RBH UNRIVALED SFTR AX + Alpha Amp – Active Floorstanding Tower Speaker System

RBH UNRIVALED SFTR/AX + Alpha Amp – Active Modular Tower Speaker

The modular SFTR tower system brings flagship technologies in a more compact package aimed at music lovers, but is no slouch with home theater duties. The MTM driver array and dual 12″ sealed subwoofer pedestals offer a complete experience. If you want the best technology, the UNRIVALED SFTR/AX with active crossover technology is the answer, featuring time alignment, linear phase FIR filters, and all the DSP control you could want for a truly exemplary speaker system that must be experienced.

• (1) 4.72″ x 1″ (120 x 25mm) High Dynamic AMT Tweeter
• (2) 8″ Aluminum Cone Mid-Woofers in MTM array
• (2) 12″ Long Throw Aluminum Cone Woofers
• Sealed subwoofer enclosure
• 4Ω Impedance
• 80Hz, 2000Hz crossover frequencies (Active), 80dB/Octave
• 20Hz-35kHz (±3dB) Frequency Response
• 92dB Sensitivity
• Made in USA
• 10 Year Limited Warranty (with registration within 90 days) / 3 Year Limited Warranty – Amplifier (with registration within 90 days)

Highlights & Key Technologies

The UNRIVALED Difference
UNRIVALED is a pursuit by RBH Sound to make the best even better; to make a speaker system with the best technology, best build quality, and top tier internal components. To achieve this goal, RBH offers two varieties of UNRIVALED to cater to the individual: UNRIVALED Passive (/PX) and UNRIVALED Active (/AX). RBH can convert any product in their line to UNRIVALED standards on request.

Modular Tower System
This modular tower system combines the 821-SF/R speaker with the 1212-MS/R subwoofer to create an incredible reference tower. Combined with a Linear Phase FIR DSP engine and RBH Sound Alpha amplification, it creates a top tier performance for a mid tier price. Adopting many of the design features that are in the flagship SVTRS/AX system, the SFTR/AX is an impressive system with minimal footprint. You will become completely immersed in sound with the immense power of this flexible modular tower. The dual, sealed, reference 12″ sub supplements the full range 821-SF/R with perfection. If you are looking for an UNRIVALED performance with minimum footprint, this speaker is the answer — it offers the ultimate blend of dynamics, musicality, and precision.

High Output AMT Tweeter
A large, high output Air Motion Transformer (AMT) tweeter handles high frequency reproduction, with tweeter protection included.

Classic MTM Array
The top module places dynamic 8″ aluminum mid-woofers in a symmetrical MTM layout around the AMT tweeter for improved imaging and reduced vertical reflections. The aluminum cone drivers are available in black or silver, and provide timbre matched options for multi-channel sound across all freestanding, bookshelf, on-wall and in-wall products in the SF, SV or SI-Series.

Powerful Musical Bass
The subwoofer module is purpose built to supplement the dual 8-inch aluminum mid-woofers and reference AMT tweeter in the top module with depth defying, musical bass. The dual 12-inch reference aluminum sub drivers deliver the sonic impact, clarity and low-end extension of a much larger speaker. You will be amazed at this speaker's dominance in both home theater or critical two channel listening.

UNRIVALED Active Crossover System (AX)
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.

RBH UNRIVALED Alpha Amplification
The system is externally amplified with RBH Alpha amps and external DSP processing with FIR linear phase filters, delivering 250 Watts to the tweeter, 500 Watts to the midrange, and 2000 Watts to the subwoofer. The Alpha amplifier delivers state of the art performance with 2-16 channel configurations and from 140 Watts up to a massive 2000 Watts per channel in a compact 2U chassis. It utilizes hyper efficient class D amplification with a resounding >1000 damping factor for unbelievably accurate sound reproduction that can handle the most demanding transients in any content you throw at it. Explosions never hit harder and the palpability of drums never felt more realistic. The faceplate is made from solid surface acrylic polymer polished to a semi-gloss finish and includes diamond cut logos for a shimmering finish.

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 RBH pledges with UNRIVALED systems, Kimber wire is utilized 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. Gloss acrylic polymer side panels are UNRIVALED only.

G.A.D.S. (patent pending)
On select, sealed only, speaker systems, RBH's 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 affected, therefore the tuning of the box is near unaffected.

Cabinet, Grille & Stability
The cabinet is HDF with acrylic polymer construction, individually hand assembled and tested, made in USA of High Density Fiberboard (HDF). It is available in satin black or white, with magnetic white or black fabric grilles included, and is supported by spiked outriggers.

Details & Specifications

MODEL INFORMATION
Model Name: UNRIVALED SFTR/AX
Series: Premier, UNRIVALED
System Type: Freestanding Active/Passive Modular Loudspeaker System
Installation Type: Freestanding
System Type (power): Powered (active)
Modules: 821-SF/R top speaker module; 1212-MS/R subwoofer module
Sold per pair

DRIVE UNITS
821-SF/R: (1) 4.72″ x 1″ (120 x 25mm) AMT Tweeter, (2) 8″ Aluminum Cone Mid-Woofers
1212-MS/R: (2) 12″ Aluminum Cone Woofers
Tweeter Protection: Yes

PERFORMANCE
Frequency Response: 20Hz-35kHz (±3dB)
Sensitivity: 92dB (2.83V / 1 Meter)
Impedance: 4Ω
Recommended Power: 100-350 watts
Amplifier Power: 400w (for /AX version)

CROSSOVER
Crossover Frequencies: 80Hz, 2000Hz (Active)
Crossover Slope: 80dB/Octave (Active)
Filter Type: FIR linear phase, up to 108dB/octave crossover filters

AMPLIFICATION
RBH Alpha Amplifier: Tweeter 250 Watts, Midrange 500 Watts, Subwoofer 2000 Watts
Configuration: Externally amplified with RBH Alpha amps; external DSP processing with FIR linear phase filters. Internal options available with the same quality amplification built in and the same DSP functionality

CABINET & FINISH
Enclosure: HDF/Acrylic Polymer (UNRIVALED)
Cabinet/Color: HDF construction, Satin Black or White
Finish: Satin Black or Satin White
Side Panels: Gloss Acrylic Polymer Side Panels (UNRIVALED only)
Grille: White or Black fabric, magnetic
Outriggers: Spiked

FINISHED DIMENSIONS
57-3/4″ H x 13-1/4″ W x 17″ D (1467 x 337 x 432mm)

WEIGHT
160lbs (72.57kg)

ORIGIN & WARRANTY
Made in USA
Designed, Engineered, Tested and Assembled in USA from American and imported parts
Warranty: 10 Year Limited Warranty (with registration within 90 days) / 3 Year Limited Warranty – Amplifier (with registration within 90 days)

UNRIVALED ALPHA AMPLIFIER – INCLUDED
Model Name: UNRIVALED Alpha Amplifiers
Series: UNRIVALED series
Amplifier Type: High Efficiency Class D
Number of Channels: 2-16
Power Output Per Channel: 140 watts - 2000 watts
THD+N (typical): <0.09% (20 Hz - 20kHz, 8 Ohm Load)
SNR: 120 dB (A-weighted, 20Hz - 20kHz)
Damping Factor: >1000 (8 Ohms, 1kHz and below)
Frequency Response: 20 Hz -20kHz (+/-0.25 dB, 8 Ohm Load)
Input Connectors: XLR, (RCA with Adapter)
Output Connectors: 2-10ch Binding Post, 11-16ch Speakon
Cooling System: Low noise fans; air flows front to rear
Power Supply: AC 100 - 240V ~ 50/60Hz
Dimensions (WxHxD): 17-3/8" W x 4-1/8" H x 19-1/4" D (441 x 105 x 489mm)
Rack Space: 2 U Rack Space
Weight: 15.5+ lbs (7.03+ kg)
Faceplate: Solid surface acrylic polymer, polished to a semi-gloss finish, with diamond cut logos
Warranty: 3 Year Limited Warranty (with registration within 90 days)