RAUVOLET acoustic-line comprises a special profile geometry with continuous punched holes and an

acoustic fleece made of non- woven material. The acoustic fleece inside acts as an absorber, taking

the sound wave energy on entry and inhibiting its exit. The sound is therefore absorbed effectively.

RAUVOLET acoustic-line absorbs up to 70 % of the incident sound when used in cabinets.

The distinguishing feature of the product is the linear absorption performance over the entire frequency

range. The patented broadband absorber is therefore highly effective at absorbing deeper and higher

sounds and above all in ranges relevant for speech.

Profile size

Basic tambour door profile material

Non-woven material

Material

Fire behaviour

Acoustic values

Punched holes

Proportion of punched area

Hole centre spacing

NRC value

SAA value

27 x 12 mm

RAU-PP 1482

Glass, pulp

B1, flame retardant

Front

Diameter 2 mm

10 %

7 mm

0.70*

0.74*

Back

Diameter 3.5 mm

12 %

8.7 mm

The rated sound absorption coefficient

is α

w

= 0.70.

*The measured values refer to

reverberation chamber measurements

and to empty, unfilled cabinets.

On request, we will be happy to provide

you with the detailed test reports.

1.2

1

0.8

0.6

0.4

0.2

0

Sound absorption rate α

s

to ISO 354 (reverberation chamber)

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

Frequency (Hz)

Cabinet closed

Cabinet open

0.4

0.35

0.3

0.25

0.2

0.15

0.1

0.05

0

Individual object sound absorption surface α

obj

per element

to DIN ISO 20189

100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000

Frequency (Hz)

Cabinet closed

Cabinet open

69

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