impedance | 8ohm |
| Grille | Silver stainless steel mesh |
| Driver | 3-inch high-flux 25-core neodymium driver with one passive radiator |
| Power | Rated power 30W, maximum power 60W |
| Sensitivity | 90±2dB |
| Frequency Range | 70HZ-15KHZ |
| Finished Size | Φ116.8mm*63.5mm |
| Installation Cutout | Φ98mm*60mm |
| Net Weight | 0.3kg |
| Color | Silver |




