The following is a press release issued by Raidho.
February 21, 2019 - The new Raidho Tantalum-Diamond (TD) cone: TD-4.8
Even though our Diamond cone drivers, are already groundbreaking in their technology and performance, we still don’t stop there - improving our technology is simply a part of the Raidho DNA.
With the new Tantalum technology, we have managed to better our already class leading diamond cones. By adding Tantalum to our ceramic cones, before the diamond layer, we have created a 5 layer sandwich cone, which is even stiffer than our already extremely stiff diamond cones, while at the same time adding huge amounts of inner damping.
This means that these cones move completely like a piston without any break-up nodes way above the human hearing limit. (Actually even higher than most high quality tweeters)
What we gain from this is lower levels of distortion than any other drive unit on the market, lightning fast transient response, matching our world-famous ribbon tweeters perfectly.
The extremely low levels of distortion, also ensures a very musical and organic reproduction – bringing you closer to the music than you thought possible.
HOW IT’S DONE:
Tantalum is an amazing metal. It conducts electricity and heat extremely well. It is extremely hard, but at the same time both dense and ductile, which is why it is also being used in special ammunition, able to penetrate 1m (3ft.) of solid concrete!
In case of our cones, we ad a micron layer of Tantalum, on top of the ceramic layer making it even harder, while at the same time removing the brittle nature of ceramic.
This also means that we can bombard the surface even harder with our Diamond layer, effectively adding more diamond and less carbon on the surface.
Besides resulting in the most stiff and best inner-damped cone in the world, the Tantalum layer also very efficiently helps to conduct the generated heat from the voice coil away from it, lowering any voice coil relayed distortion as well as raising the powerhandling capabilities of the speaker system.
Tantalum is a strong, ductile metal discovered by the Swedish chemist Ekenberg in 1802. Atomic Nr. 73.
This rare metal has a high melting point at more than 3000° Celsius, it is immune to chemical attack at room temp, and is an excellent head conductor.
Tantalum is used to make components for chemical plants, nuclear power plants, airplanes and missiles.
A composite consisting of Tantalum carbide and graphite is one of the hardest material known and is used on the cutting edges of high-speed machine tools.
Topology 3 Way
Bass Loading Ported for impulse control. Port in rear
Drivers 1 x Raidho Sealed Tweeter; 2 x 100 mm Raidho Tantalum-Diamond drivers ; 6 x 115 mm Raidho Tantalum-Diamond drivers
Crossover Point 200 Hz & 3 kHz 2nd Order
Bandwidth 20 Hz 50 kHz
Sensitivity 90dB/W 2.83V/m
Nominal Impedance 5.5 Ohm
Power Requirement >50 W (Though we have seen excellent results with small tube amplifiers)
Finishes Piano Black, Walnut burl veneer or any colour to order
Dimensions 200 x 1790 x 630 (With feet 440 x 1790 x 615)
Weight 71 kg