The Optimal Audio Cuboid 6 is a two-way passive loudspeaker featuring a 6.5-inch low-frequency driver and 60W programme power handling. Designed for commercial installations where more low-end presence and output is needed than the smaller Cuboid models can provide, it suits larger bars, restaurants, function rooms, and corporate spaces. Also available in white.
60W
Power Handling · Programme
6.5″
LF Driver · Low Frequency
IP54
Ingress Protection · With optional cover
Features
6.5″ LF driver for extended low-frequency response
60W programme power handling
Portrait or landscape mounting orientation
IP54-rated with optional outdoor connector cover (CIPKIT)
Compatible with Optimal Audio SmartAmp DSP-optimised amplification
Works with Zone controllers, ZonePad wall panels, and WebApp
Larger cabinet delivers more low-end presence than the Cuboid 3 and 5
Black finish for unobtrusive integration
NoteThis is the low-impedance passive version. For 70V/100V distributed audio systems, see the Cuboid 6TX variant. The optional CIPKIT connector cover is required to achieve the full IP54 rating for outdoor or exposed installations.
Specifications
| Model | Cuboid 6 Black |
| SKU | CUBOID6-B |
| Speaker Type | Two-Way Passive |
| LF Driver | 6.5″ |
| Power Handling | 60W |
| Ingress Protection | IP54 (with optional connector cover) |
| Mounting | Portrait / Landscape |
| Colour | Black |












