212/Sx

United Kingdom flag
REL Acoustics 212/Sx #1
REL Acoustics 212/Sx variant 1
REL Acoustics 212/Sx variant 2
REL Acoustics 212/Sx variant 3
REL Acoustics 212/Sx variant 4
REL Acoustics 212/Sx variant 5
REL Acoustics 212/Sx variant 6
REL Acoustics 212/Sx variant 7
REL Acoustics 212/Sx variant 8
REL Acoustics 212/Sx variant 9

REL Acoustics 212/Sx

View at REL Acoustics
App Control

A stellar performer, now delivering more power with effortless clarity—elevating volume, enhancing precision, and preserving the finest nuances of air and space like never before.


  • 1,000-watt NextGen 5 Class D Amplifier
  • 12" Continuous CastAlloy™ Active Drivers (2)
  • 12" Rear-Firing Passive Driver
  • 12" Down-Firing Passive Driver

Quality Meets Quantity

The Powerful 212/SX

At REL, a deeper understanding of quality underpins everything we do. So, whilst 212/SX thunders and shakes foundations, it also resolves detail and restores midrange warmth to its correct balance. At 1,000 watts with (4) 12” (350mm) drivers, 212/SX drives rooms hard and in multiple modes which allows it to create richer bass everywhere in a room.
Refinements to both our legendary ultra-fast filters and newly developed drivers produces harder slam and brings to life quieter, gentler moments, improving system performance at both extremes. Plays brilliantly with both high end 2-channel and large power theatre applications.


At REL, a deeper understanding of quality underpins everything we do. So, whilst 212/SX thunders and shakes foundations, it also resolves detail and restores midrange warmth to its correct balance. At 1,000 watts with (4) 12” (350mm) drivers, 212/SX drives rooms hard and in multiple modes which allows it to create richer bass everywhere in a room.
Refinements to both our legendary ultra-fast filters and newly developed drivers produces harder slam and brings to life quieter, gentler moments, improving system performance at both extremes. Plays brilliantly with both high end 2-channel and large power theatre applications.


Double Down

Lightweight carbon fiber blades firmly attached to the rear of each active alloy cone serves to both strengthen the cone and quiet it. The twin 12” (300mm) active drivers now offer an additional 12mm of stroke and also benefit from updated suspension geometry and greater power handling. And a brand-new double-spider, high powered passive unit on the bottom delivers floor rippling low bass. The result is a major step forward in the 212 design, an already brilliant performer now playing louder with greater ease whilst better preserving the tiniest details of air and space with even greater precision.


Sound Beyond Its Size

Our uniquely tuned passive radiators use special suspensions, now with an additional 30mm of linear travel, to produce performance far beyond conventional subwoofers. Our new SuperProgressive™ passive radiator produces extremely long travel allowing for very loud output while retaining the variable stiffness of its suspension.
The down firing passive produces deep, floor-crawling bass that makes a room shudder. Mounted above the amplifier panel on the rear is the second passive. This unit produces wrap around “atmospheric” bass that adds air and shimmer to the sound. Coupling with either the rear wall or the rear corner of a room allows for bass to develop exceedingly long wavefronts and adds an ease and effortless quality unique to single-box designs.


NextGen 5 1,000w Digital Amplifier

With incredible reliability in units now numbering in the thousands, the NextGen 5 Class D amplifier is a paragon of extreme power and reliability. At 1,000 watts of output, plus the ability to connect both High Level and .1/LFE simultaneously with optional state of the art wireless, 212/SX delivers the goods at scale. It does so with incredible grip and control in the extreme deep bass where most amplifiers get loose and lose control.
212/SX has an almost limitless sense of power, coupled with precision. Where others offer brute strength, we deliver massive power and every secondary category of performance with ease and effortless versatility. Deafening output in a concert video or blockbuster movie? Check. Beautifully rendered female vocals accurately placed within a stone abbey? Check.


Futureproof Wireless

We seized the opportunity to develop a new high resolution, audiophile-grade uncompressed wireless system for 212/SX and our newer offerings in the Reference range. Airship™ is a new 5.8 gHz military-based wireless system built into a monolithic LSI chip that delivers incredibly fast bass. We ship full bandwidth, not just bass, through this system that includes (2) channels. The first channel handles our High Level Input and can be used for both stereo bass or use of a single channel with monoblock amplifiers. Simultaneously, Airship will process the .1/LFE channel necessary for special effects in film so both RCA and XLR inputs are provided. In the future, we anticipate adoption of more active wireless loudspeakers reaching the market, so we included stereo low level inputs. With Airship, you’re ready for the future.


FAST, EASY & NEAR

Find REL Acoustics Verified Dealers Near You

REL Acoustics dealers in the map

Featured Member
The ASOC Gallery of Fine Audio
110Hz
Acoustic Sounds
American Sound
Arctic Audio
Area Hifi
Aris Audio
Audio Advice
Audio Advisor
Audio Experience
Audio Magic - EU
Audio Perfection
Audio Solutions - AU
Audio T
Audio Vision San Francisco
Audio Zaal
Audiolab Stereo & Video
Audiolight
Aural HiFi
BELHIFI
Carlton Audio Visual
Chiltern Audio
Class A Audio
Command Performance AV
Common Wave Hi-Fi
DIGIThome
Delve Audio
Don Walker Audio
Doug Brady hifi
Douglas HiFi
EHEAD Audio
Editors Choice HiFi
Elecson KLS
Elite Audio UK
Giese High Fidelity
Harrow Audio
Hawthorne Stereo
Hey Now Hifi
HiFi Buys
HiFi Connoisseur
HiFi Loft
Hifi Collector
Hifi Corner
Hifi Regler
House of Stereo
Hunt AV
J&J Audio Solutions
KJ Westone
King Audio
Knox Audio
Krispy Audio
Kronos Audio Visual
Lifestyle AVI
Living Entertainment
Miranda Hifi
Music Direct
Music Matters Hi-Fi
Music for Pleasure
Nintronics
North Coast Audio
Novo Musica
Now Listen Here
Overture Audio
Reference Analog
Rhapsody Audio
Richer Sounds
RockOnAV
Scott Walker Audio
Seattle Hi-Fi
Space Hi Fi
Spalinger
Stereo Unlimited
Sydney HiFi
Technology Factory
The AUDIOBARN
The Cable Company
The Music Room
Upscale Audio
Vinyl Revival
Wide Screen Audio
Wilkinson's Hi-Fi
YANA
All Elite Audio
Audio Connect
Crutchfield Stores
KT Radio
ljudshopen
AudioPerformance
ljudmakarn
HIFIMESTA
Ljudupplevelser -Sweden
Hifi Marseille
AMPL’HIFI
Playhifi
Son-Video
club hifi
The Sound Environment
maPlatine.com
Audio Evolution
Auditorium A. Le Bourhis
L’AUDITORIUM PARISIEN
Auditorium
3mA Audio
HIFI SOLUTION
La Liberte Electronique
AUDIO EXCLUSIVE
AUDIO VIDEO PASSION
AUDIO VIDEO TODAY
Les artisans du son
Linia Dzwieku
AV.com
AV Corp
Liquid Sound
Listen Audio
ListenUp
AV Luxury Group
AV Solutions - Italy
Loftsound
Lone Crow Audio
Loud & Clear
MD Sound
Acoustic Streams
Acoustica
MUSIK & MÖBELBAU REINHART
MUSIKIT
Magic Sound
Martins Hi-fi
Alta Fedelta
Fidelis Audio
Anquan
Fly Hifi Stereo
Frank Harvey - Hi-Fi Excellence
Freak Control
Minneapolis Hifi
Audible Images
Mister Hifi
Moorgate Acoustics
The AUDIO-TAILOR
Audio Aktoren
P&A Audio
Audio Ark
Audio Artisans
PASSION HOME CINEMA
Peak Hi Fi
Perfect sense Audio
Perrotta Consulting
Peter Tyson
Goodwin's High End
New Life Audio Solutions
Coffs Coast Audio
James Morrow Home Entertainment Systems
Analogue Seduction
Cultured Audio
Bradford's Home Entertainment
deciBel Audio
Kruunuradio
Rennaissens
Toponil
Audio Destination
Audio Factory
hifivideo
Audio Sanctuary
Precision Audio Video
Premium Sound - UK
Audio Venue
Audio Works
Audio Video Synergy
audioneo
The Audio Co.
Audiotehnika
The Listening Room
The Sound Advantage
kkrs.pl
Studio Hi-Fi
The Voice That Is
Theater Advice
Theatermax LLC
Tivoli Hi-Fi
TS Multimedia
Tune HiFi
WestCoast Hifi
Weybridge Audio
Valencia Hi-Fi
Vickers HiFi
Ultra Fidelis
Underwood HiFi
Unilet Sound & Vision
Utah Audio
Oranges & Lemons
Oxford Audio Consultants
Natural Sound
New York Sound & Vision
Noir Et Blanc
Northern Audio
Kazoo Audio
Kosmas Audio Video
Jordan Acoustics
G3Fi.com
Glenn Poors AV
Gulliford Hi-Fi & Home Entertainment
Rayleigh Hi-Fi
Reference Media
Revelation Audio
RMS Store
Sevenoaks Sound and Vision
Shelley's Stereo
Signals
Simco Audio
Simply Stereo

Join us at T.H.E. Vegas 2026!

T.H.E. Show

+

HiFi Hub Logo

Reviews

Online Reviews & Mentions

Forum Mentions

No forum mentions found yet

store
store
store
store
store
store