Q140
Dual-Cavity Acoustic Wall System
The Q140 Dual-Cavity Acoustic Wall System is a free-standing acoustic partition for situations where there is no solid base wall to line. Deep Main 112MS and Sub 114SS cassette keels frame a wide dual cavity around a central partition board, giving two independent air gaps that break the airborne transmission path.
Filled with mineral / synthetic wool and finished with composite insulation board and plasterboard, the Q140 delivers STC 57 / Rw 57 dB as a complete stand-alone wall - suitable for new room divisions and back-of-house separation.
Exploded Mounting Structure
9 layers · top to bottom
Layer Build-up
- 1
With/Without Concrete Wall
- 2
Min. 80 kg/m³ Mineral / Synthetic Wool
600 × 1200 × 50 mm
- 3
Partition Board
- 4
Main Cassette Keel 112MS
- 5
Sub Cassette Keel 114SS
- 6
SG-DM452 Vibration Damping Tape
45 × 6000 × 2 mm
- 7
Composite Sound Insulation Board
1200 × 1200 × 16–18 mm
- 8
Plaster Board (by others)
- 9
AcousPanel or Other Finishes
Layer Specifications
| Layer | Product | Specification | Application |
|---|---|---|---|
| Absorption | Mineral Wool / Synthetic Wool | 600 × 1200 × 50 mm | Uses sound absorption to enhance insulation |
| Structure | Cassette Keel | Main: 112 mm | Sub: 114 mm | Secure fit with preserved acoustic decoupling |
| Damper | Vibration Damping Tape | 45 × 6000 × 2 mm | Minimized rigid connections |
| Insulation | Composite Sound Insulation Board | 1200 × 1200 × 16–18 mm | Greatly improves sound insulation performance |
System Description
Panel 1
1 × 6 mm Fibre Cement + 1 × 1 mm Rubber + 1 × 6 mm Fibre Cement
Frame 1
0.55 mm steel stud (50 × 38 mm), spacing 600 mm, cavity width 50 mm + 50 mm Rockwool (80 kg/m³)
Panel 2
1 × 10 mm Plasterboard
Frame 2
0.55 mm steel stud (50 × 38 mm), spacing 600 mm, cavity width 50 mm + 50 mm Rockwool (80 kg/m³)
Panel 3
1 × 6 mm Fibre Cement + 1 × 1 mm Rubber + 1 × 6 mm Fibre Cement
Details
Panel size 2.4 m × 2.4 m · Partition surface mass 54.4 kg/m² · Mass-air-mass resonant frequency 134 Hz
Acoustic Performance
Sound Insulation Prediction
All STC, OITC and acoustic performance figures are estimated / simulated values (INSUL Sound Insulation Prediction v9.0.22, © Marshall Day Acoustics 2017) intended solely as design references - not guaranteed field performance. Final results depend on site conditions, construction details and installation quality, beyond the control of INSUL.
Products Used in This System
Specify the Q140 System
For Your Project
Our technical team can adapt this system to your site conditions and provide a full installation specification and quotation.
