It’s all about the enclosure
Hugely complex but with benefits that are immediately audible, an Interport-Coupled Cavity cabinet renders clearly superior performance in the reproduction of low frequencies. The engineering challenges and complicated manufacturing requirements of such a design makes it rare in the world of affordable speakers, but Jones’ pursuit of a new value-to-performance benchmark demanded this no-compromise solution.
Each Adante cabinet is actually multiple enclosures in one. The concentric midrange/tweeter is isolated in its own space within the cabinet, and the woofer complement, comprising an active and passive driver, occupies a divided chamber vented internally with dual ports. In the case of the Center and Floorstanding models, two and three double chambers respectively isolate each woofer pair from the other. Instrumental to the design benefits of an Interport-Coupled Cavity is that the entire enclosure is not externally ported at all, because such external ports will produce noise and other distortion artifacts if the speaker is overdriven.
On the other hand, a coupled-cavity design means that the active driver remains invisible, mounted internally in its own rear box that vents bass energy through dual bass ports to a front box which encloses a larger passive radiator. The piston action of this front-firing passive driver delivers low-frequency information that is tight, tuneful, extended and with greater output capability than a traditional externally-ported enclosure. This Interport-Coupled Cavity cabinet enhances the linearity of the active bass transducer by reducing driver excursions.
Optimized cabinet volumes allow for a crossover network tuned to take advantage of such a design. An internally vented box, with another box in front housing a passive radiator—means that acoustically, the front box becomes a second-order acoustic low pass filter, eliminating the requirement for two orders of electrical network, further reducing driver distortion.
With so much buried inside, what does all this complicated engineering mean for your music? It means clean, distortion-free, natural, accurate, authoritative bass that defies the norm and challenges far more costly competitors.
Two amazing woofers that work together
Fundamental to Adante’s superior performance are two new woofers that deliver extraordinary low frequency performance far superior to less complex driver and cabinet solutions. Engineered specifically to work in concert with the elaborate Interport-Coupled Cavity cabinet design, the first woofer is a 6.5-inch active driver with wideband frequency response. It features an aluminum cone and cast basket assembly with a substantial magnet and voice coil. The aluminum cone is fast, stiff and low in distortion artifacts that otherwise compromise bass realism. Mounted inside the complex cabinet structure, it remains invisible to the eye but its presence is readily apparent to the ear.
Partnering with the active driver is a lightweight 8-inch passive radiator. Front-firing, it is mounted to the bonded-aluminum front baffle of the speaker cabinet and features a stiff aluminum diaphragm and cast basket assembly. Its light weight makes this passive radiator faster and less prone to distortion artifacts than active drivers of similar diameter, so it moves air more quickly, with minimal coloration.
Together, this active/passive combination can handle all the power it takes to deliver crushing low-frequency crescendos with the dynamic realism of a live performance. Each Adante model uses identical concentric midrange/tweeter and low-frequency drivers. The Stand Mount, Center Channel and Floorstanding models employ one, two and three active/passive woofer pairs respectively.
All-new concentric midrange/tweeter
ELAC’s proprietary concentric driver technology has been taken to new levels of performance with a brand-new design that delivers astounding point-source accuracy, linearity, power handling, speed and articulation on virtually all types of music. The large, 5.25-inch diameter midrange cone, made of pure aluminum for maximum rigidity with lowest coloration, features a revised profile and generous 2-inch voice coil that results in greater output level and higher sensitivity than smaller concentric designs. The larger 2-inch voice coil also provides more room for a newly-engineered tweeter to be situated in the center. This soft-dome design uses new fabric material and employs a wide surround that results in improved lower-treble output, lower resonant and crossover frequencies. Additionally, the whole concentric driver chassis is mechanically isolated from the other drivers and the Adante cabinet itself with anti-vibration mountings that eliminate the transmission of vibration throughout the loudspeaker.
Four binding posts for added options
Each Adante model is equipped with a dual set of binding posts. A supplied link allows use of a single pair of speaker cables and only two posts, while dual posts allow the option of bi-wiring with a single amplifier, or choosing bi-amplification with the use of two amplifiers, one for the concentric midrange/tweeter and the other for low-frequency drivers.
Rock-solid, dedicated support
Both the AS-61 Stand Mount monitor and AC-61 Center Channel speaker are offered with optional stands specifically designed by ELAC to complement not just their design, but to enhance their performance. Aluminum center columns are hollow and can be filled with media (from cat litter to lead shot) for additional mass. A steel top plate is predrilled to correspond to threaded inserts in the base of each speaker. The base plate of each stand is machined from solid, 4mm-thick steel for added stability. Custom-made, adjustable locking spikes are fitted at each corner. The AF-61 Floorstanding Speaker features a custom outrigger base plate in steel with four adjustable spikes.