Akustikstoff.com Blog

The Latest News on Acoustic Speaker Cloth – and Us

Spray Adhesive as a Problem Solver

Many hifi enthusiasts have developed a great passion for the DIY refurbishment of vintage speaker cabinets. An update of the speaker grille with new Acoustic Cloth is one of the key elements in most of these projects, but it’s not always the easiest task. 

The JBL* LX55, for instance, a popular speaker among experts that is sold at increasingly high prices today, has a plastic frame with a relatively small edge to which the original speaker cloth is attached to. Moreover, the slot between the frame and the cabinet is extremely narrow. This construction makes it impossible to staple the speaker fabric to the frame (the method of choice with wooden frames) or to use of hook fastener tape instead. 

This is where our special spray adhesive comes into play. The adjustable nozzle of the container ensures convenient and economical application of the adhesive without any scattered spray mist and the high immediate adhesion of the adhesive provides for the easy and precise mounting of our sound-transparent fabric on such frames. It’s the perfect solution whenever you want to make speakers with plastic frames look like new.

JBL-LX-55-with-Akustikstoff-speaker-coth

»Your adhesive is really good for mounting fabrics. Very easy to use, no spill, and good adhesion. I used it for my JBL LX55 speakers with your grey cloth (colour code 14). I also refurbished a pair of Bose* 601 series 1 speakers with your beige fabric this year and I am perfectly happy with the result«, wrote Emmanuel D. from Digoin in France as he proudly sent us some photos of his speaker refurbishment projects. 

JBL-LX-55-and-Bose-601-refurbished -with-Akustikstoff-speaker-fabric

*All brand names are registered trademarks of their respective owners and are not in any way associated with Akustikstoff.com. 

DIY Embellishment: Covering AV Furniture With Acoustic Cloth

Sometimes it’s the little things that make small rooms look friendlier, less cluttered, and more attractive. That’s why it is a good idea to cover the often small-sized compartments of an AV rack in such a room with Acoustic Fabric in a matching colour. The immediate effect is that the entire room appears more straightforward and comfy.

Making such a cover doesn’t require any distinct DIY skills. All you need to build is an accurately fitting wooden frame with a hinge and a magnetic catch. Cover this frame with an appropriately sized piece of Akustikstoff.com Speaker Cloth (watch the tutorials on Youtube for details) and you’re done. The Acoustic Cloth lets infrared signals pass easily, so remote controls for receivers, amplifiers, etc. will work through the closed front, while all equipment along with the centre speaker or a soundbar remain hidden – as well as the countless little thingies that inevitably tend to accumulate in such a shelf over time.

DIY project with speaker cloth from Akustikstoff.com

A nice example is the AV-shelf our customer Nicolas T. from Joinville le Pont in France DIYed lately with Akustikstoff.com Standard Speaker Cloth. He kindly emailed us some photos of his project for this blog.

MC Audiotech chooses Akustikstoff.com as OEM supplier

MC Audiotech is a new name in high end audio, but the people behind the company and the products are not. With over 60 years of combined experience in the high-end audio industry through Linaeum, Impact Technology, and Veloce Audio plus an array of patents that speak to true innovation under their belt, they are driven by the true passion to develop trendsetting products that serve both the needs of most demanding customers and the music. 

The company, which is headquartered close to Philadelphia in the U.S. state of Pennsylvania, now offers a brand-new speaker system, the »Forty-10«. MC Audiotech say that this speaker truly »mirrors the sound of real-world voices and instruments«.

A brief summary gives a hint at this amazing speaker’s characteristics:  The »Forty-10« is a two-way design consisting of in-house designed and built proprietary transducers mounted in a double-curved so-called »spaced array™« and a separate »folded cube™« low frequency enclosure. 

MC Audiotech claim that their system is so efficient that can be driven by as little as 15 watts from the softest pianissimos to the most massive crescendos and is seriously full range, treating the lucky owner to a complete presentation of the recorded information, regardless of genre. 

MC Audiotech speaker eqipped with Akustikstoff.com speaker fabric
»Forty-10« speaker by MC Audiotech

Visually, the speaker is an elegant nod to mid-20th-century modern design. By default, it comes in a satin walnut veneer with bright aluminium work and grille covered with Akustikstoff.com’s off-white speaker fabric. Other options for material and finishes are available. One example is the Figured Maple option which is paired with black metalwork and beige speaker cloth from Akustikstoff.com.

We are delighted to have contributed to the creation of this wonderful product with our Standard Speaker Cloth. The »Forty-10« by MC Audiotech gives further proof of the fact that the quality of our fabrics meets even the highest demands of proven high-end professionals.

Simply Great: Individual Speaker Cloth Pre-Cuts

Speaker cloth laser pre cuts by Akustikstoff.com.

Quiz question: What does our boss present in this photo? A new, even more sound-transparent speaker fabric? Nice try, but not even close! Such grids remain when we produce individual pre-cuts of our speaker cloth.
Manufacturers of consumer electronics, AV furniture, vehicle components, and even slot machines are increasingly relying on such laser-cut pieces of our speaker fabrics produced exactly to provided standard CAD data.
As required MOQs are extremely small and lead times are next to none, Akustikstoff.com pre-cuts are also worth thinking about for companies that only produce very short production runs: Any tedious – and in most cases little precise – cutting of the fabric on the shop floor is eliminated, the pre-cuts can be processed immediately. On request, we can even “engrave” the speaker fabric, for example with a product name or a company logo.

Speaker cloth pre-cuts by Akustikstoff.com

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

Standard Speaker Cloth Now Starting at Only €9.98

More and more loudspeaker manufacturers, AV furniture specialists, studio builders, and automotive suppliers rely on our Standard Acoustic Cloth. Now we’ve extended our quantity scale to meet the demands of bulk purchasers even better. Discover our new price breaks for larger volumes now.

Standard Acoustic Cloth - price breaks as at 2019

Colour Trend 2019

A lively, warm and gentle tea rose hue has been designated the »color of the year 2019«. It »appears in our natural surroundings and at the same time, displays a lively presence within social media«, explained color specialist Pantone LLC as they presented their choice, which they decided to call »Living Coral«.

Presumably Strong Trend
The color of the year 2018, a bold, bright, and somewhat pompous violet referred to as »Ultraviolet« didn’t really catch on. For the much more harmonious tea rose hue »Living Coral«, chances are expected to be much better. It is expected to become a dominant trend in fashion, consumer goods, and even interior design next year. The trend was already looming on the catwalks lately. Tea rose and coral hues are playing an important role in spring fashion from Prada, Hermès, Brandon Maxwell, and Giambatista Valli for instance, while Calvin Klein, Moschino, and other fashion labels already used them in their 2018 fall collection.

Speaker fabric in
Always on trend in 2019 with speaker fabric from Akustikstoff.com in «Tea Rose«

Sound-transparent Fabrics in the Colour of the Year
Speaker cloth from Akustikstoff.com in Tea Rose keep you well prepared for the upcoming trend. The colour is available as a Standard Acoustic Cloth (colour code 35), as water-repellent and stain-resistant Acoustic Cloth 2.0 (colour code 135), and as nonflammable Acoustic Cloth FR, which is particularly suitable for public buildings (colour code 235).

Design Hints
Tea Rose can be harmoniously combined with many colours – another big difference to last year’s somewhat conceited violet. It comes especially nice when combined with speaker fabric in Pastel Blue (color code 34) – a combination that creates the positive, maritime yet warm color play of a coral reef, to which Pantone themselves refer in their video for their color of the year 2019. Artichoke (47), Navy Blue (38), Light Ochre (20), Off Yellow (21), and Green Tea (40) also make for attractive, warm, summery combinations.

Video: Flame Test of Acoustic Cloth FR

This video shows that our new Acoustic Cloth FR is actually nonflammable. That’s why Acoustic Cloth FR is the perfect choice whenever a sound-transparent fabric is required for public buildings.

Play it Safe With Acoustic Cloth FR

We raise the bar for sound-transparent fabric again: Our new Acoustic Cloth FR is non-flammable and will fulfil the dreams of many architects, interior designers, stand builders, and PA techs.

It’s a speaker cloth the world has been waiting for: Flame-retardant, easy to work with and elastic, with excellent acoustic and aesthetic properties,  available off the shelf in numerous attractive colors. Our newly developed Acoustic Cloth FR makes the world of sound-transparent fabrics significantly better.

Akustikstoff FR ist nach NFP 92502 als nichtbrennbar (M1) zertifiziert.The renowned French test institute FCBA has certified Acoustic Cloth FR to be nonflammable according to the European standard EN 13773-1 as well as to the much more demanding French standard NFP 92503 M1. It puts an end to a notorious problem that bothered architects, interior architects, PA and event technicians day by day: So far, applicable fire protection regulations and the use of visually attractive, sound-transparent fabric in publicly accessible buildings didn’t go well together.  Sound-transparent, visually appealing speaker fabrics  are usually made of flammable plastic fibres. But building codes and other regulations—as well as technical guidelines that are part of many contracts—require fabrics to be certified at least fire retardant (FR)  according to EN 13773-1.

For the first time ever, this dilemma can be considered solved. Our non-combustible Acoustic Cloth FR combines optimal preventive fire protection and outstanding acoustic properties and is available in 42 different colours right off the shelf with no lead time. The nonflammable (M1) speaker cloth exceeds the fire retardancy requirements that are part of most tenders. According to the FCBA test results, it’s about as combustible as plasterboard.

Whether used as speaker fabric or in decorative applications that require acoustically transparent fabric: Acoustic Cloth FR enables optimum fire protection without compromising on sound transparency in architecture and interior design as well as in exhibition booth building, stage building, shop construction, advertising technology, and at exhibitions, concerts, and events—and last but not least in the entire catering sector.

Acoustic Cloth 2.0 – Dustproof? Oh Yes!

It all started with an enquiry from Nevada: A customer wanted to know whether our acoustic fabric would be dustproof enough to protect a couple of Bose F1 Arrays from exposure to dust during this year’s Burning Man festival. Good question. We didn’t have any  empirical data, as we’d usually focus on sound permeability and translucence (or rather the opposite) in the development of our speaker fabrics. But the question piqued our curiosity and we wanted to come up with a proper solution. We decided to use superfine flour as an imitation of the dust in Black Rock Desert. Not the worst idea: Marc-Antoine from Nevada replied that “superfine wheat flour is a good approximation of Burning Man’s dust.”

Our DIY test setup for dustproofness test of Acoustic Cloth 2.0 from Akustikstoff.comThe core of our test setup consisted of a piece of our stain-resistant and water-repellent Acoustic Cloth 2.0, an empty cardboard box, and  a DIY “flour cannon” made of a cardboard roll core and several bits and pieces. We pointed the “cannon” to the speaker cloth at a distance of about 20 cm. Dried pressurised air at about 80 psi from our workshop was used to propel the flour towards the fabric. The measured air speed (and, consequently, the exit velocity of the flour) at a distance of about 10 cm from the cardboard tube was 27 knots (which equals 50 km/h or wind force 6). Not bad, eh?

We wasted the first pack of flour to find that one layer of fabric isn’t sufficient in our view. We weren’t happy with the amount of flour that went through. So we modified the setup and attached two layers of fabric. The distance between the two layers was about 1.5 inches and the frame with the first layer was slightly tilted to prevent the flour particles from building up between the two layers and instead simply drop to the ground. Admittedly a somewhat shaky impromptu installation that wouldn’t meet the requirements for whatever ISO certification, but good enough for our purposes.

dustproofness of Acoustic Cloth 2.0 from Akustikstoff.com proven with a testThe result of this second round made us happy, as there were only very few particles still going through the two layers of speaker fabric. We found just a little dust on the ground of the box, after we’d propelled another full pack of flour towards the front of the construction and finally cleaned both with an air nozzle before opening the box.

We’ve uploaded a video of this test on Youtube, so why not have 90 seconds of fun, watch this bonkers and weird dustproofness test, and judge for yourself.

Acoustic Cloth Samples: Why They Make So Much Sense

Every week we receive a considerable number of emails that go like “I’ve seen a photo of this and that piece of furniture on your blog. What is the colour of the acoustic fabric?” If you’re about to drop us a similar email, please hang on for a sec and read the following lines first.

As we know where the photos come from (we have many customers who send us photos of their pieces of work and are happy to see them featured on our blog), it’s easy for us to answer such questions precisely. However, the answer could be pretty useless anyway.

The problem is that the screen reproduction of colours in RGB colour mode can (and in most cases, especially with Windows computers and budget monitors, does) differ considerably from the actual colours of the objects in a photo, Unless your screen is set to a white point of D65 and precisely calibrated with a colorimeter, certain colour aberrations are virtually inevitable. On top of that, lighting conditions and individual camera settings have noticeable additional impact on how colours are reproduced in a photo.

This means that if you only use a photo to choose the colour for your piece of our Acoustic Cloth, what you get may not be what you’ve seen and expected. Sure we accept returns in most cases and are happy to exchange them for another colour. But it will delay your project, you’ll have to cover the postage if you return an order, have to bring it to the next post office and so on.

Why not avoid all the hassle by ordering a sample set? It will provide you with an absolutely reliable  way to find the right colour for your project if go for anything else than black or white. They are about postcard size, so they also give a good impression of how the fabric appears as a larger surface.

packaging acoustic speaker cloth samplesDon’t get us wrong: The reason behind this blogpost is not to increase the turnover from sample sets. Okay, we charge a couple quid for them, but if you consider the material costs (the production of 100 sample sets requires a whopping 90 square metres of speaker fabric) plus the time-consuming work of putting the sets together, you’ll find that we don’t make any money from samples. We rather subsidise them to offer our customers a reliable and convenient way of finding the right colour.

Beovox CX50 and CX100 upcycled

The great days of the classic passive loudspeaker seem to be over: In times of AirPlay, DLNA, and streaming, WLAN loudspeakers are virtually ubiquitous. On the other hand, however,  true audiophiles and devotees of classic hi-fi technology still prefer sound reproduction at the highest possible level to the convenient, wireless omnipresence of MP3-compressed music. Are these totally incompatible points of view, or is there a way to combine the outstanding acoustic characteristics of venerable passive speakers such as the Beovox CX50 and CX100 with the advantages of sophisticated WLAN technology?

Upcycled Beovox CX50 with Akustikstoff.com speaker fabricThere is indeed, at an amazingly high level. The solution entered the market last year: the Beocreate 4CA. This four-channel amplifier, designed by the Swiss company HiFiBerry together with Bang & Olufsen, updates passive loudspeakers to state-of-the-art active speakers with full wireless functionality in a few simple steps. Even better, this handy DIY solution works with speakers from all manufacturers.

The folks at HiFiBerry refer to the digital upgrade of vintage speakers as “upcycling”, and it doesn’t sound odd: Updating excellent passive hi-fi speakers surely makes much more sense than the »creative« utilisation of (most often new) Euro pallets for trendy but rather uncomfortable garden furniture and the reuse of scrap tire snippets as equally uncomfy shoe soles.

And if you’re already about to upcycle your speakers with the smart Beocreate device, why not attach new cloth to your speakers as well? After all, the speaker fabric used with most B&O speakers is extremely delicate and most probably got a bit long in the dent anyway – just like may be the case with most other vintage speakers. Unfortunately, most manufacturers have been a bit too keen on saving a few quid by using budget speaker fabric. But the HiFiBerry staff have also spent a few thoughts on the visual refurbishment of old speakers: They’ve come up with a blog post in which they describe how to replace the speaker cloth of the popular 80s classics Beovox CX50 and CX100. It’s more or less a matter of course that they also rely on the highest possible quality for the speaker fabric. That’s why they recommend products from Akustikstoff.com: https://www.hifiberry.com/blog/changing-the-spaker-fabric-of-your-beovox -cx-50 cx100

HiFiBerry is no stranger to DIY hi-fi circles around the world: The leading provider of audio add-ons for the Raspberry Pi has a clear focus on high-quality sound. For several years, HiFiBerry has been developing hardware-on-top modules and digital interfaces – some of them with onboard amplifiers that are mounted directly on the Raspberry Pi. HiFiBerry boards can be used to create streaming players and media centres, but also to customise multi-room setups.

Scandinavian Design Meets Our Acoustic Cloth

Excellent workmanship, glorious Scandinavian design, and individual, custom-made production a– that’s what the Danish carpenter Per Plauborg and his company Hifimøbler.dk stand for.

AV furniture from Hifimøbler.dk, with cover fabric from Akustikstoff.comPer’s aim is to make custom-made AV furniture of outstanding quality that meets any customer’s individual taste and demand. All furniture is tailored to the individual customer in terms of color, size, number of shelves, cable holes, and any accessories, such as drawers and legs, wheels, and wall-mounting options. This way, AV furniture from Hifimøbler.dk suits any audio and video equipment and at the same time contributes to an elegant Scandinavian home furnishing style.

AV furniture from Hifimøbler.dk, with speaker fabric from Akustikstoff.comIf you want your Hifi and video equipment as well as similar gear ready for use at all times but still perfectly hidden away in a great piece of handmade design furniture,  Hifimøbler.dk will provide the perfect solution. All furniture is prepared for inside and outside cabling within and between the modules. This way, all cables are hidden, ensuring that the living room always looks tidy and stylish. Even better, these great pieces of furniture come at a price you’d usually expect for standard run-of-the-mill pieces.

Per Plauborg uses fabrics from Akustikstoff.comPer places great emphasis on quality and the compelling craftsmanship of which he is justifiably proud. It’s no wonder, then, that he has chosen fabrics from Akustikstoff.com for the front covers of his furniture. The outstanding acoustic properties of these acoustic fabrics ensure perfect sound reproduction even if the speakers are placed behind the doors. At the same time, the specially designed  acoustic cloth lets infrared signals pass through, so remote controls even work with closed doors.

Akustikstoff Goes Art

»Afgang« is the name of the  MFA degree show of the of the Kongelige Danske Kunstakademi, the Royal Danish Academy of Fine Arts. It is taking place at the moment at the Kunsthal Charlottenborg  in Copenhagen. The exhibition curated by Henriette Bretton-Meyer features works from twenty-five graduates from the Royal Danish Academy of Fine Arts’ Schools of Visual Arts. It will be on display until 20 May 2018 and is well worth a visit. If you happen to be in Copenhagen before the end of May, make sure not to miss it.

Outside view of a piece of art by George Koutsouris.One of the featured artists is George Koutsouris, who has created »a strangers’ attractor«, a large installation that reminds a bit of a spider at first sight. If  you dare to walk around that somewhat repellent object, you will discover a colourful inside that features pieces from  Danish astronaut Andreas Mogensen’s space capsule and an interesting soundscape: With the support of various sponsors, Koutsouris has built a kind of sound machine that uses the black tubes to collect voices and ambient noise from other rooms, even from outside the building, and reproduces them in the strikingly colourful inside, full of artificial echoes. The impressive work is meant to demonstrate power and creepiness, but also opportunities.

A piece of art by George Koutsouris, supported by Akustikstoff.comYou may ask what all this has to do with our speaker fabrics. Quite easy: Artists depend on support, and we are committed to supporting art in all its forms. So we decided to contribute to this extraordinary piece of art along with a couple of other companies such as Dayton Audio and Odeon. Our Acoustic Cloth, which is available in 42 colours, provided the opportunity to realise the inside of the »strangers’ attractor« exactly as it had been conceived by the artist.

For more information about George Koutsouris and his work, simply visit his Facebook page, which also documents the making of the exhibit.

Akustikstoff.com supported a piece of art by George Koutsouris.More information on the exhibition is available in the online version of the exhibition catalogue.

All photos by the artist.

How to Tell the Quality of Acoustic Fabric

The range of textiles that are offered as speaker cloth or acoustic fabric is almost impossible to grasp, particularly on the Internet. But what makes a true acoustic cloth? Here’s a short quality checklist:

1. Maximum sound transparency

Sound measurements of acoustic fabric from Akustikstoff.comAcoustic information, i.e. sound waves, must be able to penetrate the material as freely and unchanged as possible. Unsuitable fabrics will impair the sound—especially the high and high-mid frequencies—because sound waves are absorbed or diffused. That’s why simple air permeability is no sufficient criterion for the quality of a speaker fabric or acoustic cloth.

Only lab measurements will reveal what a specific fabric is actually suitable for. A direct comparison of measuring results generated with different types of speaker fabric reveals that even a double-layer of standard Acoustic Cloth from Akustikstoff.com is more sound transparent than other polyester or linen fabrics.

By the way: Strictly speaking, fabrics like molleton, which are meant to absorb sound rather than let it through, are not an acoustic fabric but an insulating material.

2. Sufficient opacity

knitting machine for acoustic fabricA good acoustic fabric bridges the physical gap between sound transparency and opaqueness. It will usually be developed exactly for this purpose and produced on state-of-the-art machines, which make an appropriate material structure possible. After all, the fabric is used as speaker fabric, as cover fabric for acoustic elements such as absorbers, diffusers, and bass traps, for AV furniture and instrument amplifiers such as guitar amps, in the car hi-fi sector, and last but not least for cladding in shop fitting, exhibition stand construction, and interior design. Of course, there are physical limits to opaqueness. You can find some more details on this topic here.

3. Elasticity

protoype equipped with speaker cloth from Akustikstoff.comAcoustic cloth requires some tension to ensure an even surface of the cabinet front. That’s why it needs to offer exactly the right amount of horizontal and vertical elasticity. Any fabric that is too elastic will warp during processing and crinkle or buckle after a while. If it’s too rigid, on the other hand, workability will suffer, which can also cause crinkles. Standard Acoustic Cloth from Akustikstoff.com can even be easily stretched around several edges and finally stapled to the frame, as this photo of a model for the speaker cover of a high-end loudspeaker shows. With the topic of stapling we get straight to the next point:

4. Ruggedness

Extra-robust PA-Type Acoustic Cloth from Akustikstoff.comSpeaker fabric is often stretched around hard edges and stapled (watch this tutorial to see how it works), and high-quality acoustic fabrics are durable enough to stand this procedure without laddering or tearing. The weight of a certain speaker cloth usually is a good hint at its stability: Fabrics that weigh between 90 and 140 grams per square metre consist of a single layer of very thin yarn—which puts them close to nylons. No wonder they are similarly sensitive. Akustikstoff.com offers only robust double jersey with a weight of 180 grams or higher per square metre. The particularly rugged PA-Type Acoustic Cloth, which is equipped with a special protective net on the front, even reaches 550 grams without any loss in sound transparency.

5. Even structure

cheap, uneven, lightweight speaker fabricCloseup of Akustikstoff.com fabric

 

 

 

 

 

 

High-quality acoustic fabric is characterised by its even structure. It’s quite easy to distinguish good material from cheap qualities at first sight in direct comparison. Simply have a look at the image: The crinkled fabric on  the left is an imported fabric from somewhere in East Asia. It is offered at prices of about 8-10 euros per square meter by various stores on the Internet and on Ebay without any information about the origin and the manufacturer of the fabric. On the right there’s a photo of the more expensive proprietary fabric made in Germany by Akustikstoff.com–of course taken from the same angle and from the same distance.

6. Flawless workmanship

Faults in cheap speaker fabricAcoustic cloth is a rather delicate fabric, so only high-quality raw materials and perfect processing in all steps can prevent quality defects. And as always, careful processing and consistent, fastidious quality control have their price.
An example of common quality defects are ugly traces of worn needles. Actually, this should be an absolute no-no for any supplier. Such fabrics are clearly seconds that any professional customer will reject. Unfortunately, such defects are quite common with low-cost no-name speaker fabrics such as the budget cloth in our example. Taking a look at the fabric at backlight conditions clearly shows the sloppy work. If you attach some importance to detail in the realm of your hi-fi and AV equipment, you will most probably not be pleased with such speaker fabric.

Uneven colouring due to the use of non-mixed, uncontaminated yarn is another quality flaw that can often be observed with cheap speaker cloth. It is particularly noticeable with dark colours, when somewhat lighter stripes cause an irregular surface. That’s why acoustic fabrics from Akustikstoff.com are exclusively made from high-quality, white polyester yarns.

7. HSE and social responsibility in production

Yarn for Akustikstoff.comAzo dyes, formaldehyde, heavy metals … There’s quite a number of hazardous chemicals that may be hidden in textiles, and the use of some of them is still not sufficiently regulated by law. Even worse, the main reason for the use of these questionable substances, which are still often found in imported textiles, is to ensure cheapest possible production processes. Questions about potential risks for humans and the environment and about the working conditions under which these fabrics are produced are simply ignored. At first glance, the end product may seem “inexpensive”, but closer inspection often brings a different picture to light.
That’s why all fabrics in the product range made by Akustikstoff.com are certified according to the OekoTex 100 standard. This long-established standard contributes to high and effective product safety. The test criteria and limit values often go well beyond the national and international requirements, extensive product controls and regular company audits ensure compliance with the strict guidelines.

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