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DALI OPTICON 6 MK2
The internal volume of the floorstanding OPTICON 6 MK2 achieves a significant low frequency extension and bass volume level. It combines that bass performance with brilliant, midrange clarity and the sparkling high frequencies that are characteristic of the DALI hybrid tweeter.
The slim, floor-standing OPTICON 6 MK2 is the entry point in the OPTICON MK2 series for the renowned DALI hybrid soft dome and ribbon tweeter.
The OPTICON 6 MK2 offers a level of performance unavailable from any other OPTICON model. It combines immense low frequency bandwidth, volume potential and dynamic accuracy with the extraordinary detail and clarity that arises from the use of a dedicated midrange driver. High frequencies from the hybrid tweeter are explicitly detailed and informative yet simultaneously smooth and endlessly listenable.
The OPTICON 6 MK2 offers an extended low frequency profile that suits installation in large listening spaces with more distant room boundaries.
The manufacture of the OPTICON MK2 remains fully Danish - as with the MK1 series. Built at our factory in Denmark; from components produced in-house or sourced from the best specialist manufacturers locally and further afield.
As a reflex loaded speaker, the OPTICON 6 MK2 employs the otherwise unused acoustic output from the rear of its bass driver to extend low frequency bandwidth and increase low frequency power handling. We revisited the port tuning to ensure that the subjective bass performance was absolutely optimised for its likely installation application.
With Dual Flare technique, the MK2 brings port design into the realm of aerodynamics with exit and entry flares carefully designed to minimise turbulence at the airflow rate expected from the port diameter and tuning frequency.
Dual Flare enables the reflex ports to remain laminar and work effectively to reinforce low frequency performance to a significantly higher volume level than would otherwise be the case.
The OPTICON 6 MK2 driver magnet system consists of a large ferrite ring magnet surrounding a pole piece manufactured entirely of the unique DALI SMC material. The pole piece and the ferrite magnet are secured between soft iron front and back plates to create the appropriate magnetic field for the voice-coil.
DALI SMC (Soft Magnetic Compound) is a coated magnet granular material that can be formed to almost any desired shape and has many advantages used in driver magnet systems. SMC’s unusual combination of very high magnetic permeability and very low electrical conductivity is exactly what is required for driver magnet systems and results in a significant reduction of electro-acoustic distortion.
SMC works primarily by minimising eddy currents in the magnet system pole piece, which reduces distortion. SMC also improves flux linearity within the magnet system - reducing magnetic hysteresis. All of these SMC benefits together produce a significant subjective reduction of low-level detail masking and colouration.
The new unique light-weight 29 mm soft dome tweeter is derived from CALLISTO C and offers significant advances over the tweeters used in the MK1 series. The relatively small increase in diameter over the previous 28 mm tweeter results in a significant increase in dome radiating area. This means lower distortion, higher power handling, and an ability to operate at lower frequencies.
The use of the same 29 mm soft dome tweeter across all six OPTICON MK2 models results in consistency of tonal character and provides consistency of dispersion characteristics. The MK2 soft dome tweeter enables crossover frequencies as low as 2kHz to be safely employed with no risk of distortion or power handling limitations.
The OPTICON 6 MK2 employs a new hybrid tweeter design that marries the 29 mm soft dome tweeter with a custom 17 x 45 mm ribbon. Both mounted on a cast aluminium faceplate, which incorporates dispersion control detailing.
The ribbon element begins to contribute from 10kHz upwards; just as the response of the soft dome element is beginning slowly to fall away and become more directional. The ribbon element both extends the system frequency response towards 30kHz and contributes to keep high frequency horizontal dispersion wider than would otherwise be the case.
The new hybrid tweeter offers the best of both worlds – the clarity, speed and dynamics of a dome tweeter, with the very high frequency detail and smooth finesse of a ribbon tweeter.
The placement of the hybrid tweeter just above the woofers is done firstly in order to position the high frequency drivers near typical seated ear height. Secondly to take advantage of the smoother low frequency room response that results from spaced bass drivers.
The two wood fibre 6½” drivers in the OPTICON 6 MK2 handles the low frequencies and the midrange - both build around DALI's patented SMC magnet motor system.
Every component of the drivers are carefully designed for its positive contribution towards ideal performance. The diaphragms are made from a mix of paper and wood fibre that ensures minimal break-up resonance and gives the diaphragms their distinctive DALI trademark colour. They are terminated by rubber surrounds chosen for their soft and very flexible mechanical properties that enable free movement with minimal low frequency damping.
The driver chassis for each driver is manufactured in die-cast aluminium that provides extremely high rigidity and low resonance along with minimal extraneous influence on the internal magnet system. The mechanical design of the chassis is specifically engineered to provide minimal impedance to airflow while at the same time enabling extremely tight mechanical bonding with the speaker enclosures.
The drivers were designed with a consistent focus on the DALI audio principles of low-loss, low distortion and low colouration. The ideal driver plays only what the amplifier requires, with nothing added and nothing subtracted, and at DALI we strive to design and manufacture drivers that approach the ideal as closely as possible.
The enclosure of the OPTICON 6 MK2 is designed to optimise rigidity and minimise panel resonance. The 25mm thick front baffle provides massively rigid foundations for the drivers. The floorstanding speaker employs extra internal bracing further to ensure rigidity and practically eliminate panel resonance.
The OPTICON 6 MK2 is supplied with cast aluminium foot components that can be fitted with either black chrome plated floor-spikes or, when installed on sensitive floor surfaces, vibration damping pads. Tools for attaching the foot castings and spikes are included.
The manufacturing of the OPTICON MK2 series has been retained firmly at the DALI factory in Denmark. Our in-house woodworking facility handles everything from cutting and routing the MDF panels to the driver and crossover installation. The final test and quality approval on each and every speaker is also handled on our own assembly lines.
|Frequency Range (+/-3 dB) [Hz]||49 - 30,000|
|Sensitivity (2,83 V/1 m) [dB]||88|
|Nominal Impedance [ohms]||4|
|Maximum SPL [dB]||110|
|Recommended Amplifier Power [W]||25 - 200|
|Crossover Frequency [Hz]||800 / 2,200 / 14,000|
|Crossover Principle||2½ + ½-way|
|Hybrid tweeter module, Super high freq. driver, Quantity||1 x 17 x 45 mm|
|Hybrid tweeter module, Super high freq. driver, Diaphragm type||Ribbon|
|Hybrid tweeter module, High frequency driver, Quantity||1 x 29 mm|
|Hybrid tweeter module, High frequency driver Diaphragm type||Soft Textile Dome|
|Midrange driver, Quantity||2 x 6 1/2"|
|Midrange driver, Diaphragm type||Wood Fibre Cone|
|Enclosure type||Bass Reflex|
|Bass Reflex Tuning Frequency [Hz]||43.5|
|Recommended Distance From Wall [cm]||20 - 100|
|Dimensions With Base (HxWxD) [mm]||1001 x 195 x 330|
|Accessories Included||Assembly Tools|