Acoustic Panels Absorber

We don’t just get our panels to look good aesthetically (that’s only a small part!)  But we have made sure to engineer and test our panels against most commercially available Indian acoustic control solutions.

Our 3 – 4 inch broadband absorbers measure better than the bass traps of most existing and our 9 inch reference total traps will pretty much surprise all acoustic experts.

And hence these are not only used for excellent broadband absorption but with slight modifications can even do an excellent job in trapping lower range frequencies.

Our panels hold 3 separate proprietary absorption materials for most of the sound spectrum (We DO NOT use “acoustic foam” as a shortcut that is used by most manufacturers only for the sake of being competitive, since these have only a limited absorption field in addition to being non durable over time.

Broadband panels are constructed of high density (120 kg/m³ ) glass wool with resin hardened edges and a rigid frame for easy hanging from a wall or ceiling, and includes an air gap for added absorption. This process works in tandem with the micromesh to fully encapsulate the glass wool to eliminate fibers from escaping. Panels are then covered in an acoustically transparent fabric in a choice of three colors or custom digital print for an architecturally attractive appearance..

In the world of acoustics, bass or low frequencies are difficult to control due to their long wavelengths. With sufficient power, bass will pass through just about anything. This means that it not only requires more energy to generate bass (think elephant versus mouse), it is a lot tougher to stop it once it gets going (think trying to stop a freight train versus stopping a bicycle). High frequencies are much less of a problem as the shorter wavelength is much less powerful.

The easiest way to absorb low frequencies is to increase the thickness of the panel. One can more or less predict the required thickness of an acoustic panel by employing ‘quarter wavelength’ calculations. But actual acoustic testing generally delivers surprising results. Unless the panel is sufficiently dense, bass will pass right through. This is the problem with low density foam; it is ineffective at absorbing bass. On the other hand, if the panel is too dense; the high frequencies will simply bounce off and reflect back into the room. SoundFoundations Broadband panels are designed to do both; they provide balanced absorption.

The  2.5 panel is made from high density 120 kg/m³  glass wool while most foam panels are made using low density 1.3lb urethane. Because most of the foam is cut away to create an artistic pattern, the density of the foam is further reduced due to the huge air gaps that have been cut away. Most foam ends up with a density that barely reaches 1lb per cubic foot. With only 1/6th the density of a SoundFoundations 2.5 panel, it is no wonder that urethane foam is unable to absorb bass. This underscores the importance of checking the data and making sure it comes from a reputable independent laboratory. If the manufacturer does not provide independent tests, you are likely getting less than what you are paying for.

Mount at the primary and secondary reflection points on the walls
Install on a ceiling with optional Ceiling Mounting as a cloud ceiling in order to tame prime or secondary reflections
Open back not only allows absorption of lower frequencies with an air gap, but also to allow the panel to sit flush against the wall.

Core material : Rigid mineral and glass wool with a porous synthetic back to provides twice the low end absorption over similar foam-based products

Density/Weight  : 140kg/ m3 + 300 kg/ m3 fibre wood wool+ mass loaded vinyl ( 16kg/m3) suspended diaphragm

Square / Narrow : 2kg – Rectangular 2*4 – 4 kg

NRC : 1.05 (versus foam products where NRC = 0.4 at Mid range Frequencies )

It is well documented that the most difficult frequencies to control are in the deep low bass region. This is due to the long wavelengths that require a lot of energy to produce, and then tremendous effort to control. Once a room is overly excited with bass energy, room modes develop whereby sound bouncing off the walls will react with the direct sound from the loudspeaker and either cancel each other out – if out of phase – creating a lull or combine together – if in phase – to create a peak. These cause frequency bumps (modes) in the room that cause the sound to change depending on where you are positioned.

The solution is to integrate a bass trap into the room. Because low frequencies below 300Hz are considered to be omnidirectional, a bass trap can be positioned anywhere in the room to have effect. However, because sound travels within the confines of the walls, ceiling and floor, it tends to migrate into corners. This makes the corner the most efficient location for capturing sound energy.

Designed to be flat wall mounted or corner mounted for bass trapping at ear-height, or celing hung, the kit provides substantial surface area for broadband absorption with effective coverage down into the low bass region.

Core material : Formed Semi rigid inorganic glass fibres with a wood wool porous fibre network with a built in air gap. The front has Micro fiber mesh below the Acoustic fabric and a stiff back for holding up the heavier panel. Between the wood wool network and within the air gap is a mass loaded vinyl ( 16kg/m3) suspended diaphragm.

Density/Weight  : 140kg/ m3 + 300 kg/ m3 fibre wood wool+ mass loaded vinyl ( 16kg/m3) suspended diaphragm.

NRC : 1.0 @  Hz onwards  – For reference and mastering level absorption