New Tweeter Design
The Duette Series-2’s tweeter performance is enhanced by the inclusion of a rear wave chamber, which is sourced from the Alexia’s Convergent Synergy Tweeter. The CST chamber effectively attenuates the spurious energy generated at the rear of the driver that would otherwise leak out of the acoustically translucent dome.
This aspect of tweeter design is largely ignored by other manufacturers, but is key to maintaining time coherence by nearly eliminating out-of-sync high-frequency diffraction originating behind the tweeter’s dome. Reducing these artifacts greatly lowers the noise floor, and results in much higher treble resolution. Details naturally emerge from a grainless, black background.
The Duette Series-2’s enclosure is the latest product of extensive laser vibrometer testing. Wilson’s engineers were able to perfect all aspects of the enclosure design using this sophisticated advance in materials testing. Enclosure-wall thickness has been increased in strategic locations. Internal bracing is more robust. The entire enclosure, including the internal braces, is constructed from Wilson’s proprietary X-material, an extremely well damped and ultra-rigid composite.
The choice was made to configure the Duette for vertical placement only, enabling the engineers to introduce time alignment into the now slanted front baffle. The front baffle, now built from midrange-enhancing S-material, is raked back 10 degrees, properly aligning the tweeter and the woofer in the time domain. The myriad benefits of correct time alignment include transient speed, harmonic beauty, and soundstage resolution.
If the Duette is destined for shelf placement, special, furniture friendly threaded spikes are installed into the bottom of the enclosure. These replace the Magnepods and spikes of the outgoing model. For f oor placement, the Duette is bolted to its new stand. By design, the ideal method of mechanical grounding and resonance control is implemented for each of these two modes.
Finally, an all-new grill geometry makes its debut on the Duette. Great attention was paid to the grill-frame shape in order to lessen acoustic interaction from diffraction.
New Crossover Design
The Duette Series-2 is configured solely for near-boundary placement, whether near a wall on its stand, or on a credenza or bookshelf. This has eliminated the need for two separate resistor and umbilical settings, which, in the original model, facilitated conventional placement out away from walls. The focus could be turned to perfecting the crossover for excellent time-alignment and linearity—for near-boundary installations. When placed near a boundary, the Duette Series-2 even outperforms so-called super-mini loudspeakers designed to be placed out in the room in a traditional audiophile configuration.