▸ 20 oz. CRESCENT A mediumweight, sound absorbent durable IFR velour with a short dense nap and a matte finish. Drapes and lights beautifully. Ideal for stage drapery or anywhere a classic look is desired. See page 77 for colors. Full bolts only.

Inherently Flame Retardant Width: 54 Bolt Length: 60-80 yds 100% Polyester

Price Per Yard: $17.95

Noise Reduction Coefficient NRC: 0.95 Sound Absorption Average SAA: 0.96

Noise Reduction Coefficient NRC: 0.85 Sound Absorption Average SAA: 0.83

Noise Reduction Coefficient NRC: 0.90 Sound Absorption Average SAA: 0.92

▸ 25 oz. CHARISMA Heavyweight and durable, with a matte finish and a thick dense pile, CHARISMA is an elegant, high-quality synthetic IFR velour that has the rich look and deep color of cotton velour as well as its capacity for light- and sound-absorbency. Excellent for theatrical venues, rehears- al spaces, recording studios. See page 77 for colors. Full bolts only.

Inherently Flame Retardant Width: 54 Bolt Length: 60-80 yds 100% Polyester

Price Per Yard: $22.85

▸ 25 oz. PRESTIGE PRESTIGE is a heavyweight, durable IFR velour that has a slight sheen and a long dense pile, giving it a luxurious satiny look along with exceptional opacity and sound absorption. Hangs and lights beautifully. A very good across-the-board performer for many appli- cations. See page 77 for colors. Full bolts only.

Inherently Flame Retardant Width: 54 Bolt Length: 60-80 yds 100% Polyester

Price Per Yard: $22.00

In a large variety of multi-purpose venues that require variable acoustic control, most solutions

are accomplished with flexible absorption methods. Sound waves can be effectively absorbed by

almost any open cell structure such as fabrics, foams, or carpet; whereas fabrics being the most

versatile form of flexible absorption. Factors that contribute to good sound absorption in fabrics are

flow resistance and weight of the material. The Noise Reduction Coefficient (NRC) gives a general

impression of the absorption properties of the material. For example, a NRC of 1 absorbs 100% of

sound energy. Other important factors that determine the NRC are percentage of fabric fullness

and the distance away from the wall in which the fabric has been tested.

SOUND ABSORPTION WITH FABRICS

0,00 125 250 500 1000 2000 4000

f/Hz

αs1,00

0,80

0,60

0,40

0,20

0,00 125 250 500 1000 2000 4000

f/Hz

αs1,00

0,80

0,60

0,40

0,20

0,00 125 250 500 1000 2000 4000

f/Hz

αs1,00

0,80

0,60

0,40

0,20

NRC & SAA data is measured with 100% fullness and hanging 4" off the wall. For additional reports and data, log onto gerriets.us.

170 gerriets.us | 800-369-3695 | info@gerriets.us

Acoustical Solutions ▸ ACOUSTIC FABRICS

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