HYPERSUB has introduced the F-21, a reference-grade subwoofer engineered for immersive home theaters and high-performance listening rooms. The F-21 is a system that combines four sealed-box subwoofers — each built around a 21-inch, long-stroke carbon-fiber driver, with the HYPERSUB 422D rack-mount amplifier to deliver infrasonic extension to 20 Hz and verified maximum linear output above 120 dB.
With DSP-controlled power (4 × 2200 watts RMS) and integration support for Trinnov Waveforming and Dirac ART, the HYPERSUB F-21 is designed to install cleanly, calibrate predictably, and reproduce low frequencies with speed, control, and impact across every seat.
The F-21 is the expression of the company’s “measured, not marketed” philosophy — hand-built in Canada and verified to a 1% performance tolerance, ensuring every unit measures within 1% of its reference design. With 2000+ QC points per system, RP-22 alignment, AES75, and ANSI/CTA-2010B validation, its output and distortion specs are grounded in real data. HYPERSUB’s product development unites system-level design from Acoustic Frontiers with ODM transducer and amplifier engineering from Harbottle Audio, bringing together room-centric integration, LDLC (Low Distortion, Low Compression) validation, and precision-matched amplification.
The F-21 delivers:
- Complete four-cabinet system powered by the HYPERSUB 422D amplifier
- Max linear SPL 122 dB (AES75, 1m, free space) and 128 dB broadband peak (ANSI/CTA-2010B, 1m, half-space).
- Sealed-box design with a rated 20–200 Hz (–6dB rel. 100 Hz) response for full-bandwidth bass reproduction
- Engineered to work with Trinnov Waveforming and Dirac ART
- Void-free birch plywood cabinetry with real-wood veneer, beveled-edge black finish; made in Canada.
- 1% Performance Tolerance; NWAA Labs verification; RP-22 alignment.
- 5-year warranty
Engineering details:
- Transducer: 21-inch neodymium, long-stroke driver (>3 inches of linear excursion) for deep, distortion-free bass.
- Form factor: 17-inch shallow depth (432mm) supports hidden or flush installations without sacrificing output.
- Amplification and I/O: 422D provides four balanced XLR inputs and four SpeakOn outputs; 10-band parametric EQ per channel (bell, low/high shelf, notch, all-pass), with low-/high-pass, level, delay, polarity, and limiting.
- System dimensions (per F-21 cabinet): 33-⅞ inches H × 25 inches W × 17 inches D; 101 pounds.
Today’s reference-level cinema and immersive audio demand multiple subwoofers to smooth modal behavior and maintain linear output across seats. The F-21 is designed as a mechanically and electrically coherent four-sub array, enabling integrators to achieve predictable RP-22 outcomes with modern room-correction platforms.
The F-21 system is available now through hypersubwoofers.com.
