REL Sub Bass Reinforcement.

REL make subwoofers. That’s it. Nothing else. No distractions. Nothing to steal their focus. No kidding themselves that they can be good at everything. No trying to conquer the whole world. They just do their best to conquer their bit of it.

REL Reference No.25 Subwoofer - now on demonstration!!!

Beauty, Power and Speed...

No. 25 combines the power of an ultra-reliable 1,000 watt amplifier, with a lightweight and perfectly balanced carbon fibre 15” driver. All this is controlled by REL's legendary filter sets and proprietary crossovers with 2 separate parametric equalizers permitting remarkably flat in-room response, while maintaining the speed and resolution for which modern RELs have become known.

REL want their customers to enjoy all this performance without being limited to only a few room locations, so they've  built-in the legendary LongBow™ wireless receiver into every No. 25. This design utilizes zero compression, resulting in stunning dynamics and bass extension without being tethered to a cable, while delivering sound quality comparable to their competitor’s hardwired designs. It’s just another example of how REL strive to offer complete and thoughtful solutions.

Functional Curves...

No. 25 marks a new standard in cabinet execution, both for its physical beauty and the manner in which it manages the critical backwave propagating from the rear surface of the massive 15″ carbon fibre piston at its heart. The shape of No. 25 is designed to disturb and cancel much of the incredible force created by the inward stroke as No. 25 reloads for your music or film’s next set of demands. It is necessary to keep this backwave as silent as possible, while allowing the driver to “breathe” without compressing dynamics. The curvilinear cabinet walls deflect, diffuse and dissipate these waves into smaller cross plane waves. Minimizing rear waves that eventually emerge as comb filtering — noise that cancels the primary bass — is what creates clear, purposeful bass that strides into a room with tremendous energy and clarity.

Comprised of 30mm thick (about 1 1/8″) Australian MDF, transected by hardwood spars that break up common mode resonances within the top surface of the cabinet and down its sidewalls, the bracing is not unlike the spars in a ship’s hull. Some may view this as excessive, but these are the lengths REL's design team goes to to deliver the finest subwoofer extant, fully fitting of the title No. 25.

Agile Power...

It takes huge power to invest the No. 25 with the shattering dynamics of which it is capable. The rugged beast of a 1,000 watt NextGen3 amplifier that powers No. 25 has already proven itself in the field in one of REL's previous designs, making us comfortable with not only its startling sonic performance but also its reliability.

However, No. 25 is no mere exercise in excess, but rather a thorough exposition in the art of rendering sub bass, totally, completely and with great deftness in tonality, expression and dynamics. It is this ability to not merely play loud, but to bring to life the contrast between loud and soft passages that makes REL owners so passionate about their designs. After all, dynamics are not merely the ability to play loud, but to bring to life the contrast between loud and soft passages in music or film. Ultimately, this is what makes the No. 25 the addiction it quickly becomes.

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REL Reference G1 MKII Subwoofer

A Classic Reborn...

Retained is the classic curvilinear cabinet, with its shape carefully engineered to cancel standing waves as they travel rearward through the cabinet. The laminated hardwood bracing reminiscent of musical instruments still finds a home—though re-configured for even greater rigidity. The amplifier is the powerful, yet highly controlled and ultra-reliable 600w Class A/B with new limiters that allow almost 40% more power being delivered without compression.

The driver—the heart and soul of any REL– has been dramatically upgraded with greater fore-and-aft stroke, a more supple suspension and the ability to handle greater dynamics. This new version is now capable of 112 dB output. expands the performance horizons of the original in every way, whilst retaining its core strengths of dignified beauty coupled to even more savage output.

Hand Crafted from Marine Grade Hardwoods...

Whilst the outer form garners all the praise, with its 1-1/8” thick curvilinear surfaces artfully finished in 12 coats of hand polished piano black lacquer, it is the inner construction that produces the clarity, quietness and dynamics for which G1 MKII will become known. The marine grade laminated hardwoods REL employ are not unlike the spars on a ship. Each cabinet require two days of production time to build a single unfinished cabinet. Then the raw cabinet takes three weeks to handcraft. The resulting structure is far more than a beautiful shape; it is the structural basis for the deep bass the G1 MKII produces.

Class A/B Amplifier...

The massively beautiful, finned, alloy heatsink is necessary when dissipating the sorts of power necessary to produce prodigious deep bass for hours on end. Capable of outputting a conservative 600W (120V) on occasion, REL's dedicated Class A/B amplifier used in G1 MKII is a true dreadnaught. Powerful, fast and capable of tremendous current delivery, it is the finest amplifier ever designed by our engineers.

For G1 MKII REL borrowed techniques learned in just the past year to ensure virtually limitless electronic limiting. These newly developed circuits allow for almost 40% more power being developed through the driver before gentle limiting takes over. The net result is that plays substantially louder (about 5 dB) than its illustrious forebear.

A Carbon Fibre Core... 

The bass engine of any REL is its crowning glory. The G1 MKII driver is some 25% stiffer in bending modes than the award-winning original, which makes it better able to cope with the profound dynamics asked of a Reference Series REL. This improvement permits REL to use a softer suspension better able to react quickly to dynamics, both large and small. The result is a substantial upgrade in the speed, liveliness and dynamics of the entire system. Suspension travel now permits over 2” of stroke, which makes for exceptionally high output, resulting in almost twice as loud a final result as its predecessor. This exceptional force and agility makes the G1 MKII ideal for powerful home theater as well as fine 2-channel systems.

REL Series S 212 SE Subwoofer

Quality meets Quantity...

REL believe in quality first, not simply power and boom. They believe that 1,000 watts is only desirable if it’s conveyed with speed and control. Which is why the 212/SE was engineered to not only make your heart pound and walls shake, but restore midrange warmth and harmonic structure, while providing a powerful, rich low-end. This combination of speed, power and grace driving multiple room modes (forward, down and rear) makes it ideally suited for high end 2-channel, grand rooms and dedicated theaters, allowing larger state of the art speakers to spring to full voice.

Twin CONTINUOUS CAST™ Alloy Bass Engines...

To produce the highest output single-box solution, REL doubled up on the Continuous CastTM Alloy Bass Engines that bring critical acclaim to Serie S, altering them slightly for this twin front-firing configuration. These twin actives are responsible for 212/SE’s incredible speed and tactility.

REL's own Continuous CastTM Alloy Cones reduce moving mass while maintaining rigidity, producing far more speed and precision than prior designs. These twin long-stroke 12″ bass engines, partnered with (2) matching 12″ passives provide the speed quality of a REL with a power never felt before. This combination offers the driven surface area of twin 17” drivers in a cabinet just 16” wide.

Simply Awesome.

Twin CONTINUOUS CAST™ Alloy Passive Bass Radiators...

The 212/SE uses two matching Continuous Cast Alloy passives that are stiff, lightweight and incredibly well behaved. REL's approach to passive design results in performance more akin to a variable ratio driver size – as more power and deeper bass is demanded, the passive comes to life, gradually expanding the capabilities of the active engines.

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.

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REL Series S/812 SHO 12" Subwoofer

The Serie S Flagship...

For S/812, every aspect of the previous generation’s inner workings were examined without regard to its critical and customer-driven success. REL turned a fresh eye to power requirements, driver improvements, and specialty filters, upgrading each to extract all the extra performance possible. All this alongside the cabinet refinements necessary for those upgrades to emerge cleanly. This latest S range is a triumphant development that has exceeded every expectation of REL's design team.

REL's requirements were for far stronger deep bass output between 19-35 Hz, vastly improved theatre dynamics, and an even more open and spacious soundfield which benefits both music and film. They turned to their NextGen5 amplifier, tuned to 800 watts, with huge reserves of power beyond this, added a light film of carbon fibre to the rear of the driver to handle the extra power, and developed two new sets of custom filters to extract the utmost in brute force and spaciousness. Finally, REL imbued 812 with the ability to be stacked in 4- or 6-unit line arrays, just like the reference models.

CONTINUOUS CAST™ Cone Bass Engine...

S/812 required upgrades to its ContinuousCast™ Alloy Cone to allow it to survive the massive power upgrades. To permit its thin, aluminum cone to survive 800 watts and incredibly long stroke, REL added an ultra-lightweight backing of pure carbon fibre, strategically placed over portions of the rear surface of the cone. This produces two benefits; it strengthens and stiffens the cone and also eliminates reversion, wherein the backwave inside the cabinet is now prevented from interfering with the main launch of bass into the room. The result is more accurate and far louder deep bass.

Carbon Passive Radiator...

REL's uniquely tuned passive radiators use special suspensions, now with an additional 30mm of linear travel, to produce performance far beyond conventional subwoofers. REL's new SuperProgressive™ passive radiator produces extremely long travel allowing for very loud output while retaining the variable stiffness of its suspension. This allows it to act like a sealed box compact 12” design at low volume and a high output 14” design at its limit.

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NextGen 3 800 Watt Digital Amplifier...

At 800 watts the NextGen5 amplifier is borrowed from REL's reference models and rocks huge reservoirs of power and current. The 45% increase in power (previous version was 500 watts) is needed to deliver both the profound output levels needed for modern theatre, as well as to produce the deepest bass in a high end 2-channel system. This increase in power is necessitated by REL's development on the musical front of an all-new circuit termed PerfectFilter™ that balance both frequency extremes.

PerfectFilter performs two seemingly disparate qualities; extending the strong, even response of the extreme low end of bass frequencies while simultaneously opening up air and delicacy in the middle and high frequencies of one’s system. Additionally, REL applied customized PureTheatre™ filters to allow S/812 to deliver the most awe-inspiring theatre effects ever offered in a classic REL.

REL Series S/510 10" Subwoofer

Power and Performance...

For S/510, every aspect of the previous generation’s inner workings were examined without regard to its critical and customer-driven success. REL turned a fresh eye to power requirements, driver improvements, and specialty filters, upgrading each-to extract all the extra performance possible. All this alongside the cabinet refinements necessary for those upgrades to emerge cleanly. This latest S range is a triumphant development that has exceeded every expectation of REL's design team.

REL's requirements were for far stronger deep bass output between 20-35 Hz, vastly improved theatre dynamics, and an even more open and spacious soundfield which benefits both music and film. They turned to their NextGen3 amplifier, tuned to 500 watts with substantial reserves of power, added a light film of carbon fibre to the rear of the driver to handle the extra power, and developed two new sets of custom filters to extract the utmost in brute force and spaciousness. Finally, REL imbued S/510 with the ability to be stacked in 4- or 6-unit line arrays, just like the reference models.

CONTINUOUS CAST™ Cone Bass Engine...

S/510 required upgrades to its ContinuousCast™ Alloy Cone to allow it to survive its massive power upgrades. To permit its thin, aluminum cone to survive 500 watts and incredibly long stroke, REL added an ultra-lightweight backing of pure carbon fibre strategically placed over portions of the rear surface of the cone. This produces two benefits; it strengthens and stiffens the cone and also eliminates reversion, wherein the backwave inside the cabinet is now prevented from interfering with the main launch of bass into the room. The result is more accurate and far louder deep bass.

 

Carbon Passive Radiator...

REL's uniquely tuned passive radiators use special suspensions, now with an additional 8mm of linear travel, to produce performance unlike conventional subwoofers. REL's new SuperProgressive™ passive radiator produces extremely long travel allowing for very loud output while retaining the variable stiffness of its suspension. This allows it to act like a sealed box compact 12” design at low volumes and a high output 14” design at its limit.

NextGen 3 500 Watt Digital Amplifier...

At 500 watts the NextGen3 amplifier is borrowed from REL's former flagship model and produces huge reservoirs of power and current. The 20%+ increase in power (previous version was 400 watts) is needed to deliver the high output levels needed for modern theatre, as well as to produce the extremely deep bass in a high end 2-channel system. This increase in power is necessitated by REL's development on the musical front of an all-new circuit termed PerfectFilter™ that balance both frequency extremes.

PerfectFilter performs two seemingly disparate qualities; extending the strong, even response of the extreme low end of bass frequencies while simultaneously opening up air and delicacy in the middle and high frequencies of one’s system. Additionally, REL applied customized PureTheatre™ filters to allow S/510 to keep up with modern theatre effects without breaking a sweat.

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REL Series T/9i Subwoofer

Our Best Selling Subwoofer...

T/9i represents the most of T/i that REL can deliver, and if sheer output alone is a primary requirement for your theater or music system then read no further. The combination of a lightweight, composite 10” driver coupled to a matching 10” T/i passive delivers speed, slam and attack when called upon but also is capable of tracing more delicate passages when necessary. Large in sonic scale, the T/9i is ideal for mating up with floor standing speakers and rooms that are on the medium-to-large size. Powerful, concussive, yet beautiful.

Completely Redesigned...

T/9i delivers more than just raw output. REL started with their driver upgrades and built outward. The lovely cabinets grew by 4 lbs. (1.8 kg) over its predecessor due to thicker cabinet walls and improved bracing. Why? Because the additional speed and impact of the new drivers requires greater control or the benefits can be lost before they get to the listener.

Innovative Alloy/Fibre Bass Engines...

The new composite alloy/fibre engine in T/9i blends precisely the correct dimension of stiffening alloy with a fibre material chosen for its sonic neutrality and light weight. The combination is brilliant; exceeding the performance of competitors’ drivers that are many times more expensive. The forward-firing 10” active couples with a 10” down-firing passive, again with carefully chosen balances of alloy to fibre and the result is seamless, effortlessly deep bass that blends perfectly with the main speakers.

 

The Brains behind the brawn...

REL's acclaimed input filters and robust amplifiers result in some of the best sounding, most reliable designs ever produced. High current power supplies, huge toroidal transformers, and what many critics call the best filters in the world produce the famous REL Effect—where in not simply the bass region but ALL music and movie sound is uplifted and improved.

Zero Compression Wireless...

Arrow™ is RELZero Compression Wireless’s latest generation of zero compression wireless. Super-fast delivery of both High Level Bass and .1/ LFE ensures the rich, natural warmth that only RELs can deliver. With a throw distance of some 45’(13.7M) Arrow permits flexible placement without sacrificing sound quality, T9/T7 and T5 are equipped for wireless connection to Arrow™.

REL Series T7/i Subwoofer

The Perfect Blend...

T/7i is, without reservation, one of the most-balanced RELs of all time. In order to achieve perfect balance, a sub must weigh speed against heft, while ensuring true extension-depth-and do so in a physically harmonious package. T/7i manages to make it all seem easy. Quick and delicate for a perfect blend, it can pound out exceptionally deep, tuneful bass that belies its size and plays louder than most will ever require.

Reimagined, then Reengineered...

When REL upgraded their drivers, they were forced to redesign outward. The lovely cabinet grew over its predecessor due to thicker cabinet walls and improved bracing. Why? Because the additional speed and impact of the new drivers requires greater control or the benefits can be lost before they get to the listener.

Innovative Alloy/Fibre Bass Engines...

The new composite alloy/fibre engine in T/7i blends precisely the correct dimension of stiffening alloy with a fibre material chosen for its sonic neutrality and light weight. The combination is brilliant; exceeding the performance of competitors’ drivers that are many times more expensive. The forward-firing 8” active couples with a larger 10” down-firing passive, again with carefully chosen balances of alloy to fibre and the result is seamless, effortlessly deep bass that blends perfectly with the main speakers.

The Power Behind REL...

If the driver design delivers the structure of REL’s sound, the electronics are the brains and the power behind their success. Serie T/i uses the same Class A/B power amplifier sections with large, high current power supplies, precision-wound toroidal transformers and an amazing reliability record that has powered almost 100,000 RELs. REL's proprietary filter designs are responsible for rave reviews for REL’s unique ability to blend seamlessly while layering on all the harmonic structure missing from conventional systems.

Zero Compression Wireless...

Arrow™ is RELZero Compression Wireless’s latest generation of zero compression wireless. Super-fast delivery of both High Level Bass and .1/ LFE ensures the rich, natural warmth that only RELs can deliver. With a throw distance of some 45’(13.7M) Arrow permits flexible placement without sacrificing sound quality, T9/T7 and T5 are equipped for wireless connection to Arrow™.

 

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REL Series HT Pure Home Theatre Subwoofer

Serie HT is designed specifically to answer the challenge of creating affordably priced, exceptionally dynamic, pure home theater powered subwoofers with the ideal combination of a lightweight, modern CarbonGlas™ drivers coupled to a powerful Class D amplifier that runs cool, producing extraordinary dynamics. Internally, we developed specially adapted home theater input filters that produce extremely flat bass down in the 20Hz range.

SERIES HT HT/1205

Home theatre subwoofer delivers a brand new 500W Class D power amplifier design, coupled to a 12” (300mm) long travel driver to deliver extremely high output in an attractive design.

HT is a powerhouse for dedicated high powered home theatre applications, that will also transform the gaming experience and partners nicely with active wireless speakers.

 

SERIES HT HT/1003

For when there is simply neither the space nor the need for all the output of a larger HT model.

HT/1003 applies the same approach as its impressive stable mate and scales it down by just a little.

10” high-powered, long throw driver and 300W means it has plenty of power on demand.

This unit is intended primarily for high powered home theatre applications, immersive gaming set-ups, and pairs nicely with active powered loudspeakers.

Scaled down design, up-sized performance.

 

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REL Series T5/i Subwoofer

Stunningly Simple...

Simplify, then add lightness: Simplicity is its own reward and T/5i reduces the classic cubic sub to its bare essence. A single, high quality AlloyFibre™ composite driver and down firing orientation produces maximum coupling with the floor and eliminates the need for a grille. T/5i is the purest expression of REL.

A 360 degree upgrade...

REL began by updating their classic 8” bass engine to reduce mass, while greatly increasing stiffness. This improvement led to upgrading cabinet dimensions and wall thickness to better control the deep bass. Additional upgrades extended even into the design of the sub's feet, resulting in greater speed and solidity to the presentation of sound.

Proven Power...

REL’s electronics are the brains and power behind their success. Serie Ti uses the same Class A/B power amplifier sections with large, high current power supplies, precision-wound transformers and an amazing reliability record that has powered some 100,000 REL's.

Zero Compression Wireless...

Arrow™ is RELZero Compression Wireless’s latest generation of zero compression wireless. Super-fast delivery of both High Level Bass and .1/ LFE ensures the rich, natural warmth that only RELs can deliver. With a throw distance of some 45’(13.7M) Arrow permits flexible placement without sacrificing sound quality, T9/T7 and T5 are equipped for wireless connection to Arrow™.

REL T-Zero Minimalist Subwoofer

Compact Power and Finesse...

Tzero is built using a super stiff cabinet construction that drives the resonant frequency higher so it is more easily damped by REL's instrument-grade bracing. REL utilize 5 full coats of lacquer, and solid aluminium feet and badging because REL owners understand quality must extend throughout a product, not just in the most obvious locations. And its diminutive scale allows it to all-but-hide among the furnishings in your home.

Bass Beyond its size...

At REL every clean sheet design begins by defining and designing the best bass engine for a given application. While the long throw 6.5” is REL's smallest-to-date, but make no mistake it is powerful and articulate, able to fill medium-sized rooms effortlessly. Have a much larger space? Distribute them throughout for an unobtrusive spacious presentation of music and film sound.

Right Sized Power and Control...

Though Tzero is REL’s entry level, that doesn’t mean it can’t punch far above its weight class.

100W high current watts from a NextGen Class D amp means it holds its head high and is capable of delivering many years of satisfying performance. Includes a full REL connectivity suite, fast 8ms delay filter set and our famed High Level Input as well as a .1/LFE input.

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REL Longbow Transmitter

LongBow permits very fast, uncompressed bass to be sent wirelessly within the same room approximately 45 feet (somewhat dependent upon room clutter). Conventional wireless systems operate by hugely compressing the sound, shipping the compressed digital bitstream through the air and then expanding it back to its “original” form. The results are a noticeable lag in speed (engineers refer to this delay as latency) and an un-involving quality which often suffers from thinness. LongBow upgrades the digital pipeline from 16 bit to 24 bit, then ships over un-compressed 48kHz signals. Eliminating the compression/expansion chokepoint and using audiophile grade A/D encoders results in fast (typically about 80 percent faster than traditional Bluetooth or Wi-Fi systems) rich, natural bass.

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REL Arrow Transmitter

Arrow is REL's latest zero compression method of distributing wireless and delivers performance quickly, reliably and without the thin, dried out sound most wireless systems deliver. In part, this is achieved by eliminating the often very slow delivery methods offered by off-the-shelf Bluetooth and wi-fi based systems.

This freedom permits ultra-high performance without the cumbersome tether of a cable, allowing careful placement without being limited by the length of a wire and can lead to a better sounding, less cluttered experience. Giving you the ability to place subs in distant corners, along glass walls, or on hardwood floors where a cable would otherwise destroy the effect