Optimal Audio Cuboid Speakers

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Cuboid is a series of full range, two-way, passive loudspeakers designed for short to medium throw distances, delivering rich and detailed sound with punch and precision, at a cost competitive price point. Comprising a 3”, 5”, 6”, 8”, 10”, 12” and 15”, these stylish enclosures provide a professional look, while flexible mounting hardware facilitates a clean and simple installation. Each loudspeaker provides an impressive bass and mid-band with clarity of vocal and high note projection. 

Cuboid 3, Cuboid 5 and Cuboid 6 feature ABS plastic cabinets and painted aluminium grilles, while the Cuboid 8, 10, 12 and 15 feature wooden cabinets with steel grilles and they also benefit from a user-rotatable horn for consistent coverage in either plane. For enhanced bass performance they can be teamed with the Sub Series, and a SmartAmp or Zone will provide optimal sound settings as well as limiters to protect the drivers when playing at louder sound levels.

When coupled with Zone and WebApp, system set up and end user control is straightforward, and can be further enhanced by ZonePad wall controllers.


  • Full range, two-way passive loudspeakers
  • Rich and detailed sound quality at a competitive price point
  • Flexible mounting hardware for a clean and simple installation
  • 70/100V transformer and IP54 options on select models