Cuboid 8

Two-way, full range, passive, 8" loudspeaker

Features
  • Compact sized wooden cabinet
  • Portrait or landscape mounting options
  • Rotatable high-frequency horn
  • 90Hz – 20kHz frequency response
  • Max SPL 115dB (cont), 121dB (peak)
  • 90˚ horizontal x 50˚ vertical coverage

Bars/Restaurants & Cafes

Retail

Wedding Venues

Hotels

Education Facilities

Houses of Worship

Corporate Offices

Museums

Fitness Studios

Residential

Cuboid 8 is a full range, two-way, passive, 8” loudspeaker designed to outperform its compact size. For short to medium throw distances, it effortlessly delivers rich and detailed sound with punch and precision.

With its wooden cabinet, steel grille and optional mounting hardware the professionally presented Cuboid 8 can be fixed in either portrait or landscape mode for a flexible, simple installation.

Cuboid 8 features an 8” (200mm) low frequency (LF) driver for impressive punch and midband with a 1″ (25mm) exit high frequency (HF) compression driver for clarity of vocal and high frequency projection. The HF section delivers consistent coverage in either plane from a user-rotatable horn.

For enhanced bass performance, Cuboid 8 can be teamed with Sub 10 or Sub 15.

SmartAmp will provide amplification, 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 easy, and can be further enhanced by ZonePad wall controllers.

TYPE Two-way, full range, passive loudspeaker
FREQUENCY RESPONSE (with preset) 90Hz – 18kHz ± 3dB -10dB @ 62Hz
DRIVERS LF: 8” (200mm), ferrite motor system HF: 1” (25mm) exit/1” (25mm) voice coil, polymide dome compression driver
RATED POWER 200W (AES) 800W (Peak)
NOMINAL IMPEDANCE 8 Ohms
SENSITIVITY (1W/1m) 92dB
MAXIMUM SPL 115dB (cont), 121dB (peak)
CROSSOVER 2.9kHz passive
DISPERSION (-6dB) 90˚ H x 50˚ V (user-rotatable)
ENCLOSURE Trapezoid wooden cabinet
FINISH Black textured paint
PROTECTIVE GRILLE Black perforated steel with scrim cloth backing
CONNECTORS 2x NL4 type
PIN CONNECTIONS (INPUT) 1+/1-
FITTINGS 16 x M8, inset bolts
DIMENSIONS (W) 256mm x (H) 422.5mm x (D) 261mm (W) 10.08” x (H) 16.63” x (D) 10.28”
WEIGHT 10kg (22.05lbs)

(available separately)

WB1 Wall Bracket

U Bracket 1

Optimal Audio Cuboid 8 FAQs

The Cuboid 8 is an 8-inch, 2-way passive loudspeaker designed for exceptional sound quality in a mid-sized form factor. It’s ideal for a variety of distributed audio applications requiring high-fidelity background music and speech reproduction over short to medium throw distances.

  • Clear and powerful sound: Delivers rich and detailed audio with a maximum SPL (Sound Pressure Level) of 115dB (continuous) and 121dB (peak) for effective sound projection.
  • Wide coverage: Offers a 90° horizontal and 50° vertical coverage angle, ensuring good sound dispersion throughout the intended listening area.
  • Flexible mounting options: Allows for both portrait and landscape mounting for versatile installation based on your space and needs.

Yes, the Cuboid 8 is a passive speaker and requires a separate amplifier to function. Optimal Audio offers amplifiers like the Amp series designed to work seamlessly with their Cuboid speaker range. The amplifier should have a compatible impedance rating (typically 8 ohms) and sufficient power output to drive the Cuboid 8 speakers effectively.

  • Higher sound pressure level: Delivers more powerful audio for potentially larger coverage areas.
  • Wider horizontal coverage: Offers a broader sound dispersion angle ideal for wider spaces.
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