At the top end of Danish brand, Raidho’s, range of loudspeakers is the new TD Series, which has just arrived in the UK.

New Raidho Ribbon Tweeter

At the heart of all Raidho speakers lie the company’s own driver designs. The new TD Series includes a brand new, upgraded version of the Raidho sealed ribbon tweeter. The new tweeter features an even more powerful magnet system and a new acoustically optimised rear chamber, both of which serve not only to increase sensitivity and resolution but lower distortion levels by a 35dB compared to the (already reference-standard) previous design.

Tantalum

The mid and bass drive units in the TD Series not only improve on the company’s unique C-Series Ceramix drivers, but also on its advanced D-Series Diamond units. ‘TD’ stands for Tantalum-Diamond. Tantalum is a rare metal and is extremely dense and hard, yet also very ductile, it conducts electricity and heat tremendously well.

Benno Baun Meldgaard

Raidho’s design team, led by Benno Baun Meldgaard, added a 1-micron layer of tantalum to the drivers’ ceramic layer, making the latter even harder, while also countering the brittle nature of ceramic. This greater resilience allows them to then bombard the membrane’s surface even more forcefully with the subsequent diamond layer, effectively adding more diamond and less carbon to the surface. The resulting five-layer sandwich membrane is therefore even stiffer than that of Raidho’s (already extremely stiff) diamond cones, while the new tantalum layer also adds a considerable amount of extra inner damping. In fact, the company says that this is now “the stiffest and best inner-damped cone in the world”. The tantalum layer also helps to efficiently conduct heat away from the voice coil.

Mid & Bass Units

Additionally, the mid and bass units of the TD1.2, 2.2, 3.2 and 3.8 models all feature a new patent-pending motor system with a magnet assembly that delivers quite staggering tesla levels, and which Raidho cites as “the strongest underhung motor design on the market”.

The TD Series has benefited from Meldgaard’s singular approach to speaker design, in which all of the basic elements of a loudspeaker have been effectively reconsidered, almost from first principles. The crossover has been re-engineered to ensure ruler-flat phase behavior, and Meldgaard’s instinctive touch has equally been applied to the internal architecture of the cabinet. He is a firm believer in mastering the natural properties of sound so that its energies and vibrations work for you and not against you.

All models in the TD Series are available in a choice of piano black, walnut burl veneer, or any colour to order. Distributed in the UK by Decent Audio.

TD1.2 2-way standmount £20,000

TD2.2 2.5-way compact floorstander £38,000

TD3.2 3-way floorstander £56,500

TD3.8 3-way floorstander £85,000

TD4.2 2.5-way floorstander £102,000

TD4.8 3-way floorstander P.O.A.

Prices shown are for black. Walnut Burr veneer and bespoke colours at extra cost.

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