The Ortofon MC Windfeld phono cartridge

The MC Windfeld was developed in 2008 using state-of-the-art technology.

This highly advanced design, which is the world’s most hi-tech analogue cartridge, may be seen as a tribute to Ortofon’s departed engineer Per Windfeld, who had for more than 30 years been a feature of the high-end culture as the head of development behind amazing cartridges such as the Ortofon MC 20 Super, Concorde, MC Rohmann, MC Jubilee, Kontrapunkt Series.

MC Windfeld is designed by a team headed by Mr. Windfeld's successor, Leif Johannsen, the Ortofon's Chief Officer of Acoustics and Technology. The cartridge bears Mr. Windfeld's name - his initials "PW" are inscribed in gold on the cartridge's side.

The Windfeld retains many of Per Windfeld's earlier design innovations, including:

Wide Range Damping (WRD) system

The ultra-fine polished version of extremely low      mass, large-vertical-contact Replicant 100 diamond, capable to extract      musical information from the grooves with a greater degree of accuracy      than any other kind of needle

And a strong neodymium magnet system with a Field Stabilizing Element (FSE) located within the magnet system.

The MC Windfeld can ideally be combined with the Ortofon TA-210 and TA-110 tonearms and the ST-80 SE MC transformer.

The Ortofon MC Windfeld Technical data

Output voltage at 1000 Hz, 5cm/sec.  -  0.3 mV
Channel balance at 1 kHz   - < 0.2 dB
Channel separation at 1 kHz  -  > 28 dB
Channel separation at 15 kHz  -  > 22 dB
Frequency range at - 3dB  -  10-80 kHz
Frequency response  -  20-20 kHz + / - 1 dB
Tracking ability at 315Hz at recommended tracking force  -  100 µm
Compliance, dynamic, lateral  -  16 µm/mN
Stylus type  -  Nude Ortofon Replicant 100, special polished
Stylus tip radius -   r/R 5/100 µm

Tracking force range  -  2.3-2.8 g (23-28 mN)
Tracking force, recommended  -  2.6 g (26 mN)
Tracking angle  -  23°
Internal impedance, DC resistance  -  4 Ohm
Recommended load impedance  -  > 10 Ohm
Cartridge body material  -  Stainless steel/special alloy
Cartridge colour  -  Black/Black
Cartridge weight  -  13 gram

Ortofon Replicant 100 - the finest diamond in the world

The MC Windfeld features an ultra-fine and extra polished version of the unique Ortofon Replicant 100 stylus. Replicant 100 is also used in the MC A90, Xpression, MC Anna and MC Cadenza Bronze cartridges, providing more responsive and transparent sound reproduction.

Another precondition for linear reproduction with a wide frequency range and optimal tracking performance is a diamond, the shape of which is as close as possible to the original cutting needle. To achieve this, the Ortofon MC Windfeld uses an ultra-fine polished version of the unique Ortofon Replicant Stylus 100.

This diamond, which is already known from products such as the MC 3000 Mk II and MC 5000, is incredibly small and light, but has an extraordinarily large vertical contact surface despite its minimal radius of rounding. Correctly fitted at a vertical angle of 23 degrees, an Ortofon Replicant Stylus 100 will read the musical information in the grooves of a record with a greater degree of accuracy than any other kind of needle.

Extremely high end materials benefit new coil technology

Zero-loss transmission of the diamond’s movements to the expensive Aucurum coils of gold-plated, 99.999999% oxygen-free, monocrystalline copper is achieved in the Ortofon MC Windfeld via a cantilever in boron (just as in the MC Jubilee), which combines a low moving mass with a very high degree of mechanical rigidity.

A special design of armature makes it possible to position the coil turns extremely precisely in several layers. This technology achieves higher channel separation, lower distortion and better channel balance.

A low output impedance of 4 ohm and a medium output voltage of 0.3 mV makes the Ortofon MC Windfeld a perfect partner for most step-up transformers, e.g. Ortofon ST-80 SE transformer, as well as active MC pre-amps.  
Combining some of Mr. Windfeld's innovations

Neodymium magnet with Field Stabilising Element

The magnet system combines Per Windfeld’s designs for the much-admired Kontrapunkt series and the MC Jubilee. It is based on an extremely strong, compact neodymium magnet, which makes the generator system both compact and through its minimal dimensions also lighter.

A so-called Field Stabilising Element (FSE), a small cylinder of conductive material strategically placed inside the magnet system, guarantees that the force field remains stable regardless of the movement of the armature. FSE improves the channel separation, while at the same time minimising dynamic distortion and intermodulation. The result: fantastic dynamics and even more elbow room between the musicians.

You simply experience more drama and greater breadth, height and depth in the sound scenario between the high-end system’s loudspeakers!

Wide Range Damping system

One of the important components is the WRD system (Wide Range Damping), in which a small, heavy disc of exotic metal is clamped between two rubber absorbers with different properties. This makes sure that the tracking performance is maintained simultaneously with the perfect damping in the whole frequency range, with the effect that distortion and resonance are avoided.

The WRD system, which was originally introduced in the MC 20 Mk II in 1979 and was also used in the MC Jubilee and many of Ortofon’s other top-class cartridges, is one contributory reason why the MC Windfeld, while achieving the most linear frequency response and the highest upper frequency limit ever, at the same time tracks a fantastic 100 µm at a vertical tracking force of 2.6 grams.