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HYPERSUB F-21

Versatility Redefined. 
Bass without Boundaries.

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HYPERSUB F-21

The HYPERSUB F-21 is a purpose-built, four-cabinet subwoofer system designed to anchor medium- to large-sized theaters with predictable, reference-grade low-frequency performance.

 

Combining high-excursion 21-inch drivers, sealed enclosures, and the HYPERSUB 422D DSP amplifier, the F-21 delivers effortless cinematic impact, infrasonic reach, and ultra-low distortion—verified by independent measurement and engineered for RP-22-aligned immersive systems.

Key Features

Powerful 21-Inch Driver
Delivers impactful low frequencies that extend into the infrasonic range.
 
Sealed Cabinet Design
Handcrafted with void-free birch plywood for clean, tight bass response.
 
Advanced Components
Carbon fiber cones and neodymium magnets ensure dynamic, distortion free audio.
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Custom Amplification
The HYPERSUB F-21 pairs seamlessly with the HYPERSUB 422D amplifier, providing 4 × 2200W of power and advanced DSP for tailored sound in any home theater environment.

Room Applications

Home Theaters (Medium to Large)

Delivers immersive, distortion-free bass that meets professional cinema standards.

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Hidden and Discrete Installations

Slim, shallow design fits behind screens and within walls for a clean, minimalist look.

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Flexible Configurations Configurations

Easily scalable with multiple units for uniform bass coverage in large or acoustically challenging spaces.

Specifications

Driver
21-inch neodymium magnet carbon fiber cone

Frequency Response
20-200Hz (-6dB re. 100Hz)

SPL Output
128dB (@1m, half space)

Dimensions H x W x D
33 7⁄8" × 25" × 17"
860mm x 635mm x 432mm

Weight
101 lb
46 kg

Amplifier Compatibility
HYPERSUB 422D

CEDIA / CTA-RP22 Level Achieved
F-21 System  ★ ★ ★ ★
F-21 + F-24 Duo System  ★ ★ ★ ★

Product Documentation

Quick Start Guide

Specification Sheet

Comprehensive features, benefits, technical specifications, CAD drawings.

Imperial

Metric

Compare the Lineup: F-15, F- 21 and F-24 DUO Specifications

Imperial

Metric

Stay in the know

Get exclusive updates on HYPERSUB innovations, product launches, and real-world theater projects—delivered straight to your inbox.

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No noise. Just powerful insights.

Not sure which HYPERSUB system is right for you?

Your theater deserves more than bass—it deserves precision, proven in real rooms. The HYPERSUB Frontier is built for your space and your vision.

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Let’s explore what’s possible.

From Blockbuster movies to subtle musical nuances, the F-21 ensures every detail resonates with clarity and depth, delivering an immersive experience every time.

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