See how ProSilence FluxCore U-Boats control vibrations!
The video demonstrates how DreamScreen ProSilence FluxCore U-Boats use a progressive spring principle to decouple the floor structure from the rest of the building.
Instead of traditional hard rubber, a multi-stage silica-gel construction is used, which reacts differently depending on load and vibration energy.
The demonstration visualizes how the system absorbs and controls energy through a progressive spring system designed specifically for low-frequency structure-borne sound and vibrations.
Technical whitepaper
Download technical documentation with certificates and method description from our siv.ing. construction Eivind Lygren :
Click here to download the whitepaper

Eivind Lygren, siv.ing bygg
🌟 DreamScreen ProSilence FluxCore U-Boat 🌟
FluxCore U-Boats represent the next generation of structural decoupling for floor structures. Instead of a traditional homogeneous rubber product, FluxCore uses a progressive multi-stage spring system designed to control low-frequency energy far more effectively.
The system is designed for home cinemas, HiFi rooms, studios, music rooms and other installations where low-frequency structure-borne sound, vibrations and impact sound need to be minimized.
⚖️ FluxCore vs. traditional stepped soundboards
Traditional impact sound panels act as a compressible layer in a floating floor.
They can reduce mid- and high-frequency noise, but often have limited effect in the bass range, where heavy vibrations and structure-borne sound are most challenging.
The reason is that traditional solutions often have a relatively high dynamic stiffness, which results in an intrinsic resonance in the range 40-100 Hz.
This means that low frequencies can still propagate further in the structure.
FluxCore U-Boats, on the other hand, are developed as a true progressive spring-based decoupling system:
- Multi-stage construction with different levels of controlled flexibility
- Soft initial response at low loads
- Gradually increasing resistance at higher loads
- Large controlled elastic travel
- Natural resonance of the system ≈ 10 Hz
The result is significantly better control throughout the critical low-frequency range (20-80 Hz), where traditional solutions normally have limited effect.
FluxCore therefore acts more like a precision engineered damper than a traditional underlay.

This graph illustrates the difference between traditional tread plates and the spring-based approach used in the FluxCore system.
🚀 What makes FluxCore special?
- Progressive multi-stage spring response designed for low-frequency control 🔇
- Made of specially developed silica gel with very high vibration damping 🎧
- Controlled response at both low and high loads ⚙️
- Developed for standard 48 mm stud frames 🛠️
- Only approx. 34 mm build height including studs
- Long service life, high durability and temperature resistance ♻️
⚙️ How does FluxCore work?
FluxCore is installed underneath the studwork and creates a controlled resilient separation between the new floor and the existing structure.
Under normal loads, the system operates in a soft initial spring phase.
At higher loads, additional resistance is gradually activated to maintain stability and control.
This allows the floor to be both:
- Soft enough for effective low-frequency decoupling
- Stable enough for heavy loads such as grand pianos, cinema seats and heavy HiFi
The floor construction itself is normally sufficient to activate the FluxCore system’s progressive spring mode.
📌 Advantages
- Progressive spring-based decoupling 🔇
- Optimized for low-frequency structure-borne sound
- More controlled response than traditional rubber solutions
- Only approx. 34 mm total construction height
- Fits standard steel and wood studs (48 mm)
- Suitable for home theater, studio and HiFi room
- Easy installation without special tools 🧰
The result: A stable and effectively decoupled floor structure that reduces vibration, structure-borne sound and low-frequency energy significantly more effectively than traditional impact sound panels.
📎 Data sheet
🎥 Extra video: See the FluxCore system in action
🏭 Information from the manufacturer
📥 Download installation instructions in PDF



If you’re serious about isolating your studio or cinema room, decoupling the floor is a critical step.





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