MetalHighly absorbent

Physikalisch-Technische Bundesanstalt

Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 164

Value from the PTB table, not verified

Hunter Douglas Luxalon 84 C aluminum panel with fiber absorber

Luxalon 84 C

PTB reference data

Original description

Material properties

Manufacturer: Hunter Douglas

Thickness: 0 in

Wall distance: 7.9 in

Perforation: 15 %

Hole size: 0.1 in

Surface: stove-enameled

Reverberation chamber (ASTM C423 / ISO 354)· 2 variants

NRC

1.05

α_p per octave band

f (Hz)	125	250	500	1k	2k	4k
α_p	0.35	0.85	1.00	1.00	1.00	0.85

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Compare		Value
	Mineralwolldichte 55 kg / m³	NRC1.05
	Mineralwolldichte 70 kg / m³	NRC1.00

NRC: 1.05 (derived from ISO 354 lab data)

Dimensions: Modulbreite 3.9 in, Länge bis 6 m

Application: Deckenpaneele

Distance: 7.9 in

Measured values as a table (2 measurements)

Hunter Douglas Luxalon 84 C aluminum panel with fiber absorber: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-up	NRC	100 Hz	125 Hz	160 Hz	200 Hz	250 Hz	315 Hz	400 Hz	500 Hz	630 Hz	800 Hz	1000 Hz	1250 Hz	1600 Hz	2000 Hz	2500 Hz	3150 Hz	4000 Hz	5000 Hz	6300 Hz
Mineralwolldichte 55 kg / m³ · 200 mm · Deckenpaneele · gelocht	1.05	0.24	0.38	0.40	0.78	0.90	0.92	1.00	1.08	1.06	1.04	1.02	1.03	1.10	1.10	1.05	0.95	0.79	0.81	0.64
Mineralwolldichte 70 kg / m³ · 200 mm · Deckenpaneele · gelocht	1.00	0.23	0.33	0.55	0.78	0.85	0.86	0.93	1.03	1.01	1.04	1.04	1.07	1.12	1.08	0.93	0.83	0.73	0.75	0.63

Measured values as a table (2 measurements)

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Last updated: 08/28/2026