Apertura Enigma mkII Floorstanding Speakers (Call/Email For Availability)

ENIGMA mkII is Apertura new 2 ways flagship model.

This new version, called mkII, is based on the same configuration as the original ENIGMA, with two 22cm woofers and a very big ribbon tweeter. All the other elements and the crossover have been redesigned in order to achieve the best performance ever.

The load has been optimized with a special care on mechanical and electromagnetic damping of every drivers.

DRIVE UNITS
Two 22cm mid woofers, with «Isotactic Matrix» cones – a new type of composite material (woven polypropylene). This cone material exhibits stiffness, lightness and good damping properties,
Long voice-coil on titanium former for a high linear excursion. A heavy copper ring on the pole piece together with a solid copper phase plug reduce distortions.
This custom design driver made by Seas in Norway for Apertura is widely modified in our facility (motor mechanical damping).
New generation ribbon tweeter that uses an aluminum/ polymer sandwich diaphragm for improved linearity.
The high frequency drive unit is a professional grade ribbon tweeter, one of the biggest currently available. Its emissive surface is four times the Armonia one.
A so high effective piston area allows to reduce the movements of the ribbon, thus distortion at low and high levels.
CROSSOVER
Proprietary «DRIM» structure with a triple attenuation slopes and phase control over the entire bandwidth.
A brand new crossover for this mkII version with two independent circuit boards for low-pass and High-pass sections.
Selection of very high end audio capacitors from Jantzen, Denmark.
Each set of drive units (tweeter and mid/woofer) are individually measured and crossover values adjusted according to these sets measurements.
Hand wiring on a 140 µm copper printed circuit board. Optimized crossover structure to avoid magnetic interference between components
Binding post: pure copper with gold plating
ENCLOSURE
This new model uses the Apertura very specific cabinet shape: two curved sides of different length and no parallel front and back panels.
The complex load is a mix between a Bass-Reflex and an acoustic line. The vent tube of large section is located beneath the speaker.
A massive metal base acts as a mechanical referential and helps reproduce with precision the most subtle details.
Laminar structure based on multiple thin layers pressure molded.
Such process creates breaking modes and limit propagation of vibrations.
Final thicknesses vary from 28 to 44 mm.
Internal multi-cavity framework to stiffen the structure and create very specific areas where damping materials can be applied
No less than 10 horizontal and vertical thick bracing panels make up the skeleton on which all panels are mounted on
Importance is given to damping treatment to cancel any standing waves. We are using 4 different types of dumping materials.
Mechanical grounding: a central cone positioned on the axis of the center of gravity improved vibrations transfer to the floor. It optimized the dispersal of structure-borne noises.
One standard finish available :
High Gloss: american walnut, rosewood, piano black, white cream