ProSilence: SINTEF 102036124-2-1, test date 25 August 2026, marked provisional/internal use only. The manufacturer-corrected nominal build-up is 98 mm timber frame + four 12.5 mm gypsum-fibre boards (50 mm total) + 34 mm clip offset on the inside = 182 mm. This replaces the earlier 150 mm figure, which omitted the clip offset. The dimension is calculated from the stated component sizes; the unchanged acoustic values come from SINTEF laboratory measurements.
IsoMax AT001058: Kinetics identifies Riverbank Acoustical Laboratories / RAL TL02-40 as the external testing agency for this wall. Kinetics separately publishes 31.5–80 Hz values and states that these supplementary values were calculated at additional test frequencies from measurements made using ASTM E90-99 procedures; Kinetics explicitly classifies them as unofficial research-and-development data, not part of the standard test range. The 50/63/80 Hz points shown here are therefore external-lab-derived measurements with manufacturer-published supplementary calculations, not an in-house simulation.
Knauf W623: Knauf report SWC 21 093-05 documents an approximately 185 mm finished wall depth and third-octave sound reduction of 19.6 dB at 50 Hz, 23.7 dB at 63 Hz and 39.0 dB at 80 Hz. The test was carried out at Knauf Gips KG Iphofen to ISO 10140-2 and is used here because the complete wall depth is closely matched to the 182 mm FluxCore assembly.
MuteClip Double: iKoustic publishes the 50/63/80 Hz values in its MuteClip Systems Performance Data and links that material as lab-performance data. The cited sheet lists source and receiving room volumes and the treated timber-wall construction, but it does not identify the laboratory or an independent report number. We therefore label it as manufacturer-published lab-performance data with the laboratory not identified, rather than calling it independently verified. Approximately 184 mm remains a calculated total, not a measured overall dimension in the sheet.
GenieClip TL07-670: Pliteq publishes TL07-670 as a test-report reference for the 197 mm timber wall and publishes 31 dB at 80 Hz and 39 dB at 100 Hz. Pliteq states that GenieClip assemblies are laboratory tested and its specification requires assembly testing in NVLAP-certified laboratories; the brochure cited for TL07-670 does not name the laboratory. We therefore identify it as published test-report data and avoid assigning a specific laboratory that the source does not state. No 50 or 63 Hz values are published for this assembly in the cited brochure.
Kinetics: IsoMax assembly and report references ↗
Kinetics: supplementary low-frequency source ↗
Knauf: W623 185 mm laboratory result / SWC 21 093-05 ↗
iKoustic: performance sheet, page 11 ↗
iKoustic: 74 mm lining-depth specification ↗
Pliteq: construction and results, printed pages 14 and 20 ↗
The homepage is deliberately limited to 50-80 Hz; the linked source material is not truncated. The substantially thicker 254 mm IsoMax AT001090 wall and other non-matched wall configurations are outside this initial comparison. Adding two further 12.5 mm boards on the stiff side would make a nominal 207 mm wall (182 + 25 mm), with two layers on the isolated side and four on the stiff side. This proposed assembly is not represented by the current acoustic curve; a future test must have its own results, date, layer schedule and measured thickness.