​The underframe and legs of the Ballerina Sweetspot needed to be designed in such a way that it was heightadjustable and fixable – so that once the correct height had been determined, the chair would stay at that level. Our inspiration came from another music area – namely drums or more specifically a drumchair. And here we found the ability to vary the height of the Ballerina Sweetspot by more than 15 cms and the possibility to lock it into place with a locking-nut. So simple and effective a construction.

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We wanted the legs to be made out of the same aluminium as the other details of the chair, to create a consistent high-end look. Furthermore, aluminium is a great metal used in many hifi-products as a way to minimize vibrations.

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From the original design, we had initially worked with the premise of very, very light and thin legs – somewhat resembling the skinny legs of a ballet dancer and the “tip toing” of feet. From a weight and balance point of view of the final design, this was not feasible – and discussing with some owners of high-end equipment, we quickly realized that there was an opportunity to design the legs for further “isolation” from the floor.

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So instead, the legs were cut out of thick plates of high-grade aluminium, which means that the Ballerina Sweetspot can be prepared for the clients by way of a threading (1/4 inch, M4, M6 etc), or an indent/dimple at the tip of each foot to place specific solutions to minimize vibrations from the floor such as Stillpoints, Cerapucs or BDR cones.

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One first version of the legs were made where the indirect diameter from “foot” to opposing “foot” was 58 cms. This kept the frame and legs inside the diameter of the shell with about 2 cms. But everyone involved felt that this made the legs seem slightly “smallish” in relation to the upper body of the chair thus reducing the overall impression of the chair. So we made another version where the footprint was increased to approx 64 cms in diameter. Furthermore we also lowered the point of where we bent the legs to the feet. And it was perfect.

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Now the Ballerina Sweetspot both floated and felt stable to the ground. It balanced the curves of the design, the throne-like size of the chair together with the lightness of the shell and airiness of the legs and frame. How could we succeed in keeping that intact, when we also needed to integrate a head rest into a shell that was only 5 mms thick?