Alpha 115

1000 Watt Loudspeaker with Built-in Alesis DSP


Powerful sound in a lightweight portable design.

The Alpha 115 is designed from the ground up to be the most transparent loudspeaker in its class. Its neodymium 15” LF driver produces smooth low-end while its custom designed 1.75” titanium HF driver provides incredible high-end across a wide dynamic range.

The Alpha 115 has a complete mixer section with all the inputs and outputs you need, plus some additional features to enhance your sound. Two Mic/Line combo inputs with independent volume controls are available as well as an XLR output to link speakers. The Contour switch instantly provides a gentle EQ curve that's perfect for music playback.

The lightweight cabinet is perfectly suited to perform as a traditional upright loudspeaker or as a floor wedge monitor. The Alpha 115 is stand- or pole-mountable via its standard 35 mm socket, and standard M10 rigging points are built in for flying the speaker overhead.

Alesis Digital Signal Processing is onboard to control key aspects of the speaker’s operation, resulting in precisely tuned and completely consistent performance for any live sound application.



  • 1000 Watts Class D power
  • Alesis DSP Technology
  • 15” neodymium LF driver
  • 1.75” titanium HF driver
  • Two Mic/Line combo inputs with independent volume controls
  • XLR output to link speakers
  • Lightweight, trapezoidal cabinet with handles
  • Use as a traditional upright loudspeaker or as floor wedge monitor
  • 100 x 60 long-throw coverage field
  • Ground Lift switch
  • Stand/pole mountable or flyable
  • Clip Limiter with red LED
  • Contour switch for increased EQ control
  • Accurate audience coverage, not just on-axis
  • Designed and tuned in the USA
  • Dimensions: Height X Width X Diameter: 679mm x 430.3mm x 365mm (26.75 x 16.9 x 14.3)

Docs and Downloads

  • Alpha 115 - User Guide - v1.2Open



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