Artikl: Sound B27

Produktový list 1.3.27

Stínící technika a dekorace oken.

Adrems s.r.o. Bubenečská 258/9, Praha 6., info@adrems.cz www.adrems.cz Pro návštevu ateliéru se prosím předem objednejte na +420 603 390 652.

Use: Transparent curtain fabric

Number of colours: 9Special colours available from 300 m / 330 ydsupwards.

Material: 100% Flameretardant polyester (Trevira CS)

Fabric width: 300 cm/118 inch/3.28 yard

Can be railroaded: Can be railroaded

Weight: 205 g/m²

Flame-retardant properties:

Additional use:

Care:

Washing (length shrinkage): 0.5%

Dry cleaning (length shrinkage): 1%

Sound absorption: Alpha value 0.70

Light fastness: 5-6

Certificates / tests: Fire Test JapanSound absorption ISO 354 / ISO 11654

Special notes: - Megacoustic has exceptionally high soundabsorbing values in the range of humanspeech (between 250 Hz and 2000 Hz) andachieves a verified sound absorption Alphavalue 0.70.

Price: 3 900,- Kč/m‘ bez dph4 719,- Kč/m‘ vč. dph

Produktový list 1.3.27Stínící technika a dekorace oken.

Adrems s.r.o. Bubenečská 258/9, Praha 6., info@adrems.cz www.adrems.cz Pro návštevu ateliéru se prosím předem objednejte na +420 603 390 652.

Sound absorption coefficient ISO 354Measurement of sound absorption in reverberation rooms

MEGACOUSTIC, folded arrangement, 100 % fabric addition(150 mm distance to the wall)

Mounting:Testing area width x height = 3.48 m x 3.05 m150 mm distance between fabric and wall of reverberation roomFabric hanging in folded arrangement with 100 % fabric additionConstruction without enclosing frame

Material details:Fabric made of 100 % PLF Trevira CSThickness d = 0.9 mmArea specific mass m'' = 205 g/m²Air flow resistance according to EN 29053 Rs = 621 Pa s/m

Frequency f / Hz125 250 500 1000 2000 4000

Soun

d ab

sorp

tion

coef

ficie

nt α

S

0.0

0.2

0.4

0.6

0.8

1.0

1.2

Shifted curve of reference values according to ISO 11654Sound absorption coefficient

Frequency

[Hz]

αS1/3 octave

αpoctave

100 0.03125 0.02 0.05160 0.14200 0.23250 0.36 0.40315 0.62400 0.78500 0.89 0.85630 0.92800 0.91

1000 0.87 0.901250 0.911600 0.942000 0.92 0.952500 0.933150 0.964000 0.96 0.955000 0.97

Equivalent sound absorption area less than 1.0 m²αS Sound absorption coefficient according to ISO 354αp Practical sound absorption coefficient according to ISO 11654

θ [°C] r. h. [%] B [kPa]

without specimen 24.7 59.6 95.7

with specimen 24.7 59.3 95.7

Rating according to ISO 11654:Weighted sound absorption coefficient

αw = 0.70 (H)Sound absorption class: C

Rating according to ASTM C423:Noise Reduction Coefficient NRC = 0.75

Sound Absorption Average SAA = 0.77