Eminence Delta 15A Series Bass Speaker Woofers

Eminence Delta 15A Series Bass Speaker


  • $169.95


Price Match


The 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

  • Kapton coil former for increased rigidity and thermal protection
  • Polyamide-imide coated edgewound aluminum voice coil with BeCu lead-outs for durability, increased sensitivity, and power handling
  • Neodymium magnet for substantial weight reduction
  • Lightweight die-cast aluminum basket for rigidity
  • Paper cone
  • Rolled cloth cone edge with deep corrugations for extended Xmax
  • Aluminum phasor/heatsink to transfer heat from the motor structure and smooth response
  • Screened cloth dust cap for enhanced cooling and protection


  • Nominal Basket Diameter: 15", 381mm
  • Impedance: 8 ohms
  • Power Rating: 300Wrms
  • Resonance: 41Hz
  • Usable Frequency Range: 40Hz - 3.5kHz
  • Sensitivity: 96.8 db ,1Watt/1Metre
  • Magnet Weight: 7oz
  • Gap Height: 0.275", 6.99mm
  • Voice Coil Diameter: 2.5", 63.5mm

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