The Concerto Lumaca

The Concerto Lumaca is our highest-performing, reference level loudspeaker.

The invention of the Concerto speaker broke new ground in loudspeaker performance. It's design offered incredible efficiency and a wide dynamic range with virtually no audible distortion. After the success of the Concerto I wanted to take the speakers' performance to an even higher level. The goal was to entirely eradicate any unwanted vibrations returning back into the speaker driver and to have the sound 'wrap itself' around the speaker with no unwanted reflections or cancellations.  In order to accomplish this I set out to design a cabinet that had absolutely no flat spots anywhere and be completely cylindrical.  It was an interesting idea but not an easy task to accomplish.


Researching designs to produce the cabinet took over a two year period.  If the cabinet was to be made out of plastic, MDF, or other composite material, shaping and molding would not be so difficult.  However when using pure hardwood and birch plywood, it's next to impossible.  Measures must be taken along the way to ensure each piece is cut to an incredibly tight tolerance.  It takes many layers of birch plywood along with thousands of tool-paths to build the seamless 145" Tractrix Horn. The result is a delivery of astonishingly pure, natural and unadulterated presentation of music.


There are various options for speaker drivers. We recommend the highly regarded Voxativ AC-2.6 driver with its twin-coned, lightweight paper diaphragm and neodymium magnet. This driver is chosen for its' speed and articulation. It produces a very wide dynamic range, and a natural and well-balanced stage, with flat extension down to 18 Hz, and up to 22 kHz. Because of the large 36" x 36" horn/throat, the bass develops easily with no "holes" that a crossover to a sub-woofer would introduce. With its flat response to the very bottom there is no need for a sub-woofer.  At a measured output of 107 dB @ 1W/1M, a low-powered tube amp will give superb results, from a whisper to a rock concert.  We now offer as an option the AER bd- 3 driver for even more detail and realism.



Dimensions:  94H x 30" W x 30" D

Weight:  85 lbs Each

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