Absorption With A View: Acousticians have long sought a fully transparent, absorptive finish to control reverberation in a room, while maintaining the view through glazing. RPG® is now offering a new patented microperforated, clear panel that provides significant mid-low frequency absorption. The Clearsorber™ offers a long awaited solution to providing absorption with a view and is finding immediate application in architectural acoustics.

The Clearsorber is a 0.20" (5 mm) thick panel with 0.02" (0.5 mm) holes spaced 0.2" (5 mm) apart. It provides absorption through high viscous losses as air passes through the small holes, which are comparable in size to an air boundary layer. This inherent damping eliminates the need for fiberglass or other porous materials in the air cavity between the Clearsorber and the reflective surface behind it. Thus it is now possible to provide particle free, absorption with a view. All that is necessary is an air cavity between the Clearsorber and the rear reflecting surface. To augment the mid-low frequency absorption, the Clearsorber can be curved, tilted or shaped to provide redirection or diffusion in the mid-high frequency region.

Problem
Acousticians have long sought a transparent, absorptive "glass-like" surface to control excessive reverberation in rooms with glazing or flat reflective surfaces.

Solution
RPG® is now offering a new patented microperforated, transparent, inherently damped panel absorber called the Clearsorber™, which provides excellent absorption, while maintaining visibility through the panel.

Absorption
Clearsorber™ provides absorption, because the microperforated panel, when spaced from a transparent or non-transparent reflective surface, offers high viscous losses when air passes through the surface. The Clearsorber™ is inherently damped and does not require porous absorption in the cavity between the Clearsorber™ and the reflecting wall behind it.

Installation
The Clearsorber™ is simply hung or fastened in front of a reflective surface. It can also be hung in free space, provided that a Clearsorber™ panel is spaced on either side of a non-perforated transparent panel. In this mounting, both sides of the panel are absorptive. Many shapes and configurations are possible.

• Inherent damping
• No porous absorption required
• Fiber free installation
• Non-combustible surface treatment
• Absorption with a view
• Many applications
• Can be shaped
• Can be etched

BENEFITS

• Inherent damping provided by an array of microperforations, offers high absorption in the mid-lows.
• The Clearsorber™ does not require any porous absorption in the cavity between the microperforated panel and the rear reflective wall.
• The absence of porous absorption means a fiber-free installation.
• The non-combustible feature of this system means it can be used in any environment.
• The transparent and fiber-free nature of the Clearsorber™ means it can be used in front of glazing, thus offering absorption without compromising the view.
• The transparent feature of the Clearsorber™ offer potential use in a wide range of facilities either to provide absorption while maintaining a view, provide an absorptive transparent cover for artwork, stained glass or other interesting surface application, provide freely suspended absorption while allowing daylighting, and many more applications.
• The Clearsorber™ may be applied flat and parallel to a reflective surface or shaped to provide mid-high diffusion, thus offering diffsorption with a view. It can also be shaped for a free-standing artistic acoustic sculpture.
• Etching offers the opportunity for personalization and surface artwork.
  

SPECIFICATIONS

• CSI Specifications
• Absorption Coefficients