The multipart module, consisting of a carrier, a partially textured cover and a number of fitting and retaining elements, weighs only 95 g without the speaker. One of the reasons for the low weight is the finely differentiated grid layout of the product which comprises over 2000 individual rhomboid structures on each side. This meant that our tool shop had to create moulds for the injection moulding process that had over 4000 of these rhombuses. This was a serious challenge for both our staff and the machines, but it resulted in a most pleasing effect on both the ears and the eyes.