Description

DALI RUBICON LCR

An extraordinary, particularly versatile loudspeaker is the RUBICON LCR. This box, just 14 cm deep, was designed to be mounted on the wall, but can also be placed on a shelf or on top of a TV cabinet. Thus, the RUBICON LCR can be used not only as a sound converter for the stereo channels of a hi-fi system, but also as a front or surround speaker in home cinemas.

So that the RUBICON LCR, which can be used either vertically or horizontally, always sounds identical, its hybrid tweeter unit can be rotated by 90 degrees in just a few simple steps. This guarantees a uniform radiation of all middle and high frequencies.

In order not to impair the elegant design of the wall loudspeakers, but still ensure a voluminous and powerful bass reproduction, the DALI developers came up with a very unusual solution. Although the bass reflex ports are embedded in the back of the RUBICON LCR, the air is deflected from here via two stable metal plates to two narrow, almost invisible outlets on the sides of the housing. In this way, the bass reflex system ensures that the bass-midrange driver is powerfully supported whenever the LCR is set up.

RUBICON LCR SMC MAGNETIC SYSTEM

An undistorted, coloration-free and detailed music reproduction has always been part of the DALI specifications. With the "Linear Drive Magnet System" consisting of the powdered magnetic material SMC ("Soft Magnetic Compound"), it was possible to significantly improve the sound quality in the upper speaker segment.

Transferring this know-how to cheaper loudspeakers proved to be extremely difficult. The intention to make the best possible use of the positive effect of the SMC material and at the same time not to make the structure of the magnetic drive too complicated led to countless experiments. The result was an SMC pole piece covered with a copper cap and encased in a large ferrite magnet. In this way, the advantage of SMC could be optimally used without the effort and costs increasing too much.

The use of SMC brings many advantages, but above all the distortions in the magnetic drive caused by mechanical losses are reduced considerably. SMC's unique ability to combine high magnetic conductivity with very low electrical conductivity enabled us to develop an excellent speaker drive without the disadvantages that we had previously had to accept. The distortions and thus the discolorations in the sound reproduction could be significantly reduced.

RUBICON LCR HYBRID TWEETER

DALI's hybrid tweeter module combines a fabric dome with a ribbon tweeter and in this way delivers a transparent, detailed and spatial high-frequency reproduction like no other conventional tweeter technology.

The ribbon is a magnetostatic tweeter. Four bands of conductive material form the active membrane, which is controlled by a powerful magnetic field enclosing it. The transmission range of the ribbon extends from 14 to over 30 kHz. Below that, the dome tweeter, which starts at 2,5 kHz, takes over. The extreme bandwidth and the very even and horizontally wide radiation are important features of the typical DALI sound.

LOW-MIDDLE RANGE

Since the SMC magnetic drive developed by DALI produces almost no disruptive distortions, the other components should also be of a similarly good quality. The extremely light and at the same time extremely stable wood fiber cone membranes with their deliberately uneven surface structure come from the same company that also produces the EPICON membranes. The membrane can move very easily like a piston and possible surface resonances are reduced to a minimum. All in all, these measures ensure very detailed and almost coloration-free music playback, even at low volume.

The cone is encased in a soft, low-loss rubber surround, designed from the ground up and custom-made for the RUBICON drivers. The bead guarantees that the membrane can move easily and without loss of energy.

All components are fixed in an aluminum basket that allows maximum air movement around the cone and magnet system. The use of an electrically non-conductive aluminum basket again ensures that the magnetic field around the magnetic drive is not affected.

CASING

Housings made of medium-density fiberboard (MDF) form the solid basis for operating the chassis, which is screwed directly to the 25 mm thick baffle. In order to optimally fix the woofer and integrate it into the housing, the five screws are located exactly in the extensions of the speaker basket. The tweeter module, which can be rotated 90 degrees if necessary, is fixed with four screws to eliminate disruptive vibrations and resonances.

Additional information