portodudeEckel Portable Anechoic Chambers (PACs) provide the essential environment for conducting a wide variety of acoustical studies.

PACs assist in :

Improving product performance

Establishing Quality control of components and systems

Designing products with reduced noise output

Applications of these chambers include:

  • Acoustical testing and analysis of small electronic, electrical, and mechanical devices 
  • Calibration of microphones
  • Free field response testing of loudspeakers
  • Determination of hearing aid characteristics
  • Animal behavioral studies

 

Our high performance chambers are available in a broad range of sizes, with low frequency cuttoffs from 150 Hz. We offer a complete line of standardized models with various optional equipment available.

 

Features

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Outstanding Acoustic Performance

The sound attenuating enclosure is lined with pre-tested anechoic wedges, as is the access door. In addition, the floor system is non-reflective. This makes for an easily maintainable sound absorption level of between 99% and 100% inside the chamber.

Easy Installation

Standard Models are prefabricated in sections that are lined and fitted with accessories. These sections pass through a regular door, and require only bolting for final assembly and use. Units can be quickly and safely moved to any area where they are needed.

Economical

The chambers are engineered for long term operation. Acoustic and structural integrity is kept over the years.

Flexibility

Provision for external electrical connections is standard.

Construction

  • The cabinet is fabricated of 3/4" waterproof plywood reinforced with 2" x 4" external framing and 14 GA. corner steel angles for the models through 666-250-3. The larger models in the 888 series are constructed with an outside cabinet of Eckel's patented acoustic modular panels. Corners at section joints are further reinforced with steel gussets. To prevent acoustic leaks, section joints are splined.
  • Portanechoic Anechoic wedges are mounted on the interior surface of the cabinet. Wedges in low frequency cutoffs of 150, 200, and 250 Hz are available. They are constructed of fibrous glass with metal bases and have individual point protection. The wedge covering depends upon the model selected.
  • Standard doors are 25" wide by the heights of the free field, and feature heavy-duty hardware, neoprene gaskets, and hinges for 180 degrees of swing. Wedges are mounted directly on the door and swing completely clear of the opening when the door is swung through a 180 degree arc.
  • Two 1" IPS sleeves are furnished, as well as a light fixture.
  • Exterior surfaces are primed and painted with off-white enamel on wood cabinet models; metal panel cabinets.
  • The sound attenuating enclosure is lined with pre-tested anechoic wedges, as is the access door. In addition the floor system is non-reflective. This makes for an easily maintainable sound absorption level of between 99% and 100% inside the chamber.