Rated 4.9 (120 reviews)
The Optimal Audio Cuboid 15 is the flagship of the Cuboid range, a high-power two-way passive loudspeaker featuring a 15-inch LF driver and 1-inch exit HF compression driver with 500W programme power. Built for large venues, performance spaces, and permanent installations where maximum output and low-frequency extension are required, it delivers the headroom and projection needed for demanding live sound and AV applications.
500W
Power Handling · Programme
15″
LF Driver · Low Frequency
1″ Exit
HF Driver · Compression Driver
Rotatable
HF Horn · Portrait / Landscape
Features
15″ LF driver with 1″ exit HF compression driver for maximum output
500W programme power handling, flagship of the Cuboid range
Rotatable HF horn maintains correct dispersion in portrait or landscape
Steel grille for robust protection in demanding environments
Extended low-frequency response from the largest driver in the range
Compatible with Optimal Audio SmartAmp DSP-optimised amplification
Works with Zone controllers, ZonePad wall panels, and WebApp
Suited to large venues, performance spaces, and permanent installations
Specifications
| Model | Cuboid 15 Black |
| SKU | CUBOID15-B |
| Speaker Type | Two-Way Passive |
| LF Driver | 15″ |
| HF Driver | 1″ Exit Compression Driver |
| Power Handling | 500W |
| HF Horn | Rotatable |
| Grille | Steel |
| Colour | Black |
