Private Residence

Project Overview

Project Overview

A homeowner in Sungai Long, Selangor sought a theatre-grade acoustic environment for a dedicated home cinema and entertainment room. The goal was to replicate the immersive sound quality of a commercial cinema while maintaining complete acoustic isolation from the rest of the residence. The room was designed around a high-end surround sound system with multiple subwoofers, placing extreme demands on both sound containment and internal acoustic performance.

Acoustic Challenges

Home cinema systems with reference-level playback produce sustained sound pressure levels above 100 dB, with low-frequency effects channels pushing significant energy below 80 Hz. In a residential setting, these frequencies travel easily through conventional walls, floors, and ceilings, creating audible rumble and vibration in adjacent rooms. The Sungai Long residence had standard reinforced concrete and brick construction — materials that conduct structure-borne vibration efficiently. Walls shared with bedrooms and a living area meant that even moderate listening volumes could disturb occupants elsewhere in the house, particularly during evening and night-time use.

Beyond containment, the interior acoustics of the room needed careful management. Bare walls and hard ceiling surfaces cause excessive reverberation that smears dialogue, blurs surround effects, and produces uneven bass response. A cinema room requires controlled reflections and appropriate absorption to deliver the clarity and spatial imaging that justify premium audio equipment.

Materials and Installation Approach

SG-DM102 Vibration Damping Mat was applied to all wall and ceiling substrates as the initial treatment layer. This 2 mm mat, formulated with fine iron powder and mineral composite, provides mass loading and damps resonance in the existing structure before the decoupled framing system is built over it.

SG-CD50 Ceiling Shock Dampers and SG-WD50 Wall Shock Dampers were installed to support the independent metal stud framework for ceiling and walls respectively. Both models feature a heavy-duty spiral spring combined with polymer damping rubber, achieving a natural frequency below 5 Hz. With each unit rated for 50 kg, the dampers were distributed to carry the full weight of the acoustic assembly while providing complete vibration isolation from the building structure. This approach effectively creates a room-within-a-room, where the acoustic surfaces float independently of the house frame.

SG-E17 Composite Sound Insulation Boards were mounted to the isolated framework. The 18 mm boards use an 8 + 2 + 8 configuration of Calcium Silicate and EPDM, rated at STC 33. Combined with Pro370 Safe ‘n’ Silent as a resilient interlayer, the assembly delivers high transmission loss across the frequency spectrum. All joints and penetrations were sealed to maintain an airtight acoustic envelope.

AcousPanel polyester fibre panels were installed as the interior finish, selected for both their acoustic performance and aesthetic flexibility. With an NRC range suited to mid-to-high-frequency absorption, these panels reduced reverberation time to an appropriate level for cinema playback. The range of colour options allowed the homeowner to achieve a dark, theatre-style interior finish.

Results

The finished cinema room delivered full acoustic isolation from the rest of the residence. Reference-level playback, including deep bass effects from action films and concert recordings, produced no perceptible sound in adjacent rooms. Internal acoustics provided clear dialogue reproduction, precise surround imaging, and even bass distribution throughout the seating area. The homeowner achieved a genuine cinema experience without compromise to household comfort.