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Anechoic Chamber Wedges

Eckel Anechoic Chamber linings represent the most advanced technical thinking in design and construction.

Currently we offer fiberglass, foam, and perforated metallic EMW types of sound absorbing wedges, as well as new E-Element concept and SuperSoft panels to accomodate the widest range of testing requirements.

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EW Standard Wedge

The EW Standard Wedge is the classic design based on the original geometry established by Beranek and Sleeper at Harvard during World War II. Current E.W. Wedges incorporate the latest materials and design modifications for a wedge treatment with maximum broadband performance.

EMW Perforated Metalic


The Eckoustic Metallic Wedge represents the execution of the classic design with a perforated metal cover versus the original wire hardware cloth. Utilizing high transparancy 22 ga. perforated steel or aluminum, the metal cover is virtually acoustically transparent.

E-Element Anechoic Absorbing Unit


Utilizing a unique geometry, the E-Element offers a new dimension in anechoic chamber construction differing from the conventional wedge design. The E-Element is constructed of multiple parallel surfaces with tapered leading edges that alternate 90 degrees out of phase with one another. This creates a sound absorbing array which achieves cut-off with less depth of treatment than conventional “wedge” designs.
[ US Patent #5.780.785 ]

Acoustic Foam Wedge Unit


Acoustic Foams, (polyurethane and melamine) offer acceptable acoustical characteristics in many applications and may be more economical than traditional treatments. Polyeurathane foam chambers must incorporate a sprinkler system because they are hazardous if combusted. Properly designed foam chambers work well in many applications.

Supersoft Panel Lining

ssnSuperSoft panel linings for acoustic test facilities were developed to fill a niche in situations where a full anechoic chamber is not required. An existing or new structure can be lined with an extremely high performance acoustic panel to yield a test environment satisfactory for general product testing and noise emission.