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Product Information

  Jubilee (MC)
  Ortofon > 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.

TECHNICAL DATA
Output voltage at 1000 Hz,
5cm/sec.
340 µV
Channel balance at 1 kHz < 1 dB
Channel separation at 1 kHz > 27 dB
Channel separation at 15 kHz > 20 dB
Frequency range 20 - 60,000 Hz
Frequency response 20 - 20,000 Hz + 1.5 / - 0 dB
FIM distortion at recommended
tracking force, DIN 45.542
< 1%
Tracking ability at 315Hz at
recommended tracking force
100 µm
Compliance, dynamic, lateral 16 µm/mN
Stylus type Nude Shibata
Stylus tip radius r/R 6/50 µm
Equivalent stylus tip mass 0.22 mg
Tracking force range 2.0 - 2.5 g (20-25 mN)
Tracking force, recommended 2.3 g (23 mN)
Tracking angle 20°
Internal impedance, DC resistance 5 Ohm
Recommended load impedance > 10 Ohm
Cartridge body material Stainless steel/aluminium
Cartridge colour Purple/Black
Cartridge weight 10.5 gram

Product Description (PDF)

Profile of Ortofon

Ortofon was founded in 1918 by two Danish engineers, Axel Petersen and Arnold Poulsen. These two pioneers had one very clear objective in mind - to put sound onto film, and with this, they established the Electrical Fonofilms Company A/S, which later on was renamed Ortofon A/S. A few years later, in the Palace Theatre, Copenhagen, they were able to present the first fully-synchronized sound films and in so doing, created a world sensation.

Ortofon was also the first company to produce an outdoor sound film recording. The founders took out several patents and issued licences to film companies the world over for their "System Petersen og Poulsen", which is even to this day the basis for film with optical sound.

Until the second world war, Ortofon's growth was based entirely on the sound film. However, during the war and immediately afterwards, production was re-organized to include record cutting and reproducing equipment. The first Moving Coil cutterhead was produced as early as 1945, and the Moving Coil principle was then further developed to enable production of, first, mono cartridges and, later, also stereo cartridges.

During this busy period of growth, equipment was also being developed for broadcasting networks and recording studios. It was not until later that the Company decided to specialize solely in the development and production of cartridges. Unique experience at both ends of the recording sequence results in unsurpassed performence from every Ortofon cartridge.

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