Concerto D1 Reference

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[thanasis k.]

Απάντηση: Concerto D1 Reference

Concerto D1 Reference

Product Reviews
Please see the following reviews: Writer's Choice Award, Enjoy the Music.com.
While the vast majority of speaker designers utilize existing technologies, NSR researches and develops new ones. We are not followers of trends and gimmicks, but innovators in acoustic frontiers beyond the currently known or applied methods. NSR has developed and perfected the "Acoustic Projection Lens" and the physics that supports this acoustic phenomenon.
The "APL," although an outwardly simple device, is quite complex, and has taken nearly a quarter century to perfect. In its theoretical advent (circa 1978), the APL was rationalized as a sonic prism. Originally it was fabricated in an attempt to resolve the perplexing problem of spontaneous frequency emissions from the cone of a transducer, in order to eliminate entropy and correlate these masked emissions by recombining them with the direct wave front of the driver.

Many loudspeaker crossovers employ technologies such as Zobel impedance compensation networks and/or notch filtering. A Zobel network is an electrical compensation network added to a crossover design to assist with complex driver impedance compensation. Notch filters are band-rejection filters used to compensate for driver shortcomings by passing many frequencies unaltered, but attenuating those in a specific range to very low levels. Both are simply Band-Aids, and as such, are undesirable in a correctly designed crossover. NSR does not employ Zobel networks or notch filtering in its advanced crossover networks.
There are any number of reasons why these technologies are so widely employed in loudspeaker systems today. Primarily, when the driver, box, and the crossover design chosen simply don't work, these methods are employed to "fix" or "repair" problems that arose after the design. If a system is designed properly, and the proper combinations of circuitry utilized, these filters should not be required.