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Dynaudio Special Forty loudspeakers for special music fans

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Dale Davies ▼ | September 29, 2017
Dynaudio Special Forty
Audio   The most faithful sound reproduction

The Special Forty is classic Dynaudio: all the craftsmanship, attention to detail and total love of authentic sound you’ve come to expect.

Dynaudio Special FortyThe Special Forty uses Dynaudio's proprietary MSP (Magnesium Silicate Polymer) material for its main driver. MSP delivers precisely the right combination of rigidity, damping and stability for the most faithful sound reproduction. And, unlike other cone materials, it doesn’t change over time so your Special Forty speakers will still be singing just as sweetly come our next anniversary. The cone itself uses a painstakingly developed symmetrical excursion for even better midrange performance.

Dynaudio Special FortyBehind it sits Dynaudio's asymmetrical spider – our passive harmonic rectifier. It minimises upper harmonics to further tighten the performance and make it possible not only to pick out individual parts in a piece of music, but even individual instruments in an orchestra. And, like all Dynaudio's other MSP cones, it’s a one-piece design. This gives it an incredibly solid connection to the voice-coil, as well as stabilising its form – which is crucial when you decide to turn it up to 11.

Dynaudio Special FortyIt all sits in our special AirFlow Basket – the bit that holds the whole driver motor securely in place in the cabinet. The company asked their engineers to reduce internal reflections and increase air movement without compromising the basket’s stiffness or stability, and this genius design is what they came up with. The new Esotar Forty tweeter takes air-movement to another level. It moves the air in typically sweet fashion in front of the DSR (Dynaudio Secret Recipe) precision-coated soft-dome.

Dynaudio Special FortyThe new pressure conduit is a shaped vent in the back of the hybrid magnet system that allows more space in the rear chamber. That space packs in more damping material and reduces back-pressure, while the shape itself optimises airflow coming backwards from the rear of the dome. Then there’s the outlet; the aero-coupled pressure-release system. It sits underneath the voice-coil and reduces unwanted pressure build-up that could affect its movement. Stopping those pockets of air from forming reduces resonance and less resonance equals even greater potential for detail.

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