For projects in Sydney
Auditorium acoustics and soundproofing in Sydney
A large hard volume where speech falls apart long before anyone calls the room echoey. The target is intelligibility at the back row, which is a reverberation and early reflection problem, not a loudspeaker problem. School halls, community centres and church buildings carry assembly, performance and sport in one hard volume.
- Reverberation time
- Set against use. Speech and music want different numbers, and a dual use hall needs a decision.
- Early reflections
- Shaped surfaces that send energy to the rear seats rather than absorbing everything.
- Rear wall
- The single worst surface in most halls, and the first one to treat.
- Quote
- From a plan and a section, within 48 hours
01 / The product
What this material is and where it earns its place in Sydney
A large hard volume where speech falls apart long before anyone calls the room echoey. The target is intelligibility at the back row, which is a reverberation and early reflection problem, not a loudspeaker problem.
School halls, community centres and church buildings carry assembly, performance and sport in one hard volume.
Work reaching us from Sydney is mostly apartment developments, offices, venues, schools, clinics, studios.
- Apartments at volume The same separating detail repeated across large developments. When it underperforms it underperforms in every unit, and that becomes a defect conversation.
- Mixed construction Concrete frames with lightweight internal walls. The frame blocks, the partitions often do not, and people assume the opposite.
- Venues under homes Late trading beneath apartments built around them, so the separating floor decides the hours.
- Reverberation time Set against use. Speech and music want different numbers, and a dual use hall needs a decision.
Full specification
Thickness, density, NRC by frequency, fire class, standard sizes and build-up detail for auditorium acoustics are on the main product page. This page covers what that means for a project in Sydney.
02 / The build-up
How the layers stack, from the structure inwards
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Layer 1
PET felt acoustic panels
A rigid non-woven panel pressed from 100% polyester fibre, a large part of it recycled. In Sydney, ducted systems and split units, with outdoor units close to boundaries where neighbour noise limits apply.
Direct to wall. Panel bonded or mechanically fixed flat to the substrate. Simplest, and the weakest at low frequency.
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Layer 2
Ceiling baffles and clouds
PET felt suspended from the soffit, vertically as baffles or horizontally as clouds. In Sydney, school halls, community centres and church buildings carry assembly, performance and sport in one hard volume.
Horizontal clouds. Flat rafts over the occupied zone, which also reflect early speech energy back down where it helps.
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Layer 3
Acoustic carpet and rugs
A tile carpet with a dense polyester face on a felt backing. In Sydney, school buildings run hard floors and high ceilings, and open plan learning areas make speech intelligibility the central problem rather than echo.
Zoned. Carpet in the circulation and meeting zones, hard floor elsewhere, so the treatment sits where the noise is made.
For a Sydney practice, the useful thing is a detail you can put in a drawing set, not a brochure. See how we support architects.
03 / Local conditions
What the buildings in Sydney do to the specification
- Apartments at volume
The same separating detail repeated across large developments. When it underperforms it underperforms in every unit, and that becomes a defect conversation.
- Mixed construction
Concrete frames with lightweight internal walls. The frame blocks, the partitions often do not, and people assume the opposite.
- Venues under homes
Late trading beneath apartments built around them, so the separating floor decides the hours.
- A long sea leg
One of the longer routes we run. Ordering to a real schedule matters, so we quote the full window.
- Assembly and performance rooms
School halls, community centres and church buildings carry assembly, performance and sport in one hard volume.
- School and campus buildings
School buildings run hard floors and high ceilings, and open plan learning areas make speech intelligibility the central problem rather than echo.
04 / Room by room
What each space in a Sydney project needs
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Reverberation time
Set against use. Speech and music want different numbers, and a dual use hall needs a decision. The same separating detail repeated across large developments. When it underperforms it underperforms in every unit, and that becomes a defect conversation.
- Wooden slat acoustic panels, MDF, FR MDF, HDF or HDHMR
- Ceiling baffles and clouds, 9 to 24 mm
- Acoustic carpet and rugs, High density polyester
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Early reflections
Shaped surfaces that send energy to the rear seats rather than absorbing everything. Concrete frames with lightweight internal walls. The frame blocks, the partitions often do not, and people assume the opposite.
- Wooden slat acoustic panels, 13-3, 14-2, 28-4 and 59-5
- Ceiling baffles and clouds, Made to the drawing, standard and custom
- Acoustic carpet and rugs, Felt
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Rear wall
The single worst surface in most halls, and the first one to treat. Late trading beneath apartments built around them, so the separating floor decides the hours.
- Wooden slat acoustic panels, 2440 x 192 mm and 2440 x 128 mm
- Ceiling baffles and clouds, Both faces work, which is why suspended area outperforms the same area laid flat
- Acoustic carpet and rugs, 64 sq ft per pack
Designers get colour, pattern and CNC options with the absorption figure attached to each. See how we work with interior designers.
04 / Climate
What the Sydney climate rules in and rules out
Sydney is hot summers, mild winters and a distinct wet season, and that narrows the material list before acoustics is discussed.
PET felt handles the wet months without absorbing moisture or feeding mould. Timber and wood wool want a ventilated cavity and a stable indoor RH.
The failure we design against here is wet-season humidity behind linings.
Where a consultant is already engaged on a Sydney project, we supply to their specification and send the test reports rather than describing them. More on working with acoustic consultants.
06 / Worth knowing
The six errors that cost the most
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Absorbing the whole room and losing the back rows
This is the one that comes back as a second fit-out rather than a snag.
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Adding speakers to fix a reverberation problem
This is the one that comes back as a second fit-out rather than a snag.
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Ignoring the rear wall because it is behind the audience
It sounds like a small detail until the room is finished and the complaint arrives.
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Treating it as a generic Sydney job
The same separating detail repeated across large developments. When it underperforms it underperforms in every unit, and that becomes a defect conversation.
05 / Getting it there
Supply into Sydney, start to site
| Ships from | Palwal, Haryana, India |
|---|---|
| Arrives at | Port Botany, then a short road run to site |
| Dispatch | 4 to 7 working days |
| Freight | Sea via Port Botany |
| Support | Drawings, build-ups, BOQ and material that arrives complete |
Standard items dispatch in 4 to 7 working days. The sea leg from India is long, so plan the full door to door window into the programme. We give real dates, not optimistic ones.
Sea freight into Port Botany, then a short road run to site. Air freight for samples and urgent quantities.
Questions from Sydney projects
What makes auditorium acoustics and soundproofing different in Sydney?
School halls, community centres and church buildings carry assembly, performance and sport in one hard volume. The same separating detail repeated across large developments. When it underperforms it underperforms in every unit, and that becomes a defect conversation.
Where should the budget go first on a Sydney project?
Reverberation time. Set against use. Speech and music want different numbers, and a dual use hall needs a decision. Early reflections. Shaped surfaces that send energy to the rear seats rather than absorbing everything.
Do you have an office or installation team in Sydney?
No. We manufacture in India and supply into Sydney. We give you drawings, build-ups, a BOQ and material that arrives complete, and we will tell you plainly when a job needs a local contractor we cannot be.
How does material get to a Sydney site?
ships from: Palwal, Haryana, India, arrives at: Port Botany, then a short road run to site, dispatch: 4 to 7 working days. Standard items dispatch in 4 to 7 working days. The sea leg from India is long, so plan the full door to door window into the programme. We give real dates, not optimistic ones.
What goes wrong most often on this kind of project?
Absorbing the whole room and losing the back rows. Adding speakers to fix a reverberation problem.
What do you need from us to quote?
A plan, a section through the critical partition or ceiling, and what the room is for. From that we can give a build-up and a BOQ rather than a price per square foot.
Next step
Tell us the room, we will tell you the build-up
Send what you have. We will give you a layer by layer build-up, a bill of quantities and a date material lands, and we will flag anything in the brief that will not achieve what you want.