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What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.



H.H. Scott '59





Ortofon MC 20 Super II cartridge

A Completely New Design  - Inside and Out

As the fourth generation of Ortofon's best selling Moving Coil cartridge ever, the MC 20 Super II has a tradition as well as a reputation to live up to. Very conscious of this, the Ortofon engineering team has carefully evaluated every detail and available technology, to create a cartridge which, will deline the standard of sound reproduction in its class.

 

Fritz Gyger Type 1 Stylus With Improved Geometry and Ultra Stable Imaging

The FG Type 1 stylus benefits from the latest technological advances within diamond cutting and polishing. It is now possible to produce a very slim profile which will track even the highest frequency groove information. This is particularly important for the innermost turns of the groove. At the same time, the FG Type 1 stylus is distinguished by a larger than normal footprint for reduced distortion and record wear.

The audible results are crystal clear - a convincing and natural reproduction with a very stable definition or width and depth in the musical perspective.

 

The Ortophase Concept Adds a New Dimension to Analogue Sound

The inherently phase linear characteristics of the FG Type 1 stylus are further emphasised by the proprietary Ortophase concept which was introduced in Ortofon's famous MC 2000 cartridge.

Statistically reliable listening tests and extensive laboratory studies have demonstrated the importance of phase linearity in the reproduction of high quality audio.

But it has taken Ortofon's experience and manufacturing technology to make cartridges phase linear. Since a cartridge is a bandwidth limited transducer, a ruler-flat frequency response will not produce phase linear characteristics. Ortofon's research has shown that a very carefully calculated shaping of the amplitude response will result in a linear phase response.

This is the reason why frequency charts for the MC 20 Super II , show a slightly rising level above 5 kHz. Normally, such a response would be interpreted as a result of uncontrolled resonances. In fact, the natural resonances are under full control, and every Ortofon Moving Coil cartridge has been tuned by hand to ensure that it precisely meets the specifications of the Ortophase concept.

 

Non-Resonant Aluminium Cartridge Housing Prevents Sonic Colouration

The sound of the MC 20 Super II also benefits from Ortofon's new aluminium cartridge housing.

Internally, the magnetic assembly is securely screwed and glued to the body, and the precision fit of the two anodised extrusions makes the entire housing acoustically inert.

The large, solid upper plate makes it easy to achieve a perfect mechanical coupling to any high quality shell.

 


Specifications:

Output Voltage:  0,2 mV (1 kHz, 5 cm/sec)

Channel Balance:  less than 1,0 dB

Channel Separation:  better than 25 dB

Frequency Response:  20 - 40,000 Hz +4 dB -1 dB

Compliance Dynamic:  16 µm/mN

Stylus:  FGT 2 type

Tracking Force:  1,6 - 2,0 g

Tracking Ability:  better than 90 µm

Recommended Load Impedance:  better than 100

Weight:  10 grams


 

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