Description and Application
Kinetics Model S-4 is a highly efficient, tuned sound absorber designed for low and midfrequency sound absorption.
Model S-4 consists of a 3 PCF (48 kg per cu. M) glass fiber core completely protected with a ten mil (254 micron) thick neoprene-coated, fiberglass reinforced, aluminized polyester white or foil film facing.
The product is available in 1" (25 mm) and 2" (50 mm) thicknesses, and sizes up to 4' by 8' (1219 mm x 2438 mm), or in die-cut shapes to meet application requirements. When tested in #4 mounting (direct application), the 1" (25 mm) thick S-4 sound absorber is rated at NRC 0.75. The 2" (50 mm) thick S-4 is rated at NRC 0.94.
Kinetics Model S-4 Sound Absorbers are particularly suited for wall or ceiling installations in industrial facilities and machinery enclosures, engine shrouds, air compressor cabinets or other applications where a reduction of reverberated sound is desirable.
The board-like absorbers have good structural integrity and damage resistance and can be used in temperatures from -40°F to +450°F (-40°C to 232°C).
The highly reflective surface and flame resistant properties of the facing material (the Fire Hazard Classification is: flame spread 15, fuel contributed 0, smoke developed 10) make it ideal for most applications where sound absorption is required.
Kinetics Model S-4 Sound Absorbers can be installed by impaling them on welded pins, by cementing, or by using edge clips or batten strips. S-4 Absorbers can be steam cleaned and are designed to resist most conditions which are found inside machinery enclosures.
Sound Absorption Coefficients
#4 Mounting (Direct Application)
| Frequency, Hz | 1" (25 mm) Thick | 2" (50 mm) Thick |
|---|---|---|
| 125 | 0.13 | 0.26 |
| 160 | 0.15 | 0.35 |
| 200 | 0.21 | 0.62 |
| 250 | 0.32 | 0.80 |
| 315 | 0.50 | 1.01 |
| 400 | 0.73 | 1.18 |
| 500 | 0.95 | 1.23 |
| 630 | 1.06 | 1.17 |
| 800 | 1.10 | 1.08 |
| 1000 | 1.08 | 1.00 |
| 1250 | 0.93 | 0.93 |
| 1600 | 0.76 | 0.81 |
| 2000 | 0.62 | 0.71 |
| 2500 | 0.55 | 0.64 |
| 3150 | 0.53 | 0.53 |
| 4000 | 0.46 | 0.43 |
| NRC | 0.75 | 0.95 |
| Absorber Type | Total Absorption Sabins | Dimensions | |||||
|---|---|---|---|---|---|---|---|
| A | B | C | |||||
| in | (mm) | in | (mm) | in | (mm) | ||
| S4-2/2-1 | 3.50 | 24 | 610 | 24 | 610 | 1 | 25 |
| S4-2/4-1 | 6.75 | 24 | 610 | 48 | 1219 | 1 | 25 |
| S4-4/4-1 | 13.00 | 48 | 1219 | 48 | 1219 | 1 | 25 |
| S4-4/8-1 | 25.50 | 48 | 1219 | 96 | 2438 | 1 | 25 |
| S4-2/2-2 | 5.01 | 24 | 610 | 24 | 610 | 2 | 50 |
| S4-2/4-2 | 9.40 | 24 | 610 | 48 | 1219 | 2 | 50 |
| S4-4/4-2 | 17.54 | 48 | 1219 | 48 | 1219 | 2 | 50 |
| S4-4/8-2 | 33.84 | 48 | 1219 | 96 | 2438 | 2 | 50 |
Specifications
Sound absorbers shall be constructed from 3.0 PCF (48 kg per cu. M) fiberglass, sized as required, up to 48" x 96" (1219 mm x 2438 mm) with a thickness of 1" (25 mm) or 2" (50 mm). The fiberglass core shall be completely wrapped and sealed with a ten (10) mil (254 micron) thick neoprene coated, fiberglass reinforced, aluminized polyester white or foil film facing.
Absorbers shall have a minimum NRC rating of 0.75 for 1" (25 mm) thickness and 0.94 for 2" (50 mm) thickness.
Fiberglass facing shall exhibit a flame spread rating of 15, fuel contribution of 0, and smoke development of 10 when tested in accordance with UL 723.
Absorbers shall be capable of being steam cleaned. Fiberglass facing shall be oil resistant.
Absorbers shall be installed by impaling on welded pins, by cementing, or by the use of edge clips or batten strips.
Absorbers shall be Model S-4 as manufactured by Kinetics Noise Control, Inc.
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