Carl J. Marchisotto, Accent Loudspeaker Technology’s President and Chief Engineer, has been designing audio equipment since 1973. Carl launched his career at Dahlquist, where he spent fifteen years as the Chief Designer and Vice President of Engineering. During his tenure at Dahlquist, Carl developed the DQ-8, DQ-12 and the flagship DQ-20 loudspeakers (still revered today), as well as the Dahlquist LP-1 crossover and the CM-1 preamplifier.
In 1991, Carl and Marilyn Marchisotto founded Acarian Systems, Ltd. (manufacturers of the acclaimed Alón line of loudspeakers). Acarian Systems debuted at the January 1992 Consumer Electronics Show in Las Vegas, where the widely acclaimed Alón IV had its first showing. Over the next thirteen years, Acarian developed a wide range of loudspeakers and cabling, including the Exotica Grand Reference System – considered by many to be the finest loudspeaker in the world.
In 2004, Carl and Marilyn formed Accent Speaker Technology Ltd. and created the Nola product line. Today, the company manufactures a complete line of loudspeakers – ranging from $1,900 bookshelf speakers to the $298,000 Grand Reference VI Gold System – along with custom cabling designed to enhance the performance of any loudspeaker.
‘Accent Loudspeaker Technology’ was founded with the belief that it could bring the live musical experience to a broader number of people than had been previously reached. Carl Marchisotto’s speaker designs have not only met this goal, but have been held in the highest regard by music lovers and reviewers alike.
They have collected innumerable awards and won the praise of critics all over the globe.
Several technologies set Nola’s loudspeakers apart from the competition. They include:
Nola’s open baffle loudspeakers feature midranges and tweeters that operate in dipole mode, using a cone driver without an enclosure. This system eliminates four major resonant problems that hamper all midrange enclosure systems and cause the sound to take on a mechanical coloration:
1. Enclosure panel resonance
2. Enclosure air column resonance, due to air trapped in the enclosure — resulting in standing waves
3. Delayed resonance, due to sound retransmitted through the cone
4. Driver resonance, due to stiffness of trapped air causing the driver to resonate close to its operating band
Nola open baffle loudspeakers are not hampered by any of the above. To operate in this environment, special drivers were developed that employ
a cobalt magnet mounted on a cast frame, driving a low mass trilaminate cone. These drivers combine lightning-fast response, very low distortion and inaudible coloration levels in a single design. Special baffle structures were created for the mid/high frequency range that are sculpted to reduce diffraction to minimal levels. The result is an open, natural and clear sound with excellent depth and soundstage performance.
Many Nola loudspeakers feature premium cobalt (alnico) magnets. The powerful field generated by these magnets contributes to the natural reproduction of harmonic textures.
MULTI-BOARD HAND-WIRED CROSSOVERS
Nola loudspeakers feature hand-wired crossovers without fuses or current-limiting devices, which would compromise signal integrity. The speakers use up to seven separate hand-wired boards, oriented in space so that they do not interfere with each other.
Nola’s reference-model loudspeakers use an external crossover module for improved performance. The external crossover prevents colorations due to interactions between the driver magnets and crossover components, and also prevents mechanical vibration of the crossover components for a smoother, more open sound. The newly developed UnisonTM crossover system allows all these crossover boards and drivers to blend seamlessly to provide “one coherent sound.”