Resilient Channel (RC-1) Acoustic Properties \u2014 Absorption Coefficients (125Hz\u20134kHz)
Thin-gauge steel channel that decouples plasterboard from studs/joists, breaking the vibration path. Primarily improves STC/Rw (sound insulation) rather than absorption. Adds some low-frequency panel absorption due to the resilient mounting.
Absorption Coefficients by Octave Band
| Frequency (Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 |
|---|---|---|---|---|---|---|
| α (absorption) | 0.20 | 0.12 | 0.08 | 0.05 | 0.04 | 0.04 |
RT60 Impact
Resilient channels primarily improve sound insulation (STC/Rw), not RT60 absorption. Minimal direct effect on reverberation
Manufacturers & Brands
Frequently Asked Questions
What is the NRC of Resilient Channel (RC-1)?
Resilient Channel (RC-1) has an NRC (Noise Reduction Coefficient) of 0.10, calculated as the arithmetic mean of absorption coefficients at 250, 500, 1000, and 2000 Hz per ASTM C423.
Where is Resilient Channel (RC-1) typically used?
Resilient Channel (RC-1) is typically used as a wall (behind plasterboard) and ceiling (behind plasterboard) treatment. Thin-gauge steel channel that decouples plasterboard from studs/joists, breaking the vibration path.
How much does Resilient Channel (RC-1) reduce RT60?
Resilient channels primarily improve sound insulation (STC/Rw), not RT60 absorption. Minimal direct effect on reverberation
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