Ortofon Jubilee Low Output Moving Coil Cartridge

Introduction To The Jubilee
The Ortofon jubilee cartridge, was made especially for the celebration of Ortofon's 80th anniversary. For quit some time it has been Ortofon's goal to create an entirely new cartridge design - visually as well as in sonic performance - our aim is to bring you many hours of a new previously unparalleled listening experience while enjoying your precious record collection. How would it be possible to influence the most important part of this new concept - the sound - in such a way, that true lovers of analogue reproduction would find, that the Ortofon Sound - once again - had improved the listening experience to this outstanding medium. After many and serious investigations we came to the conclusion, that by utilizing high quality materials with the best Ortofon design elements throughout the years we would reach our goal. The response we received from test-listeners to the first prototypes of this new Ortofon concept was very positive and revealed the impression of a new dynamic, but well balanced sound image over the entire frequency range. It is our hope, that all our faithful customers will agree upon this statement and enjoy their precious collection of records even more when listening to the Ortofon MC Jubilee cartridge.

New Design Elements
The new appearace of the design is a result of a co-operation between professional industrial designers and the Ortofon Chief Engineer Per Windfeld. Were the most advanced technology and processing should have a very high priority. During the developing process it became more and more evident, that the requirements to both outside as well as inside parts became so demanding with respect to details and finish, that usual manufacturing procedures were insufficient. The only method that would meet our requirements, was found to be the so-called Metal Injection Moulding process (MIM). This process is based on very fine metal powders being mixed into a polymer and injected into a mould. After moulding the parts will pass heat treatment and sintering processes and the result is solid metal parts of either stainless steel to be used for the outer design or highly conductive iron for the magnetic circuit. Very low wall thicknes together with miniaturisation of the magnetic circuit made it possible to keep the cartridge weight as low as 10.5 grams. All parts on the Ortofon Jubilee model are pressed together to a almost solid unit, so no use of screws or glue was necessary. As mentioned, a new unique magnetic circuit was developed in order to concentrate magnetic fluxlines in the air gap with the smallest amount of leakage in the circuit. The solution was to place the damping system inside the Neodymium magnet itself. By doing so we gained a raise in output voltage of 35% compared to the MC Rohmann cartridge. The well known Ortofon WRD-damping system (Wide Range Damping) is also implemented in the MC Jubilee cartridge, controlling the high - and low frequency damping separately. The effective mass has been reduced in the new stylus/cantilever system by using a very thin Boron rod. This material is extremely stiff and even more lightweight compared to aluminium. Besides is the velocity of sound almost 3 times higher compared to that of aluminium. Combined with the nude high-polished Shibata diamond stylus at the end of the cantilever, we have developed one of the new elements responsible for the new sound. 6-nines 99.9999% pure silver is used for the coils on the armature whereby the DC resistance has been kept as low as 5 Ohm.


Ortofon Moving Coil Cartridges PDF

Ortofon Jubilee Technical Specifications


Ortofon Jubilee Brochure PDF


Ortofon Jubilee Cartridge
As Reviewed By Graham Abbott -POSITIVE FEEDBACK ONLINE - ISSUE 28


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