21 Inch Infrasonic Monsters

Looking for the best subwoofer for the money?  Look no further than the UNRIVALED 21 or UNRIVALED 221.  Boasting an incredible carbon fiber driver with a 38mm linear xmax, whopping peak to peak xmech of 100mm, and thermal power handling of 4000 Watts continuous, these subwoofers mean business.  Total output of a single 21 is on par with six 12" drivers!

Designed with the slimmest profile possible, these monstrous subwoofers are easily positioned near a wall without encroaching into the room.

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UNRIV​ALED 221   |  UNRIVALED 2​1

RBH has been known for exceptionally clean, tight, and musical bass even on ported enclosures.  The UNRIVALED 12PS and UNRIVALED 12NS (with associated DA Series amplifier) have brought this to the next level.  With G.A.D.S*, R.D.A.P.**, and R.A.D.*** technology with upgraded wiring and acoustic damping material, tightness and musicality are dialed up to 11.  With an astonishing anechoic response of 20-100hz  (±0.5dB) (yes, you read that correctly) the UNRIVALED 12S is a master at linear bass reproduction.

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UNRIVALED 12PS  |  UNRIVALED 12NS

The passive crossover (/PX) variants offer that exceptional build quality that you expect from an UNRIVALED product with a carefully crafted, hand-made, hand selected crossover with exotic components that bring the sound quality to the next level without compromising the neutral sound that RBH is known for.  Improvements that are immediately noticed are transient response, a clearer, more defined soundstage with pinpoint imaging as well as a deeper and wider soundstage.

The UNRIVALED passive variant helps bridge the gap between Signature Reference and UNRIVALED Active both in price and performance.  

The crème de la crème.  The best of the best.  Active systems are the future with unparalleled control and the most advanced FIR linear phase crossover functionality with up to a staggering 108dB/octave crossover filters, a feat that simply isn't possible with a passive system.

When you buy an RBH UNRIVALED Active speaker system, you not only get a flagship DSP processor with the best Burr Brown DACs, but you also get state of the art class D amplification via the RBH UNRIVALED Alpha amplifier, configured to match the system of choice.

Internal options are available for a cleaner approach.  With the same quality amplification built in and the same DSP functionality as external amplification and processing, there is very little compromise.  

The FIR filters allow the system to achieve a ruler flat response as well as provide time alignment not only with the distance of the speaker drivers, but across the frequency spectrum, ensuring all of the sound connects with your eardrums at the same time.

Welcome to the future!

The RBH UNRIVALED Alpha Amplifier is also available as a standalone unit.  Customizable from 2-16 channels and 140-2000 Watts per channel.  Learn more here:  UNRIVALED Alpha Amp

Damping Materials

Wool is an excellent acoustic absorber.  It has a greater density and absorptive ability over polyfill. It is the material of choice for any sealed enclosures or chambers.

For ported enclosures, cabinets are lined with high quality 1 inch foam which is a terrific absorber and ensures nothing is projected out of the ports.

R.A.D. Technology (Rubberized Aluminum Dampener)***

Each UNRIVALED speaker cabinet is internally lined with an anti-resonance material.

This material is made from rubber and aluminum and is adhered to the internal walls of the speaker.  Effectively, it adds to the absorption of unwanted vibrations.

Internally Wired with Kimber Kable

As part of the no compromise that we pledge with UNRIVALED systems, we utilize Kimber wire with their tried and true braided geometry which further improves crosstalk rejection and external influences.

R.D.A.P. (Resonance Damping Acrylic Polymer)**

To further the performance of the speaker (as well as cosmetics), side panels made from acrylic polymer solid surface, which has a density similar to granite, can drastically improve the rigidity of the speaker, which substantially reduces cabinet resonance providing several benefits including: reducing smearing, improved imaging, improved soundstage, tightened response, and improved clarity.

G.A.D.S. (patent pending)*

On select, sealed only, speaker systems, our new G.A.D.S. (granular acoustic damping system) technology is employed.  Not only does it have mass loading effects, which can further improve the rigidity of the cabinet, it is also an excellent acoustic absorber.  The marvel of this technology is while the granular particulates may occupy a significant amount of space in the enclosure, the impact on the total volume is negligibly effected, therefore the tuning of the box is near unaffected.