Eminence Delta Pro 15 Cast Frame Speaker

Delta Pro 15 Cast Frame Speaker:
OVERVIEW:
It has often been said that Eminence professional loudspeakers are not expensive enough. A genuine American-built cast-frame high performance transducer must surely cost considerably more - after all, most other premium speakers do.
The fact is that nobody else in the world makes quantities like Eminence and nobody else can waste as little during the manufacturing process. Eminence 'Pro' models have always been a remarkably good value. Following a series of detail revisions, they are now an even better value.
The major cause of failure in a loudspeaker is thermal overload. Expansion of moving parts - even melting of parts - is terminal. Some time ago, Eminence approached DuPont about formulating a special type of Kapton™ that could efficiently deal with extreme heat conditions. Except for rare accidental overloads, this material all but eliminated voice coil failures.
Eminence has further developed manufacturing techniques with this material and investigated other problem areas in transducer motor structures. The combined effect of a number of seemingly small adjustments to production techniques, component materials and adhesives has yielded dramatic improvements in power handling.MADE IN THE USA:
The Eminence professional series represents a collection of the most widely used professional loudspeakers in the music industry. From indoor or outdoor concerts, to churches, night clubs, recording studios and arenas all over the world, Eminence has become well known for virtually all applications. Eminence earned this reputation from engineering and manufacturing transducers that incorporate the latest innovations in an affordable package. Why pay more for an over engineered product? Do what the professionals do: put Eminence Inside!

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• Impedance: 8 Ohms
  Gap Height: 0.375", 9.52mm
  Power: 400W (RMS)
  Basket Diameter: 15", 381mm
  Weight: 19.8 lb., 9 kg
  Voice Coil: 2.5", 63.5mm
  Resonance: 42Hz
  Magnet: 80 Oz
  Frequency Response: 40Hz-4kHz
  Total Q: 0.40