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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





Roksan Darius loudspeakers


 Originally designed to monitor the performance of the Xerxes record player, the principles learnt in its construction have been employed in other loudspeakers in the Roksan range.

Darius tackles the fundamental questions of what a loudspeaker is and what can be achieved from a stereo reproduction system.

A loudspeaker moves the air of the room with reference to some fixed point. With stereo, two fixed points are used. If the two reference points are in turn allowed to move, the intimate detail of the musicians performance is lost, the emotion reduced, and the picture or illusion of the sound stage is blurred and fore shortened. With a Darius loudspeaker system, the necessary steps are taken to ensure that the reference points are immutable.

 

The cabinet of the Darius is one inch thick and internally cross-braced to ensure rigidity, reducing the flexure of the panels. One of the braces has a dual function; it passes directly behind the bass driver and allows this unit to be clamped from both the front and back accurately fixing its position within the cabinet.

The cabinet is then located in an exoskeleton stand, that clamps the cabinet at eight carefully selected nodal points. The stand ensures that the Darius is rigidly held in position within the room. With the bass driver accurately located, the problem then becomes one of mounting the tweeter so that it is immune from the vibrations being produced by the bass unit.

 

The tweeter has its own dedicated mini-baffle which is suspended on four springs from the rest of the enclosure. This affords complete isolation from the rest of the cabinet. Vibrations from the bass driver cannot interfere with the tweeter's operation.

With both drive units now fixed, the reference points are well defined and the result is an exceptionally clear sound and realistic three dimensional sound stage.

The Darius loudspeaker system has the crossover external to the cabinets so that the system can be extended by adding Darius sub woofers and active amplification.

 


Cabinets are available in a wide choice of real wood; Black ash, walnut, teak, oak, rosewood and black piano lacquer finishes.

Dimensions

Darius :  470 x 265 x 405 mm

Stand ;  965 x 445 x 330 mm

Crossover :  280 x 275 x 60 mm

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