See what was tested, how it was installed and what the results actually mean. Published manufacturer evidence, with the original documents one click away.
Select the same fullness and wall cavity for every fabric. A missing result means that configuration has not been transcribed here—not that the fabric has zero absorption.
Nominal mounting conditions are matched here. Check individual reports for specimen details and test methods before treating results as directly interchangeable. SAC classification is not a room noise-reduction percentage, an octave-band coefficient or a sound-insulation rating.
02 / LOOK BEYOND ONE NUMBER
Performance changes with frequency.
This documented example shows Acoustic Molton in one tested assembly. We only display frequency data that has been transcribed from its report.
The report, the rating and the installed room each answer a different question. Keep that context with the number.
01 / MEASUREMENT
Absorption in a chamber.
The example report measures random-incidence sound absorption, generally to BS EN ISO 354:2003. Reverberation is compared with and without the specimen in the chamber.
The reported values belong to the stated specimen area, fullness and mounting. The diagram above explains the principle; it does not reproduce the laboratory layout.
αs is the measured coefficient series. αp is the practical octave-band series; this report states BS EN ISO 11654:1997. The report also lists αw and its absorption class.
NRC is listed separately under ASTM C 423-01. The brochure’s “SAC classification” wording is retained in our configuration tables, so it is not silently relabelled as another metric.
03 / APPLICATION
A room needs its own review.
An absorption test is not a transmission-loss or soundproofing test. It cannot, on its own, tell you how many decibels of noise will be stopped between rooms.
Match the fabric and tested construction first. Then consider treated area, room geometry, existing surfaces and use. Our room calculator is an estimate with explicit assumptions.
Transcribed and checked against the manufacturer’s Acoustic Solutions Brochure on 19 October 2026. This is a source check, not an independent re-test by Studio Curtains. Request the underlying report where the brochure lists it as available on request.
ADDITIONAL EVIDENCE
Fire & light-control documentation.
Fabric fire certificates and light-control specifications are available in the document library. We have not converted these into a blanket pass/fail claim for a finished installation.
Check the selected colour, fabric finish, certificate scope and project requirements with the relevant documents.