The Alto Hemisphere

Currently the highest voice in the Hemisphere choir, Alto Hemispheres are the most portable option for the mobile electronic musician.

alto-powered-angleFeature list and Specifications for both powered and passive Alto Hemispheres:

  • Custom-built MDF enclosure
  • Finished with  a state-of-the-art black powder coating process
  • Five handles, for easy rigging and portability
  • Speaker elements: six Polk Audio db401 full-range drivers.  For full specifications, see the Polk Audio website. Or, download a .pdf of the speaker manual from Polk.
  • Frequency response: 85 to 22,000 Hz
  • Height at Center: 7″
  • Diameter at base: 18.375″
  • Weight (speaker only): 17 lbs
  • Shipping Weight for powered Alto Hemisphere (with packaging, two adapter cables and power supply): 21 lbs
  • Shipping Weight for passive Alto Hemisphere (with packaging): 18 lbs
  • Shipping Dimensions: 22″ x 22″ x 10″

 For powered Alto Hemispheres:

  • Audio Input: Neutrik locking 6-pin XLR jack, plus two included adapter cables:
    • For using the speaker as a mono cabinet, a 6-pin XLR male to 1/4″ female jack cable is included
    • For using the speaker as a six-channel array, 6-pin XLR male to six RCA male plug breakout cable is included
  • Required Power: 12V, 8A (power supply included)
  • Amplifier Output Power : 15 W/channel
  • Green power indicator LED
  • Red overload indicator LED

alto-passive-headonFor passive Alto Hemispheres:

  • Audio Input: Neutrik locking 1/4″ phono jack (mono operation only)
  • Output power handling: up to 200W continuous, @ 4 or 8 Ohms


OK, so how do I order one? >

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