• Silent Screen Panel
• M-90 Absorptive Panel
• VISTA Panel
• Reflective Panel

Silent Screen absorption panels are designed to provide both sound absorption and sound transmission loss. These panels consist of individual sections, each 12 inches wide, mounted horizontally on top of one another, or vertically, side by side. Each section consists of a 2 3/4 inch deep, 16 to 22-gauge tray. Typically, the tray is filled with six-pound density mineral wool, and covered with a perforated 22-gauge face panel.

Some of the incident sound striking the perforated side will pass through the perforations and be absorbed by the acoustical material, and some will be reflected back in the direction of the noise source. The "remaining" sound, which is transmitted through the barrier, will be substantially reduced. The panels have a Noise Reduction Coefficient (NRC) of 1.05. The panels also have a sound transmission class (STC) of 26 for 22 gauge steel and STC of 35 for 16 guage steel.   STC's as high as 46 are available.

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The M-90 panel is designed for wall-mounting indoor and outdoor applications. The panel widths are 24 inches wide. The panel thickness is 2 5/8 inches and lengths vary up to 12 feet. The absorptive material is a six-pound density mineral rock wool. The M-90 panel has a sound absorption value of NRC 1.1.

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When some degree of visibility is required for safety or monitoring purposes, EAS Acoustical Panels can incorporate a high strength Lexan-type material which has a clarity rivaling glass, but is much stronger. VISTA panels also are abrasion and ultraviolet resistant.

VISTA panels are easily combined with mineral wool filled panels or double wall panels to solve a wide variety of sight and sound problems.

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Silent Screen Reflective Panels are designed to provide sound transmission loss only. The panels consist of interlocking sections, typically 12 inches wide, and can be mounted horizontally or vertically. Reflective panels provide a lightweight, aesthetically pleasing noise wall and acoustical barrier.

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There are two properties which are used to measure the performance of acoustical panels. Sound absorption is the ability of a noise panel to internally dissipate (as heat) incident acoustical energy. This properly is measured in terms of a sound absorption coefficient.. The higher the value of the coefficient, the more sound will be "absorbed," leaving less to be transmitted or reflected. Theoretically, a coefficient value of 1.0 indicates that all incident energy is absorbed.

Sound transmission loss is a measure of the amount by which a noise level is reduced as the noise "passes through" a panel or barrier. Transmission loss is measured in decibels, and a high transmission loss indicates that a panel will be able to block substantial amounts of noise.

EAS panels have been tested in an independent acoustical laboratory.* The results of these tests are available on request. Typical performance data for standard panels is as follows: (Right)

Sound transmission loss tests were performed in accordance with ASTM-E90 and ASTM-E413. Sound absorption tests were performed in accordance with ASTM-C423 and ASTM-E795.

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*Riverbank Acoustical Laboratories

One of the major advantages of the EAS Silent Screen panels is their ease of handling and assembly. In contrast to many other acoustical panels, which are fabricated in heavy 2-foot or 4-foot widths, Silent Screen panels are standard 12 inch widths. These lightweight sections can be easily handled and installed by one or two people without special tools.

Many installations do not require fasteners between panel sections!

All necessary trim pieces and hardware are included. When required, structural supports, framing and girts can also be designed and supplied, resulting in a complete turnkey installation.

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A complete set of suggested product specifications for EAS Silent Screen panels is available

EAS panels are designed to be virtually maintenance-free over the expected lifetime of a typical installation. Spray painted graffiti can be easily removed with common solvents when using the Kynar? paint system.

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Panels can be supplied either galvanized (G-90) or color coated after galvanizing with one of the following systems:

• Empire Acoustical Systems has recently acquired a 'baked on' Powder Coating system for projects requiring 'custom' colored panels. Most colors are available with this system; color charts sent upon request, or for custom colors please provide Empire with a federal spec number or a sample of the color itself.
• Panels can also be coated using the Kynar 500 Series, Empire stock color Sandstone.
• All acoustical panels are supplied galvanized, and may be painted in the field.

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Our superior coating system is available in a variety of colors to suit virtually any decor requirement. Colors can be specified to blend into or contrast with the surroundings. Panels are supplied with all ancillary items in matching colors.

Absorptive panels can be specified with a flat finish, to reduce unwanted glare and reflections, or a gloss finish, to enhance the color and brighten the decor. Alternatively, if a coating is not required, panels can be furnished with a standard galvanized finish.

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EAS Acoustical Systems has structural designers and engineers available, and can provide a turnkey project, including installation, when requested.

We also have the resources to provide acoustical testing and evaluation. A preliminary acoustical analysis may be necessary to determine the appropriate type of treatment. Pre- and post-project acoustical measurements can help determine the effectiveness of an installation.

Our technical staff is ready and willing to assist you on your next project.

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