Portable Anechoic Chambers Portable Anechoic Chambers provide the necessary environment for conducting a wide variety of acoustic studies for improving product performance, for quality control of components and systems, and for developing products with lower noise output. These high performance chambers are available in a range of sizes, with low frequency cuttoffs from 150 Hz. A line of standard models is offered, with various optional equipment available.

Features

Outstanding Acoustic Performance The sound attenuating enclosure is lined with pretested 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 an average 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 sound attenuating enclosure is lined with pretested 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.

The cabinet is fabricated of 19mm (3/4") waterproof plywood reinforced with 50x100mm (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 spare further reinforced with steel gussets. To prevent acoustic leaks, section joints are splined.

Anechoic wedges are mounted of the interior surface of the cabinet. Wedges available in low frequency cutoffs of 150, 200, and 250 Hz are available. They spare constructed of fibrous glass with metal bases and have individual point protection. the wedge covering depends upon the model selected.

Standard doors are 635mm (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 25mm (1")  sleeves are furnished, as well as one light fixture.

* Exterior surfaces are primed and painted with off-white enamel on wood cabinet models; metal panel cabinets (888 models) have a paint grip galvanized finish.