The Latest News on Acoustic Speaker Cloth – and Us

Tag: Akustikstoff 2.0

Acoustic Cloth 2.0 Goes High-tech: Protection of Phased Arrays for Air-coupled Ultrasonic Applications

The number of complex ultrasonic applications is increasing. The range extends from distance measurement and the identification of obstacles to non-destructive material testing with phased arrays for air-coupled ultrasound. So-called 3D-printed waveguides are currently being developed for such technically complex applications. So far, adequate protection of the equipment against water and dust has been a problem, however, as many practical applications require the equipment to function even under extremely demanding environmental conditions

The Technical University of Darmstadt in Germany has now addressed this problem in a research project and carried out tests with our liquid and dirt-repellent Acoustic Cloth 2.0, among other things. The results presented by Professor Mario Kupnik’s research team in September 2020 during the 2020 IEEE International Ultrasonics Symposium (IUS) in Las Vegas* demonstrate the high suitability of acoustic material 2.0 for protecting waveguides. “We (…) demonstrate that the protection via hydrophobic fabric works excellent, i.e. without any significant drawbacks. Beam steering stays fully functional and the reduction of sound pressure level is only in the order of 1.5 dB. However, now the array can be used in real world applications,” the researchers conclude.  

phased arrays for air-coupled ultrasonic applications using Akustikstoff.com's 2.0 fabric as a protection layer
Acoustic Cloth 2.0 as a protection layer for air-coupled waveguide ultrasonic phased arrays

Further details on the TU Darmstadt website

* M. Rutsch, G. Allevato, J. Hinrichs and M. Kupnik, “Protection layer for air-coupled waveguide ultrasonic phased arrays,” 2020 IEEE International Ultrasonics Symposium (IUS), Las Vegas, NV, USA, 2020, pp. 1-4, doi: 10.1109/IUS46767.2020.9251728.

Acoustic Cloth 2.0 for Italian High-end Sound Studio

»The Spheres« is a recording studio and events space in Pescara-Montesilvano (Italy) on the Adriatic coast, offering state of the art audio and video equipment as well as an active concert calendar. Without doubt, the studio, which also offers mixing and mastering services along with outstanding recording opportunities, can be considered one of the finest recording studios in northern Italy and even beyond – especially for classical, jazz, and world music. It is available to all labels, engineers, projects, and artists who want to benefit from the extraordinarily high levels of acoustic and technical standards that characterize the studio throughout.

Main room of

The studio was designed principally for acoustic music, but is versatile and welcomes all genres. It was rapidly constructed inside an adapted warehouse between November 2016 and May 2017. Planning and acoustic design was by producer, sound engineer, and studio owner John Anderson. The classical pianist, who runs the record label Odradek Records, holds two performance degrees from the Accademia Musicale Pescarese and a degree in musicology from the University of Oxford. 

Having had a look at samples of our Acoustic Cloth 2.0, John decided to use this stain-resistant, liquid-repellent, and B2 fire-rated fabric for the numerous wall and absorber covering purposes in the recording rooms and the control room of his studio. Altogether, 160 square metres of Acoustic Cloth 2.0 and 250 metres of our adhesive hook fastener tape were used in the construction of »The Spheres«.

Main room of

The main room offers 135 square metres of space and a diffuse sound field that is achieved with eight 2D QRD »Skywalker Sound« replica movable diffusors/gobos, and a further 144 2D QRD »BBC style« diffusors mounted on the walls. Every corner has a wedge bass trap from floor to ceiling, a column of 115kg per cubic meter dense rock wool covered with Acoustic Cloth 2.0, which help control the room’s bass build-up and modal distribution. The dropped ceiling is sound absorbent. The floating walls are insulated and isolated via rubber decouplers from the structural walls behind. The result is a silent, world class lively ambience with no boomy bass build-up confusion and silky-smooth highs with no harsh flutter echoes.

Control room of

The control room features 48 square meters with four-metre ceilings and has a separated machine room. It is a Tom Hidley »non-environment room«-inspired design with vertical and horizontal wave guides angled to capture incoming sound from their opposite side monitor. Sound is trapped by eight cm of dense rockwool behind. Unabsorbed energy is directed away from engineer’s listening position to create a reflection free space, ensuring accurate monitoring. The waveguides are completely covered by Acoustic Cloth 2.0 for an elegant finish.

Vocal booth of

If you want to get a more detailed impression of the construction process as well as the finished studio, have a look at their amazing construction book and visit the studio’s website.

Drum booth of

Speaker Cloth in Another 12 Crisp and Luscious Colours!

The new 2017 colours from Akustikstoff.comWe have extended the range of available colours for our speaker fabrics again! The new colour variants include timeless classics that go especially well with natural materials as well as the latest trend colours—among them the Colour of the Year 2017, which is now available in our online shop as “Green Tea” (colour code 40 / 140). This means that this year’s most snazzy colour is now readily available as a high-grade acoustic fabric for loudspeakers, soundboards, door pods, absorbers and diffusors and much more. It is also the perfect match whenever shop fittings or trade fair booths require an acoustically transparent fabric.

All new colours are available for our standard acoustic cloth as well as for our water-repellent, flame-retardant and stain-resistant Acoustic Cloth 2.0.

42: The answer to life, the universe, and colours 
Our Acoustic Cloth and Acoustic Cloth 2.0 are now available in 42 various colours – immediately from stock, as handy pre-cuts as well as by the metre from the roll. You can be sure to find speaker fabric in the ideal colour for every purpose and taste .

Why not visit our shop right away and be inspired by the stunning variety of colours?