Eminence Delta 15A Series Bass Speaker
DELTALITE® 2515The price fall of neodymium heralds one of the most significant developments in the loudspeaker designer’s quest for ever greater power density. Transducers that exploit this amazing lightweight magnetic material are now affordable to manufacture in volume. Indeed, we anticipate that neodymium may come to replace ferrite magnets in the majority of transducers. Eminence has explored many other avenues in the pursuit of power density, often taking a ‘bigger picture’ view of how whole systems are configured and used. Marrying this thinking and experience with neodymium has created a superior neodymium loudspeaker series: Eminence DeltaLite®. In one particular area Eminence has led the world: resisting and handling high thermal loads while maintaining high sensitivities. Eminence expertise in the discipline of heat resilience and dissipation tackles the one weakness of neodymium: its tendency to lose magnetic strength when subjected to high temperatures. Once a conventional neodymium transducer has suffered heat fatigue, it is permanently damaged. Eminence DeltaLite® transducers employ a heatsink with a center phasor (similar to the mighty Eminence Magnum® Series) that cools the motor structure and smoothes the speaker response. With high-grade Eminence voice coils, this lightweight transducer series is power rated at a substantial 300W. Finite element analysis has been conducted on the DeltaLite® motor structure to maximize motor strength yet maintain a symmetrical design for extremely low distortion. Compared with an equivalent ferrite magnet transducer in the Eminence range, a DeltaLite® is around half the weight and the price is similar. The DeltaLite® baskets and the performance characteristics have been developed to enable existing enclosure designs to be easily converted to DeltaLite®. Eminence DeltaLite® transducers are available in custom specifications.
Materials of Construction
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