Description
The Optimal Audio Cuboid 3TX is a compact 2-way passive loudspeaker designed for high-quality background music and speech reinforcement in commercial environments. Featuring a built-in 70V/100V line transformer alongside low impedance operation, it provides a flexible and scalable solution for distributed audio systems across hospitality, retail, and corporate spaces.
Engineered to deliver strong performance in a discreet form factor, the Cuboid 3TX is ideal for installations where aesthetics, coverage, and clarity are equally important.
Compact Design with High-Quality Audio Performance
The Cuboid 3TX is built around a 3.5-inch low-frequency driver and a 0.5-inch high-frequency driver, delivering clear and balanced sound despite its ultra-compact enclosure.
With a frequency response of 125Hz to 20kHz and a maximum SPL of up to 104dB peak, it provides reliable performance for background music and speech applications.
This makes it particularly suitable for:
- Background music systems
- Speech reinforcement
- Low-profile commercial installations
100V Line and Low Impedance Flexibility
A key advantage of the Cuboid 3TX is its integrated transformer, allowing operation on:
- 70V or 100V line systems
- 8 ohm low impedance systems
Selectable power taps via a rear rotary switch enable easy system configuration and scalable speaker distribution, making it ideal for multi-speaker commercial setups.
Wide Dispersion for Consistent Coverage
The speaker delivers a wide 130° horizontal by 120° vertical dispersion pattern, ensuring even sound distribution across listening areas.
This allows:
- Fewer speakers to cover larger spaces
- Consistent audio levels across a room
- Improved listener experience in distributed systems
Installation-Friendly and Discreet
Designed for seamless integration into commercial environments, the Cuboid 3TX includes a wall mounting bracket and supports both portrait and landscape installation.
Its compact ABS enclosure and clean aesthetic make it suitable for:
- Bars and restaurants
- Retail environments
- Offices and reception areas
- Hotels and leisure venues
Indoor and Outdoor Capability
With an optional weatherproof terminal cover, the Cuboid 3TX achieves an IP54 rating, allowing it to be used in outdoor or semi-exposed environments.
This expands its application to:
- Outdoor seating areas
- Covered walkways
- Exterior retail or hospitality zones
Designed for Scalable Commercial Audio Systems
The Cuboid 3TX integrates seamlessly with Optimal Audio’s wider ecosystem, including Zone controllers and SmartAmp amplifiers, enabling:
- Centralised system control
- Preset-based optimisation
- Simplified commissioning and operation
It can also be paired with subwoofers such as the Sub 10 to enhance low-frequency performance where required.
