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Optimal Audio Cuboid 12 is a two-way passive 12 inch installation loudspeaker rated 300W AES at 8 ohms, with a 1 inch exit compression driver on a user rotatable 80 x 50 degree horn and 62 Hz to 20 kHz response. It is built for permanent installs in houses of worship, restaurants, bars, hotels, schools and fitness studios, mounted in portrait or landscape.
Full range sound for a room that needs more than a ceiling speaker.
Cuboid 12 is a full range, two-way passive loudspeaker for short to medium throw commercial installations. A 12 inch ferrite LF driver carries bass and midband, and a 1 inch exit compression driver handles vocals and high frequency projection. The HF horn rotates, so coverage stays consistent whether the cabinet is mounted upright or on its side.
The trapezoid wooden cabinet has a black perforated steel grille with scrim backing and 21 inset M8 points for the optional U bracket, wall bracket or eye bolts. A SmartAmp or a powered Zone mixer provides amplification and loudspeaker protection through onboard presets, and with Zone, the WebApp and ZonePad wall controllers, setup and day to day control stay simple. For more low end, Optimal Audio pairs it with the Sub 15 or Sub 18.
At a Glance
| Brand | Optimal Audio |
|---|---|
| Model | Cuboid 12, black |
| Type | Two-way, full range, passive |
| Drivers | 12 inch LF, 1 inch exit HF compression driver |
| Power | 300W AES, 1200W peak |
| Impedance | 8 ohms |
| Coverage | 80 H x 50 V, rotatable |
| Max SPL | 123 dB continuous, 129 dB peak |
| Weight | 44.09 lb |
| Warranty | Optimal Audio manufacturer warranty |
Who Is the Cuboid 12 For?
Installers and venue owners fitting a fixed sound system: sanctuaries and fellowship halls, bars and restaurants, wedding venues, hotels, classrooms and gyms. It is the size to step up to when a room needs real vocal clarity and some weight in the low end, not just background music.
Does the Cuboid 12 Need an Amplifier?
Yes. It is a passive speaker and needs an amplifier rated for an 8 ohm load. Its rating is 300W AES with 1200W peak. Optimal Audio SmartAmp and powered Zone mixers carry onboard presets for it that add loudspeaker protection.
How Do You Mount the Cuboid 12?
Portrait or landscape. The cabinet has 21 inset M8 fittings. Optimal Audio offers the U Bracket C and Wall Bracket B for this model, plus M8 eye bolts, all sold separately.
What Comes in the Box?
One Cuboid 12 loudspeaker. Mounting hardware is sold separately.
Connections
| NL4 | 1 x NL4, input only, pins 1+ / 1- |
|---|---|
| Euroblock | 1 x 4-pin Euroblock, + / - input and + / - link |
Specifications
| Frequency response | 62 Hz to 20 kHz, plus or minus 3 dB, with preset |
|---|---|
| Low frequency limit | -10 dB at 47 Hz |
| LF driver | 12 inch (300 mm), ferrite motor |
| HF driver | 1 inch (25 mm) exit, 1.4 inch voice coil, polyimide dome compression driver |
| Rated power | 300W AES, 1200W peak |
| Nominal impedance | 8 ohms |
| Sensitivity | 98 dB, 1W/1m |
| Maximum SPL | 123 dB continuous, 129 dB peak |
| Crossover | 2.5 kHz passive |
| Dispersion | 80 H x 50 V, -6 dB, user rotatable |
| Enclosure | Trapezoid wooden cabinet |
| Finish | Black textured paint |
| Grille | Black perforated steel with scrim cloth backing |
| Connectors | 1 x NL4, 1 x 4-pin Euroblock with link |
| Fittings | 21 x M8 inset bolts |
| Dimensions | 14.17 x 22.64 x 15.43 in (360 x 575 x 392 mm), W x H x D |
| Weight | 44.09 lb (20 kg) |
| Accessories, sold separately | Wall Bracket B, U Bracket C, M8 eye bolt |
| Recommended sub | Optimal Audio Sub 15 or Sub 18 |
Why Optimal Audio
Optimal Audio is the commercial and installed sound brand of Focusrite Group, the company behind Focusrite, Novation and Martin Audio. It builds loudspeakers, Zone mixers and amplifiers for bars, restaurants, retail, education and houses of worship, designed so an installer can set a system up quickly and the people running the room can control it without training.