Description

DALI OPTICON LCR MK2

The OPTICON LCR MK2 has a particularly flat housing optimized for wall mounting and is suitable for a wide range of applications. The speaker can be used in a home cinema system for the left, right and center channel in front, but also for the surround channels in the back. In addition, the OPTICON LCR MK2 cuts a fine figure as a conventional stereo loudspeaker or as a supplement to a TV set.

The mid-woofer with its 165 mm (6 1⁄2”) wood fiber cone and an SMC pole piece, the rotating hybrid tweeter module and the sophisticated bass reflex system that incorporates the wall complement each other to form a perfectly coordinated ensemble that does far more than you would expect from such a compact speaker. With airy highs, expressive mids and surprisingly deep basses, the OPTICON LCR MK2 is a wall speaker with full HiFi sound characteristics.

The OPTICON LCR MK2 is available in the housing versions matt white, black ash and tobacco oak.

SMC MAGNETIC SYSTEM

DALI SMC (Soft Magnetic Compound) is a coated magnetic granulate that can be molded into almost any desired shape and offers numerous advantages when used in loudspeaker magnet systems. SMC is characterized by a very unusual combination of very high magnetic permeability and very low electrical conductivity. These are exactly the desired properties for the magnets in our loudspeakers. They reduce electroacoustic distortions to a considerable degree.

The use of SMC reduces eddy currents in the pole piece of the magnet system caused by the movement of the voice coil around the pole piece. They create a secondary magnetic field that modulates the input signal and leads to increased harmonic distortion. In addition, SMC also improves flux linearity within the magnet system, reduces magnetic hysteresis, and minimizes voice coil inductance variations as a function of its position. All in all, the advantages of SMC mentioned lead to a significant reduction in discolouration and superimposition, especially at low listening levels.

HYBRID TWEETER

FABRIC CAP
The 29 mm fabric dome is a new development based on the CALLISTO series tweeter. The slightly larger diameter leads to a significant increase in the sound-emitting membrane area, which is associated with lower distortion, higher power handling and a frequency range that is extended downwards. The use of an identical tweeter dome in all six OPTICON MK2 models not only leads to a consistent sound character - it also enables a crossover topology that is similar in all models, which results in a uniform radiation behavior.

The new OPTICON MK2 fabric dome allows the crossover frequency to be reduced to 2 kHz without fear of distortion or limitations in the power handling. An extremely low-viscosity magnetic fluid ensures high resonance damping and higher power handling without impairing the impulse response speed of the particularly light, coated membrane.

HYBRID TWEETER
The newly designed hybrid tweeter of the OPTICON MK2 series combines a 29 mm fabric dome adapted from the CALLISTO loudspeaker series with a newly developed 17 × 45 mm ribbon. Both tweeters are mounted on a cast aluminum plate, which also ensures optimal horizontal radiation.

The hybrid tweeter is tuned in such a way that the ribbon emits all frequencies above 14 kHz - below that, the fabric dome intervenes in the musical events. The ribbon extends the frequency response of the overall system up to 30 kHz and at the same time improves the horizontal dispersion at the highest frequencies in a way that would otherwise not be possible. The new hybrid tweeter combines the best of both worlds: the clarity, speed and dynamics of a dome and the attention to detail and finesse of a ribbon tweeter

MIDDLE WOOFER

The OPTICON LCR MK2 works with a 165 mm (6 1/2″) mid-bass driver, which has DALI's patented SMC magnet system and the reddish shimmering wood fiber cone. This consists of a mixture of paper and wood fibres, which ensures minimal fracturing resonances and gives the membranes their unmistakable DALI trademark colour. A particularly flexible rubber surround allows free cone movement with minimal low-frequency damping.

The driver's extremely rigid and low-resonance basket is made of die-cast aluminum. It is designed in such a way that on the one hand it does not impede the air flow within the housing in any way and at the same time an extremely strong mechanical connection with the loudspeaker housing is ensured.

The magnet system of the OPTICON LCR MK2 consists of a large ferrite ring magnet surrounding a pole piece made entirely of the unique DALI SMC material. The pole piece and ferrite magnet are mounted between the soft iron front and back plates to create the appropriate magnetic field for the voice coil.

CASING

Each OPTICON MK2 cabinet has been optimized for maximum rigidity and minimum surface resonance. The 25 mm thick baffle of the OPTICON LCR MK2 offers the drivers mounted in it optimal, unshakable working conditions.

The loudspeakers of the OPTICON MK2 series are manufactured by DALI in Denmark. Our in-house wood processing facility covers all aspects of manufacturing; from cutting and milling the MDF case parts to surface finishing and assembling the case. The installation of the drivers and crossovers as well as the final quality check and approval for each individual loudspeaker are also carried out on our own production lines.

The wall speaker's reflex ports aren't dual-flare tubes, but they're no less carefully thought out. Placing it directly against the wall requires a completely different approach. Although the reflex openings are in the rear wall, they are designed in such a way that they do not radiate against the wall but along the wall. In this way, the surface of the wall becomes an integral part of the bass reflex system.

Additional information