Vendor: RBH Sound

RBH Sound Unrivaled 21 Subwoofer System

The Ultimate in Bass Performance — Unrivaled Power, Precision, and Pre

$11,945.00; $11,945.00
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RBH Sound Unrivaled 21 Subwoofer System

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RBH Sound Unrivaled 21 Subwoofer System

Unleash Extreme Low-Frequency Power with Unrivaled Precision

The RBH Sound Unrivaled 21 Subwoofer System redefines what's possible in low-frequency reproduction. Designed for audiophiles and home theater enthusiasts who demand nothing but the best, this powerhouse delivers seismic bass, unmatched clarity, and heart-pounding dynamics that must be heard — and felt — to believe.

Key Features:

Massive 21-Inch Driver: Engineered with cutting-edge technology, the Unrivaled 21 driver features a four-layer 5-inch voice coil, carbon fiber cone, and an incredible 34mm Xmax for breathtaking output and minimal distortion.
Monumental Power Handling: Built to handle up to 6,000 Watts RMS and 12,000 Watts Peak, ensuring explosive performance and room-shaking bass that remains ultra-controlled.
Precision-Tuned Enclosure: A heavily braced, CNC-machined cabinet with reinforced internal structures minimizes resonances and enhances acoustic integrity, delivering tight, musical bass across all listening levels.
Customizable Finishes: Choose from six stunning finish options including Satin Black, Piano Black, High Gloss White, Black Oak, Natural Walnut, and custom-painted finishes to perfectly match your space.
Perfect for High-End Home Theaters and Two-Channel Systems: Whether it's the rumble of an action movie or the subtle textures of a live jazz performance, the Unrivaled 21 elevates your listening experience.

Why Choose the RBH Sound Unrivaled 21?

✔️ Designed and Handcrafted in the USA
✔️ Uncompromised Sound Quality and Build Excellence
✔️ Flexible Configuration Options to Fit Any Room Size
✔️ A True Statement Piece for Serious Audiophiles and Cinemaphiles

Ready to experience bass on a whole new level?
The RBH Sound Unrivaled 21 isn't just a subwoofer — it's the foundation of an extraordinary listening experience. Prepare to feel every beat, every explosion, and every note with stunning accuracy and depth.

🔵 Limited Availability — Built to Order
🔵 Contact Us Today for More Information and Customization Options!

Our Review

At Dreamedia, we seek out the world’s finest audio products — and the RBH Sound Unrivaled 21 Subwoofer System is truly in a class of its own.

🔹 Unrivaled Power:

Featuring a 21-inch carbon fiber driver with a 5-inch voice coil, the Unrivaled 21 handles an astounding 6,000 Watts RMS — delivering bass you don't just hear, but feel.

🔹 Groundbreaking Performance:

Produces chest-pounding, room-shaking bass while maintaining absolute precision and control across all listening volumes.

🔹 True Musicality:

Unlike other large subs, the Unrivaled 21 offers incredible speed, clarity, and dynamic detail — perfect for everything from delicate acoustic music to blockbuster movie effects.

🔹 Superior Build Quality:

Crafted with a heavily braced, CNC-machined cabinet to eliminate unwanted resonances and ensure the purest, tightest bass reproduction possible.

🔹 Luxury Finishes:

Available in Satin Black, High Gloss White, Natural Walnut, and more — ensuring it looks as stunning as it sounds.

🔹 Versatile System Integration:

Ideal for two-channel audiophile setups or reference-grade multi-subwoofer home theaters, offering unmatched flexibility and headroom.

Dreamedia’s Verdict:

If you're ready to unleash the full potential of your sound system, the RBH Sound Unrivaled 21 is the ultimate upgrade.

Specifications

SERIES: Signature Reference Series | Subwoofers
SYSTEM TYPE: Ultimate Subwoofer System
DRIVE UNITS: (1) 21" Carbon Fiber Driver
ANECHOIC FREQUENCY RESPONSE when using DA Series Subwoofer Amplifier: 12Hz-80Hz ± 3dB
SENSITIVITY: 87dB
AMPLIFIER TYPE: Class D
AMPLIFIER POWER: 4000 Watts Bridged w/ customizable DSP
VOLTAGE: AC 100 - 240V ~ 50/60Hz
Peak to Peak Linear Xmax: 76mm
Peak to Peak Mechanical Excursion: 100mm
CROSSOVER FREQUENCIES: 40Hz-180Hz (variable in software)
CROSSOVER SLOPE: 6dB/Octave-48dB/Octave (variable in software)
LFE INPUT: XLR, RCA (with adapter) / DSP Mode Switchable
LFE OUTPUT: Yes, XLR
PHASE CONTROL: 0-180 + delay control (avilable in software)
CABINET DETAILS: High Density Fiberboard (HDF)/ Textured Black
GRILLE DETAILS: Magnetic Grille (black fabric)
FINISHED DIMENSIONS: 44-1/2" W x 28-3/8" H x 21" D
FINISHED DIMENSIONS: (1130mm x 721mm x 533mm)
WEIGHT: 371 lbs (168.3 kg)
WARRANTY: *10 year/amp 3 year limited