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Comment assurer une livraison rapide et sans problème de votre commande ?

Le suivi actif de la livraison de Akustikstoff.com est plus important que vous ne le pensez.

Votre commande sur notre boutique en ligne est-elle déjà en route vers vous ? Si c’est le cas, vous avez reçu un e-mail de notification d’expédition avec un numéro de suivi. Utilisez ce numéro pour suivre activement votre envoi. Le jeu en vaut la chandelle.

De temps en temps, nous recevons des e-mails et des appels de clients qui signalent des problèmes avec la livraison de leur envoi et nous demandent de l’aide. Toutefois, à quelques exceptions près, nous ne pouvons pas faire grand-chose dans de tels cas. Les opérations des services de colis échappent totalement à notre contrôle, surtout en dehors de l’Allemagne. Néanmoins, il y a plusieurs choses que vous pouvez faire à l’avance pour éviter une grande partie des tracas typiques des services de colis. 

Cet article vous explique comment mettre en place les conditions d’une livraison sans problème de votre commande. Commençons par examiner les causes de la grande majorité des problèmes, car, comme toujours, comprendre l’origine des problèmes permet de les éviter dès le départ.

Des livreurs surchargés de travail 

Vous attendez-vous encore à ce qu’il y ait plusieurs tentatives de livraison avant qu’un envoi soit considéré comme non distribuable et renvoyé à l’expéditeur ? Il est temps de dire adieu à cette idée. Aujourd’hui, les services de livraison sont étonnamment rapides à renvoyer un envoi en raison d’une erreur d’adresse insignifiante, d’un code de porte manquant pour un bâtiment, ou simplement parce que la réception d’un immeuble de bureaux est inoccupée à la minute même dont un chauffeur de livraison a besoin pour apparaître et disparaître ensuite.

Vous pouvez également dire adieu à l’espoir que les livreurs vous téléphonent, vous envoient un SMS ou un e-mail, quel que soit le nombre d’options de contact imprimées sur l’étiquette d’adresse d’un envoi. D’après notre expérience, le contact téléphonique n’est plus établi que pour les envois express. Dans tous les autres cas, le chauffeur-livreur, qui, selon toute vraisemblance, est un exemple parfait de travailleur indépendant surchargé et sous-payé, s’efforce de faire sortir l’envoi de la camionnette encombrée de trop nombreux colis Amazon le plus rapidement possible. Franchement, les conditions de travail ne laissent pas de place à un service supplémentaire, même minime. Ne blâmez donc pas le chauffeur.

Livraison d'un colis de Akustikstoff.com
Le volume des colis est en constante augmentation et la plupart des chauffeurs de livraison sont terriblement surchargés de travail. Veuillez faire en sorte qu’ils puissent livrer votre commande chez Akustikstoff.com sans effort.

N’attendez pas de notifications

Après une seule tentative de livraison, les envois sont souvent déposés pour être retirés dans un dépôt (point d’accès UPS, bureau de poste, etc.). Et, dans de nombreux pays, il ne faut pas s’attendre à ce qu’une notification correspondante atterrisse dans votre boîte aux lettres. Dans le pire des cas, votre tissu acoustique tant attendu nous sera retourné sans autre notification après environ 10 jours dans le dépôt. 

De la même manière, les articles sont de plus en plus souvent “livrés” à un endroit aléatoire, quelque part sur la parcelle ou à proximité immédiate de l’adresse de livraison. Et, là encore, la carte de notification attendue peut manquer. Dans ce cas, l’article est marqué comme “livré” dans la base de données du service de colis, mais il peut être presque impossible d’identifier son emplacement réel ou de le récupérer. Cela peut être particulièrement ennuyeux pour les clients professionnels qui attendent de toute urgence notre tissu acoustique afin de maintenir leur production.

En outre, la grande majorité des services de colis effectuent encore des “livraisons sans contact” comme mesure de protection contre Covid-19. Cela peut rendre encore plus compliquée la recherche de l’endroit où se trouve un article et de la personne qui a accepté l’envoi.

Surveillez en permanence votre livraison de tissu pour haut-parleurs 

Une fois que vous êtes au courant de tout cela, vous pouvez prendre les mesures appropriées pour vous assurer que votre envoi de Akustikstoff.com arrive à la destination souhaitée à temps et de manière fiable. Nous faisons tout ce qui est en notre pouvoir pour que cela soit possible. C’est pourquoi nous expédions toutes les commandes avec un numéro d’identification de l’envoi qui permet de suivre le colis sans problème.

Si vous avez passé une commande dans notre boutique en ligne, vous recevrez automatiquement une confirmation d’expédition avec une numéro de suivi cliquable vous permettant de suivre l’envoi directement sur le site Web du service de colis. Vous pouvez suivre l’ensemble du processus d’expédition et, en général, consulter toutes les adresses de livraison enregistrées par le service de transport de colis.

Facilitez activement une livraison sans problème de votre tissu acoustique

Vérifiez d’abord l’exactitude et l’exhaustivité de ces données d’adresse. Si vous découvrez une erreur, contactez immédiatement le service de colis et faites-la corriger. Dans la plupart des cas, vous pouvez le faire directement en ligne. Toutefois, certains prestataires vous demanderont d’abord de créer un compte client. 

Vérifiez ensuite la date de livraison prévue. L’idéal est de prévoir la présence d’une personne à l’adresse de livraison ce jour-là. Si cela n’est pas possible, il vaut mieux changer la date ou l’adresse de livraison bien à l’avance. La plupart des services de colis vous permettent également de délivrer une autorisation de dépôt unique pour un lieu précis.

Livraison personelle d'un colis de Akustikstoff.com
La livraison personnelle d’un envoi est devenue rare depuis Covid-19.

Nous avons également entendu dire que les chauffeurs évitent tout simplement les livraisons qui les obligent à monter plusieurs étages et se contentent d’envoyer les colis directement à un dépôt pour les récupérer. Bien que cela ne soit pas agréable, il n’y a pas grand-chose que l’on puisse faire, et cela semble se produire assez souvent de nos jours, surtout dans les villes. Grâce à le numéro de suivi, vous pouvez au moins savoir immédiatement si votre envoi a été mis à disposition pour être retiré dans un dépôt près de chez vous.

Comme vous pouvez le constater, le numéro de suivi figurant dans notre e-mail de confirmation d’expédition est la clé d’une livraison sans problème. Profitez de cette opportunité !

Restez au courant

Il est très important de suivre de près l’envoi jusqu’à ce que vous l’ayez reçu. Après tout, la grande majorité des problèmes surviennent sur le proverbial dernier kilomètre. Un suivi constant vous permet de savoir si l’article est toujours en route ou s’il a déjà été livré, déposé dans un dépôt ou livré à une autre adresse. Dans la plupart des cas, une preuve de livraison avec les détails pertinents est également fournie. Ces éléments peuvent vous aider à entrer en possession de votre colis le plus rapidement possible. 

N’oubliez pas que le temps presse une fois que votre envoi a été déposé dans un dépôt. Les colis qui ne sont pas retirés dans un délai maximal de deux semaines (plutôt moins) seront renvoyés – ce qui est un désavantage pour les deux parties, car vous n’obtiendrez pas le tissu acoustique tandis que nous nous voyons facturer des frais de retour exorbitants.

N’oubliez pas de vérifier votre dossier spam

Si vous avez passé une commande en ligne, notre système génère immédiatement un e-mail de confirmation de commande. Si vous n’avez pas reçu cet e-mail, vérifiez le dossier spam de votre programme de courrier électronique – et continuez à le faire, car il est très probable que la confirmation d’expédition avec le numéro de suivi s’y trouve également. 

Le remède simple pour les cas futurs : mettez le domaine akustikstoff.com sur votre liste blanche. Ne vous inquiétez pas, nous n’envoyons jamais d’e-mails publicitaires et empêchons nos systèmes de diffuser des spams. 

Évitez les problèmes avant même de passer votre commande

Veillez à vérifier les points simples suivants avant d’envoyer votre commande en ligne. Cela contribue grandement à assurer une livraison rapide et sans problème de votre envoi :  

• Avez-vous saisi votre adresse électronique correctement et sans faute de frappe lors de la passation de votre commande ?

• L’adresse de livraison indiquée est-elle correcte, complète et précise ?

• Lorsque vous commandez par Paypal Express : Votre adresse de livraison correcte figure-t-elle dans le fichier de Paypal ?

• Avez-vous indiqué votre numéro de téléphone pour les demandes de renseignements ? Un numéro de téléphone est toujours requis pour les envois express, mais il peut aussi être extrêmement utile dans d’autres cas.

• Disposez-vous d’une sonnette bien lisible ou d’une enseigne d’entreprise portant le nom figurant dans l’adresse de livraison ? Si ce n’est pas le cas, la livraison est presque assurée d’échouer.

• Votre boîte aux lettres est-elle facile à trouver et clairement identifiée ? C’est le seul moyen de permettre au chauffeur de vous laisser un message si nécessaire.

Informations complémentaires de Shipcloud

Nous traitons la quasi-totalité de nos envois avec l’aide de Shipcloud, et nos clients reçoivent également un message de Shipcloud si des problèmes avec l’envoi sont signalés par le service de colis. 

Si vous recevez un tel message, veuillez contacter immédiatement le service de colis concerné pour résoudre le problème. N’oubliez pas qu’il ne sert à rien de nous contacter. Nous ne disposons d’aucune information autre que les informations de suivi et ne sommes pas habilités à agir en votre nom auprès du service de livraison local. Nous ne pouvons vous aider que si l’envoi est perdu ou complètement mal livré, et, bien sûr, nous serons heureux de le faire. Mais croisez les doigts pour que cela ne soit pas nécessaire une fois que vous aurez pris toutes les précautions décrites ci-dessus.

Epier des grenouilles avec tissu acoustique 2.0

La grenouille à ventre blanc (geocrinia alba) est une espèce extrêmement petite qui ne vit que dans une zone tout aussi petite. Scientifiques ont découvert que la surface totale occupée par ces grenouilles extrêmement menacées est inférieure à 2 kilomètres carrés de zones marécageuses dans la région de Margaret River, au sud-ouest de l’Australie-Occidentale. Une espèce aussi endémique attire naturellement l’intérêt des scientifiques.

Les biologistes de l’université de Western Australia souhaitaient enregistrer les bruits distinctifs des grenouilles afin de mieux comprendre le comportement de ces animaux. Mais dans un environnement humide, cela pose des problèmes particuliers. Ils ont donc pris contact avec Soundlabs Group à Mittagong, en Australie, notre partenaire de distribution pour la région Asie/Pacifique.

“Mon application n’est probablement pas très conventionnelle”, a écrit Emily Hoffmann, doctorante à l’école des sciences biologiques de l’université de Western Australia. “Je travaille avec des grenouilles en danger critique d’extinction en Australie-Occidentale, et nous essayons de surveiller leur comportement d’appel à distance en utilisant des enregistreurs audio que nous pouvons déployer sur le terrain. J’ai fabriqué des étuis résistants à l’eau pour les enregistreurs audio, mais je dois couvrir les trous des microphones avec quelque chose de résistant à l’eau qui n’interférera pas avec la capacité d’enregistrement.”

Leon Gross, le propriétaire de Soundlabs Group, a été plus qu’heureux d’apporter son aide. Il a fourni aux biologistes une partie de notre tissu acoustique 2.0 hydrofuge. Ce tissu spécialement traité, qui a déjà prouvé ses qualités particulières dans de nombreuses applications telles que les haut-parleurs extérieurs ou la construction de yachts, recouvre désormais la section où se trouve le microphone, de sorte que toute pluie ou goutte d’eau s’écoule sans que la technologie à l’intérieur des boîtiers ni la qualité des enregistrements ne soient affectées.

L’un des appareils d’enregistrement équipés de tissu acoustique 2.0 d’Akustikstoff.com. Les appareils sont utilisés pour surveiller les grenouilles à ventre blanc en Australie-Occidentale.

Pour en savoir plus sur la grenouille à ventre blanc et le projet de recherche, qui est soutenu par plusieurs fondations et associations, lisez cet article (en anglais), qui a été publié par “The Naked Scientists”.

Individual Speaker Fabric Samples

You’re not one hundred percent sure which of our 42 standard colours best suits your project? You don’t trust the colour reproduction of your computer screen because you know about the pitfalls of colour reproduction within digital systems that are not consistently calibrated? Or you’d like to receive speaker fabric samples in order to get a hands-on impression of our various types of acoustic cloth before you place an order? 

It always makes sense to take a close look at the original product before making a purchase decision. But this doesn’t always require a complete sample set. That’s why we’ve decided to provide the opportunity to order individual samples directly in our online shop. 

Individual samples of Akustikstoff.com speaker fabric
Choose up to 15 different speaker fabric samples

Select up to 15 different speaker cloth samples of your choice. Combine different fabrics, such as standard, 2.0 and FR, and different colours according to your particular requirements. This opportunity is the perfect basis for an informed decision. Click here to discover our new individual sample service.

Of course, you can still order our sample sets. They are unbeatable as a source of inspiration and remain the perfect reference for all resellers. 

New international distribution partner

Our international distribution network keeps growing – much to the benefit of our customers, as it makes our products increasingly available in non-EU countries.

Akustikstoff.com distribution partner Cinert
Cinemart in Natanya, Israel, is a boutique company specializing in the planning, supervision, sale, and installation of audio-video systems, home theatre rooms, control and monitoring, smart electricity, and computer communication networks. Cinemart is a member of Cedia and leads the global scene of tailor-made private screening rooms and advanced audio-video calibration methods.
With our products also attracting increasing interest in Israel, our new Israeli distribution partner Cinemart is now making them easily and conveniently available to all customers in Israel.

»Color of the Year 2020« An Ageless Classic Blue

Trust, hope, peace, and tranquility are properties that are traditionally associated with the colour blue. No great surprise, then, that the Pantone® Color Institute has made a very classic, neutral blue the “Colour of the Year 2020”. After all, our life feels considerably more turbulent than a decade ago: Megatrends such as digitisation, along with political and social upheaval around the world, are contributing to a general longing for harmony and security. 

The calm, appealing, and confidence-inspiring deep blue colour of the year 2020 “lends itself to relaxed interaction. Associated with the return of another day, this universal favorite is comfortably embraced” says Pantone, explaining the choice of the colour that is expected to shape fashion and beauty as well as interior design and the design of electrical and electronic devices worldwide for the next twelve months. At Akustikstoff.com the colour of the year is available as “Navy Blue”.

When it comes to loudspeakers, “Navy Blue” spontaneously brings to mind JBL’s classic 43xx and 44xx studio monitors. These treasured vintage speakers still have a firm place in many studios and we have recently supplied the speaker fabric for countless refurbishment projects all over the world – evidence to suggest that blue speaker fronts will see a renaissance in loudspeaker manufacturing in 2020. 

Navy Blue, a particularly calm, balancing, and attractive hue, is a good choice for interior design purposes as well: It can be combined with black and white as well as with silver, gold, and numerous organic brown hues. 

Acoustic Cloth in Navy Blue is available as Standard speaker cloth (colour code 38), as water-repellent and stain-resistant Acoustic Cloth 2.0 (colour code 138), and as non-flammable Acoustic Cloth FR (colour code 238), which is particularly suitable for projects in public spaces.

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.

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.

Great Metallic Lustre, 9 Colours: Metallic Line Extended!

Akustikstoff.com Metallic Line speaker cloth comes in nine great coloursA speaker cover that matches the trendy rose gold of the iPhone? Why not! What might have been a dream for some of us has now become possible. We have extended the Metallic Line of our Acoustic Cloth with another five amazingly authentic, shiny colours. The truly unique speaker fabric now comes in nine highly attractive metallic hues. In addition to classics such as gold, silver, and copper, there’s speaker cloth in gorgeous steel blue, enormously authentic antique bronze, and brightly shining aluminium, among others.

Akustikstoff.com Metallic Line speaker cloth closeupMetallic Line acoustic fabric opens up completely new possibilities for loudspeaker, absorber, and studio design. The acoustically transparent, Oecotex-certified fabric also comes in particularly handy as a decorative fabric wherever a sophisticated and stylish metallic lustre is required—in interior design, fair stand construction, and shipbuilding, for instance.

Best visit the online shop for an overview or, even better, order a set of sample swatches immediately!

B&O Beolab 8000 Speakers Looking Like New Again

Beolab8000-with-akustikstoff-acoustic-clothThe Beolab 8000 from Bang&Olufsen an iconic example of elegant styling and good performance . It was one of the most successful B&O loudspeakers ever, remaining in the range for 18 years without any major change. Many music and home theatre lovers still hold the Beolab 8000 in the highest regard and consider it a purchase for life—no wonder in view of the whopping £2940 you had to cough up per piece in 2010 , which was the last year of production.

 

But as the saying goes, nothing is perfect. In the case of the Beolab 8000, the delicate speaker grill cloth was a definite downside. It didn’t take long and the speaker fabric looked much older than it actually was, which compromised the design (and reduced the value) of the speakers considerably.

 

refurbishment-of-beolab8000-with-akustikstoff-acoustic-fabricLuckily, it is quite easy and inexpensive to return the speaker front to its former glory. Our standard acoustic cloth does a perfect job on the Beolab 8000. Even better, the readily available 42 colours of Akustikstoff.com speaker fabric provide the opportunity to achieve a totally new, individual visual appearance and adapt them to your personal taste in a very unique way.

 

 

 

Beolab8000-with-akustikstoff-acoustic-cloth   Beolab8000-with-akustikstoff-acoustic-cloth

Speaker refurbishment of B&O Beolab 8000 with black Akustikstoff.com acoustic speaker cloth.

Opacity of Speaker Fabric – Technical Basics and Best Practice

You can’t eat the cake and have it:
Why an acoustically transparent fabric can’t be 100 percent opaque

“Is your Acoustic Cloth really opaque?” That’s a question our customers ask quite frequently. After all,  speaker fabric from Akustikstoff.com is primarily used to hide loudspeakers, AV equipment or whatever else as elegantly as possible without impairing acoustic transparency.

Strong contrast leads to marking with any acoustically transparent fabric.

Marking with acoustically transparent fabric: a deep black background remains somewhat visible under white speaker fabric.

The theoretical ideal is obvious, of course: absolute acoustic transparency plus absolute opacity (i.e., the opposite of transparency) at the same time. Unfortunately, the laws of physics counteract this ideal, since both sound and light are waves – temporal and local periodical changes of a physical quantity in the dry language of physics.

 

It’s all about waves

As sound propagates through the mechanical deformation of a medium, in our case by changes in air pressure, everything that is in the way acts like a kind of barrier: It is moved itself and starts vibrating, this way absorbing energy from the impinging waves, and it reduces the amplitude, i.e., the magnitude of the oscillation. That’s why a completely closed, airtight surface always attenuates sound waves. Depending on the material, the sound is “swallowed” by resonance and usually reflected or diffused to a certain degree at the same time.

Put the other way round, high acoustic transparency is simply impossible without openings, through which air – and thus the sound – can penetrate. Even the smallest apertures, however, can also be penetrated by visible light, which has a much shorter-wavelength. This effect can be experienced in a striking manner in a completely darkened room as soon as the door does not close completely on all four sides of the door frame.

 

Crucial: the higher frequency range

Insufficient acoustic transparency is most noticeable in the higher frequencies within the normal range of human perception: the short-wave, low-energy high frequencies and high mids are attenuated first, while energetic, relatively long-wave bass frequencies are noticeably less hindered. In practice, this means that unsuitable or inferior cloth for acoustically active elements usually eliminates exactly those acoustic frequencies that are of utmost importance for a sophisticated, well differentiated sonic image.

 

Exploring the limits of physics

The secret of high-quality Acoustic Cloth is that it lets sound waves pass through virtually unimpeded but blocks the light waves as much as possible. At Akustikstoff.com, we’ve performed a lot of research and development work to get this physical balancing act done in the best possible way. Nevertheless, it is in the nature of things that both objectives can’t be achieved to the full at the same time. In addition, there’s a third, no less important aspect to be considered in the development of loudspeaker cloth, and we’ve put quite some effort in it: robustness. That’s why all covering fabrics from Akustikstoff.com are remarkably durable and are very easy to process while they feature the highest possible opacity and excellent sound transparency. We’ll go a bit more into details on this in a separate article in the near future.

 

The opacity of dark speaker fabric is higher than that of brightly-coloured speaker cloth.

In pure incident light, dark colours tend to be more opaque than bright colours. Here in comparison: black and white.

Three typical problems with acoustically transparent fabrics

Typically, problems with the opacity of acoustically transparent covering fabrics occur when there’s a strong contrast between a speaker cloth in a light colour and rather dark objects behind it, when there’s light from behind, and when a source of strong incident light is pointed directly at the surface of the Acoustic Cloth.

 

Decrease contrast, increase distance

The most important measure to prevent translucency is to keep the contrast between the covering fabric and the objects behind it as low as possible. It is worthwhile, for instance, to varnish the cover frames and fronts of speaker cabinets and sound absorbers, in matt white if they are to be covered with white acoustics.

In addition, a larger distance between the background and the Acoustic Cloth helps prevent translucency. If, however, the speakers installed in a white housing have pitch black diaphragms, these will nevertheless remain visible under most lighting conditions. In some cases, this may even be desired since the effect can also be very elegant depending on taste and design. A similar transparency effect may occur with absorbers: If grey absorber material (think Basotect®) is covered with a piece of white Acoustic Cloth, the surface will often not appear in pure white, but rather in light grey.

Contrast of black and white with speaker cloth

The two pieces of speaker fabric illustrate the intensive contrast of black and white. However, the contrast between black and yellow is even stronger.

Contrast of black and yellow with Acoustic Cloth from Akustikstoff.com

The strongest contrast: black and yellow – in this case illustrated with two pieces of Acoustic Cloth from Akustikstoff.com

By the way, the contrast between black and yellow is even stronger – hence the colour combination of yellow and black for safety markings.

 

Avoid translucency from behind

A certain degree of optical transparency remains unavoidable if acoustically transparent fabric is exposed to backlight: Similar as with a curtain, the contours – or even more – of objects placed behind a piece of Acoustic Cloth will become recognizable if light is permeating the fabric directly from behind. This problem occurs mainly with AV furniture such as soundboards, soundbars, and lowboards. To avoid this “curtain effect”, place your AV furniture cleverly to prevent daylight from shining through and don’t put any artificial light sources behind the furniture.

 

Strong incident light leads to transparency

Strong, bundled light that is directed right at the front on the speaker fabric can also lead to transparency effects: The light penetrates the Acoustic Cloth, is reflected by the objects behind the cloth in the opposite direction, permeates the fabric again and this way leads to a certain degree of transparency. Such effects can be prevented by not pointing any light source directly at the fabric, rather using diffuse light, and ensuring a lateral light incident.

 

Heavy stretching makes speaker cloth increasingly less opaque.

The “curtain effect”: The higher the tension under which the elastic speaker fabric was mounted, the more transparent the speaker cloth becomes. The photo shows a piece of heavily stretched Acoustic Cloth with bright sunlight from behind.

Mind the tension                

The tension that is applied when processing our acoustic fabric is has a considerable influence on its optical transparency: The more intense the elastic fabric is stretched, the wider the meshes become. While heavily stretching a meshed fabric may improve its acoustical transparency (you won’t really need to do this with Akustikstoff.com Acoustic Cloth, as the utmost sound transparency was our primary design objective), it also changes the opacity of the material. This can lead to the so-called “curtain effect”: especially in the case of backlight, the fabric becomes progressively less opaque with growing tension. In such a case, it is necessary to experiment somewhat before final assembly.

 

Use two layers?

Depending on the application, it may be possible to use two layers of Acoustic Cloth to improve the opacity of the speaker fabric. The acoustic losses, an additional reduction by approx. 1-2 dB at approx. 8-9 kHz, are well within the acceptable range. Even if you use two layers of our Acoustic Cloth, acoustic transparency remains distinctly higher than that of other single-layer materials*. However, it is necessary to work very carefully in order to avoid the dreaded moiré patterns that the fine structures of the fabric may cause when they’re spatially overlapped. To a certain extent, this can be avoided by using the more structured surface of the fabric as the outer side at the front and the second layer with the slightly smoother side outwards. Then twist the two layers of fabric against each other until the moiré effect disappears. Again, some experimenting prior to the final fixation of the speaker fabric will ensure an optimal result.

*Schmid, Johannes: “Messungen zur akustischen Durchlässigkeit verschiedener Textilien“. Jade Hochschule University, Oldenburg, Germany, September 2015

Server Migration

akustikstoff-server-umzugTo keep our online shop for acoustic cloth as fast and comfortable as possible, we will migrate our content to a new server on Tuesday, 09. May 2017. Shop, blog, and email may be down between 10.30 a.m. and 11.30 a.m. In urgent cases, please give us a phone call. We apologise for any inconvenience.

Wall Unit With Value Added

Mit Metal-Line-Akustikstoff von Akustikstoff.com zum Phonomöbel aufgewerteter SchrankKurt Büchler used our acoustically transparent Metal Line Speaker Cloth with its elegant metallic shine for a pretty smart DIY solution to turn his living room cabinet into a highly attractive phono wall unit.

The speakers are nicely hidden behind the silver speaker fabric, the cabinet appears much more elegant and has turned into a piece of true phono furniture that suits the room well and provides value added.

Musikmesse 2017 – Review

akustikstoff-musikmesse2For the first time ever, Akustikstoff.com took part in the Frankfurt Musikmesse.  Together with the studio builder Professional Media Solutions, we had a share of the joint stand provided by  ES Pro Audio, and we presented our acoustic fabrics to international trade and industry professionals. We introduced six new colours and talked to numerous studio builders, acoustic experts, speaker and equipment manufacturers, stage builders, and, of course, musicians.

The response was consistently positive and encouraging. It confirmed that our range of acoustically transparent fabrics is truly unparalleled worldwide. Professionals were especially impressed by the remarkable properties of our Acoustic Cloth 2.0, which is water-repellent , stain-resistant, and flame-retardant.  Our newly developed PA-Type Acoustic Cloth also attracted great attention – as well as Acoustic Cloth Custom, the custom-dyed speaker fabric that is available in all Pantone™ textile colours starting at as little as one single roll.

Here’s a couple of impressions from the busy days in Frankfurt:

Akustikstoff.com auf der Musikmesse 2017

Akustikstoff.com @ Musikmesse 2017 – Stand construction on Tuesday evening. Will everything be ready in time?

Akustikstoff.com @ Musikmesse 2027 – Stand construction: metres of acoustic fabric still need to be stapled to the wall coverings

Akustikstoff.com @ Musikmesse 2027 – Stand construction: metres of acoustic fabric still need to be stapled to the booth wall coverings

Akustikstoff @ Musikmesse 2017 – Stand construction.

Akustikstoff @ Musikmesse 2017 – Stand construction. Later in the evening, things are slowly taking shape, and Steve from Professional Media Solutions is taking some photos.

Akustikstoff @ Musikmesse 2017 – During stand construction we suddenly realise that we did not have a proper sign. In a cloak-and-dagger operation, we have it designed and made at our premises on Tuesday evening …

Akustikstoff @ Musikmesse 2017 – During stand construction we suddenly realise that we did not have a proper sign. In a cloak-and-dagger operation, we have it designed and made at our premises on Tuesday evening …

Akustikstoff @ Musikmesse 2027 – Production of the signs for our booth using our laser

Akustikstoff @ Musikmesse 2027 – Production of the signs for our booth using our laser

Akustikstoff @ Musikmesse 2017 – The signs fresh from the laser

Akustikstoff @ Musikmesse 2017 – The signs fresh from the laser

Akustikstoff.com @ Musikmesse 2017 - The sign, finally mounted at the fair stand

Akustikstoff.com @ Musikmesse 2017 – The sign, finally mounted at the fair stand

Akustikstoff.com @ Musikmesse 2017 – Outside view of the fair booth

Akustikstoff.com @ Musikmesse 2017 – Outside view of the fair booth

Akustikstoff.com @ Musikmesse 2017 – Our acoustic fabrics on display

Akustikstoff.com @ Musikmesse 2017 – Our acoustic fabrics on display

Akustikstoff.com @ Musikmesse 2017 – Great colours on display

Akustikstoff.com @ Musikmesse 2017 – Great colours on display

Akustikstoff.com @ Musikmesse 2017 – Nicely looking absorbers fitted with our speaker fabric

Akustikstoff.com @ Musikmesse 2017 – Nicely looking absorbers fitted with our speaker fabric

Akustikstoff.com @ Musikmesse 2017 – Absorber wall equipped with acoustic cloth

Akustikstoff.com @ Musikmesse 2017 – Absorber wall equipped with acoustic cloth

Akustikstoff.com @ Musikmesse 2017 – Our stand host Erich Strich playing a spontaneous guitar solo. Impressive!

Akustikstoff.com @ Musikmesse 2017 – Our stand host Erich Strich playing a spontaneous guitar solo. Impressive!

Carlos Juan @ Akustikstoff.com's fair stand dat Musikmesse 2017

Akustikstoff.com @ Musikmesse 2017 – Visit from the master himself: Our friend Carlos Juan, the brain behind the famous acoustic guitar pickups and amps, which are used by Eric Clapton, Mark Knopfler, John McLaughlin, Pat Metheny, Carlos Santana, John Fogerty, George Benson … (the list goes on and on).

Akustikstoff.com @ Musikmesse 2017 – Ryan from Mäag Audio, Benny and Robert from Professional Media Solutions

Akustikstoff.com @ Musikmesse 2017 – Ryan from Mäag Audio, Benny and Robert from Professional Media Solutions

Akustikstoff.com @ Musikmesse 2017 – Cliff from Mäag Audio fighting with a power cord

Akustikstoff.com @ Musikmesse 2017 – Cliff from Mäag Audio fighting with a power cord

Akustikstoff.com @ Musikmesse 2017 – Taking souvenir photos at the end of the fair

Akustikstoff.com @ Musikmesse 2017 – Taking souvenir photos at the end of the fair

Akustikstoff.com @ Musikmesse 2027 – The guys from Mäag Audio, Professional Media Solutions, and Akustikstoff.com

Akustikstoff.com @ Musikmesse 2027 – The guys from Mäag Audio, Professional Media Solutions, and Akustikstoff.com

Akustikstoff.com at Musikmesse 2017

musikmesse2017Visit us at Musikmesse 2017 in Frankfurt, Germany, on 4 – 8 April.

You’ll find us in hall 9 on level 0 in the Professional Media Solutions section of the Erwin Strich ES-ProAudio joint stand F40.

Musikmesse provides an ideal opportunity for a first-hand impression of our acoustic fabrics in all available colours and variants. Professional Media Solutions will also display several demonstrative application examples equipped with our speaker cloth.

Why not drop by at our stand, discover numerous applications of our speaker fabrics in a professional sound studio environment, and receive a complete sample swatch with all new colours that will be available just in time for the fair?

We are looking forward to meeting you in hall 9.0 at stand F40 and to a stimulating conversation!

Add a Touch of Individual Colour!

akustikstoff-custom-as-colourful-as-natureSpring has come and is getting us all in the mood for fresh and vibrant colours. We’ve drawn on the colour explosion around us to come up with something as diverse as a flowerbed: Acoustic Cloth Custom, the acoustic fabric dyed in the colour of your choice. 

Forget about colour limitations when you’re looking for a quality acoustically transparent fabric for speaker grilles as well as for AV furniture and wall panelling in sound studios, showrooms, and exhibition booths! Simply have the fabric dyed in the colour your design concept requires.

Our Acoustic Cloth Custom meets the needs of any studio designer, exhibition stand builder, and interior designer: The fabric makes it possible to design rooms and exhibition booths in the clients’ corporate colours without any compromise, because Acoustic Cloth Custom is dyed according to your colour specifications.

Acoustic Cloth Custom is the speaker fabric that perfectly suits your individual colour and design concept for all speakers, absorbers, diffusors, and acoustically transparent panels. Wherever an acoustic fabric of outstanding quality  is required, Acoustic Cloth Custom ensures a unique and harmonious appearance – with all the beneficial properties that characterise our products. When you choose Acoustic Cloth 2.0, the fabric is even stain-resistant, water-repellent, and flame-retardant.

All Pantone™ TC and TCX colours can be applied – making it possible to reproduce virtually any colour. And even better: Your individual colour is available from as little as a single roll of 46 metres. 

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