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From our PA Showroom
From our PA Showroom
This item will be available during Audiolab's Tent Sale on 6/6/26 and 6/7/26. Come by Audiolab to find unmatched savings on 6/6/26 and 6/7/26. View some of the items available during our tent sale here.
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You may return most items within 60 days of delivery. Returns made within 30 days qualify for a full refund, while returns from 31 to 60 days are eligible for store credit or an exchange. If the return is due to our error (incorrect or defective item), we’ll cover the return shipping costs.
Refunds are typically processed within one week of receiving your return.
To start a return, log in to your account, go to Complete Orders, and click Return Item(s). We’ll notify you by email once your refund is processed.
For full details, please review our return policy!
Any purchase involving a Trade-In is considered a final sale and not subject to return.
Don’t let the compact dimensions fool you. The Definitive Technology SuperCube Reference is a masterclass in acoustic engineering, designed for the absolute bass purist. Whether you are building a world-class home theater or demands flawless, pitch-perfect low-end extension for a high-fidelity audiophile setup, this legendary subwoofer delivers foundation-shaking power without taking over your living space.
By pressure-coupling a massive active driver to dual infrasonic passive radiators, the SuperCube Reference delivers the raw air-moving power of a traditional 18-inch woofer, but with the lightning-fast transient response and tight control that only a smaller, finely-tuned system can achieve.
At the heart of the SuperCube Reference is a monumentally powerful 1,800-watt Class D digital amplifier. This massive power reserve ensures the subwoofer never runs out of breath, delivering clean, distortion-free bass even during the most demanding cinematic explosions or complex musical passages.
Instead of relying on one slow, oversized woofer, the SuperCube Reference utilizes a sophisticated three-driver array:
One 14” High-Definition Long-Throw Active Driver: Hand-built with a rigid cast-aluminum basket and a massive magnet structure to stay perfectly aligned under extreme excursion.
Two 14” Infrasonic Passive Radiators: Pressure-coupled to the active driver to dramatically amplify total bass output down to a subterranean 11 Hz—well below the threshold of human hearing and deep into the realm of pure feeling.
The non-resonant cabinet features internal bracing nearly 2 inches thick to eliminate sound-muddying panel vibrations. Wrapped beautifully in Definitive Technology’s signature black mesh grille cloth and capped with stunning piano-gloss black endplates, it blends seamlessly into any room decor.
The comprehensive rear control panel puts total optimization at your fingertips, allowing you to perfectly blend the subwoofer with any main tower or bookshelf speakers:
Continuously variable low-pass filter (40Hz–150Hz)
Continuously variable high-pass filter (40Hz–150Hz) for line-level outputs
Unfiltered LFE Direct Input for seamless home theater receiver integration
0 to 180-degree variable phase adjustment dial
| Feature | Specification |
| Amplifier Power | 1,800 Watts Class D |
| Frequency Response | 11 Hz – 200 Hz |
| Driver Complement | (1) 14" Active Woofer, (2) 14" Passive Radiators |
| Inputs | LFE (unfiltered), Line-Level RCA, Gold-Plated Speaker Binding Posts |
| Enclosure Type | Sealed, Passive Radiator Bass-Reflex |
| Finish | Piano-Gloss Black End Plates with Black Mesh Grille |
| Dimensions | 16.9" H x 16.7" W x 16.7" D |
| Weight | 95 lbs (43 kg) |
Why Audiophiles Choose the SuperCube Reference: Most high-output subwoofers sound "slow" or boomy when paired with delicate acoustic music. Because of its pressure-coupled configuration, the SuperCube Reference possesses the speed and musicality required to seamlessly mate with everything from high-end floorstanding towers to electrostatic speakers, all while maintaining the capacity to rattle your windows when a movie demands it.
(1) Definitive Technology SuperCube Reference Subwoofer
(4) Adjustable Carpet Spikes
(4) Isolation Rubber Feet
Detachable Heavy-Duty Power Cord
Owner's Manual
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