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The Infinity ALPHA 40 is a mid-range, 3-way, dual 6-1/2" floor-standing loudspeaker.

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The Infinity ALPHA 40 is a mid-range, 3-way, dual 6-1/2" floor-standing loudspeaker. Available in black, white, and cherry finishes, its three drivers utilize "Ceramic Metal Matrix Diaphragm" technology, which aims to reduce distortion and improve sound accuracy. The ALPHA 40 was released alongside the ALPHA 10 and 20 bookshelf speakers, the 2-way, less powerful ALPHA 30, and the higher-end ALPHA 50, which features 8" rather than 6-1/2" low-frequency drivers, enabling a stronger bass response. Gold-plated, bi-wirable binding posts are standard with both models, as is a 5-year parts-and-labor warranty.

Features
  • Floorstanding
  • Dual 6-1/2" low-frequency drivers
  • 5-1/4" mid-range driver
  • 1" high-frequency driver
  • CMMD technology
  • 45Hz-22kHz frequency response range
  • 10-150W recommended power amplifier range
  • 91dB sensitivity
  • Gold-plated bi-wirable binding posts
  • Black, cherry, or white finish
  • 44 lbs
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