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REL T/5x Subwoofer

Ships in 4 to 7 Days
From $1,499

No model in REL’s long history has sold more units nor engendered more affection than the T/5. Here, reimagined in a modern, elegant, new form factor, T/5x’s mission remains the same: make remarkable bass far beyond its modest size, do so in a way that complements every interior’s style, and eliminate all visual distraction. Mission Accomplished.

REL T/5x - Designed for Elegance

Perfect for small and medium rooms, T/5x seats perfectly into any décor. Floor-firing is part of its secret; bass energy strikes the floor and spreads uniformly throughout the space making it perform like a larger model. For those picky about style, the hidden bonus is this design eliminates even the grill, rendering it the purest of forms.

Slightly larger in volume than its predecessor, it actually appears to be smaller due subtle design changes to minimize its visual presence. Finally, 5 hand-polished coats of lacquer in your choice of High Gloss White or Piano Black add lustre to the softly rounded cabinetry.

Key Features:

• An evolution of the popular T/5
• Closed box, down-firing subwoofer delivers a room-filling sound
• 8" FibreAlloy long-throw driver
• 125W RMS of power from the Class A/B amplifier
• In-room frequency response down to -6dB at 32Hz
• High-level, Low-level, & LFE inputs
• Finished with 5 coats of high-gloss black or white lacquer
• Compatible with the Arrow wireless transmitter system (sold separately)


Faster and Deeper

T/5x borrows a single long-throw 8” (200mm) bass engine from its elder sibling, the T/7x. Developed using a composite of aluminium and light paper, this cone captures details that will amaze, while supplying sufficient energy to plumb deeper than one would expect for its size. In T/5x, its throw, meaning its ability to play louder, has been increased. Internally, the suspension received numerous upgrades akin to transforming the handling of a car from a family sedan to a true sports car. More power, greater finesse.

Amplified Power

T/5x builds on its predecessor’s reliable, expensive 125 W Class A/B amplifiers. Internally, key items significant to upgrading transparency and speed have been upgraded at no cost to REL’s legendary reliability. Separate inputs for High-Level Inputs, Low-Level Input (necessary for the increasing number of powered active speakers emerging on the market) allow for a natural, perfect transition from speaker to subwoofer. And in theatre, a separate, dedicated .1/LFE Input for Theatre performance permits automatic transition between music in high-end 2-channel applications and home theatre without needing to change a single setting. Magic? No, superior engineering.


A 360-Degree Upgrade

Many don’t realize the intense linkage between performance and design in REL's products. Performance is everything and so it drives physical design revisions. REL's engineers, recognizing the need for greater acoustic volume to achieve the goals of greater fluidity and power, turn to the designer who works dimensions to fool the eye into seeing a smaller, more compact footprint even though cabinet volume increases. Using gently rounded corner radii allows the eye to flow over and see less visual mass. The result is both modern and familiar with no unnecessary adornment.

Zero Compression Wireless - Optional Wireless Transmitter

REL has developed a sterling reputation for building the finest sounding, fastest wireless systems available in the industry. This leading brand never rely upon digital compression as it results in thin, lifeless sound. Instead, they have perfected an optional wireless transmitter system; so fast and dynamic we’re comfortable encouraging the use of wireless on one channel of a pair of RELs while the other channel may be connected hardwired with cable.

For freedom of sub placement, purchase the Arrow Wireless Transmitter System here

Serie T/x - Beyond Convention

REL Acoustics prefer to refine, to build generationally upon a solid foundation while searching relentlessly for every possible way to legitimately improve upon their past performance. Their goals were not simply to improve upon its illustrious predecessor, but to deliver as much as possible of the latest Serie S on a budget.

Serie T/x is instantly seen as crisper, fresher, and a full upgrade. Faster, more transparent sounding system performance awaits you with higher output levels and even greater impact.

REL Acoustics - Do One Thing. Do It Perfectly.

We make subwoofers. That’s it. Nothing else. No distractions. Nothing to steal our focus. No kidding ourselves that we can be good at everything. No trying to conquer the whole world. We just do our best to conquer our bit of it.

We obsess over the details, never satisfied, never finished, constantly refining, simplifying, building iteratively upon what has come before. This is the path to perfection, a never-ending pursuit for better.

From the beginning, this has been a labour of love, born from a desire for a more perfect sound experience. It began with one man’s dissatisfaction with the performance of subwoofers available at the time. That search for better, that pursuit of perfect sound remains the driving force behind REL. It has persisted through changes in ownership, it has driven massive advancements in technology and innovations in designs. Turning loose the power, the drama and the fun that lies within great music and movies.

We take this approach on every model, no matter its size or price. Because we believe the pursuit of perfect sound is a worthy endeavor, one that can start anywhere and last a lifetime. We hope you’ll join us.

More Information
Model Number T/5x
RRP 1,399.00


Closed Box, down-firing driver

8 in. FibreAlloy™, 200mm long-throw, inverted alloy dust cap, steel chassis


-6dB at 32 Hz

High-Level Neutrik Speakon, Low-Level single RCA, LFE RCA


125 watts (RMS)

Class A/B

Arrow (Optional), Zero Compression, Single Large Scale Integrated Chip


Protection System




220-240 volts

1.6 Amp semi delay 230 volts operation, 3.15 Amp semi delay 115 volts operation



300 x 307 x 313 mm (11.8 x 12 x 12.3 in.)

14.3 kg (31.5 lbs.)

High Gloss Black, High Gloss White, 5 coats


Supplied Accessories


Yes (10 Meters Nominal)


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3 Years
All REL sub-bass systems carry a three-year warranty covering full parts & labour.

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If you experience any issues with this product please don't hesitate to contact us.
How much does delivery cost?
We offer free post on all orders over $29 to anywhere within the Australian mainland and Tasmania.

Can I pick up my purchase from your store?
Yes. You can usually pick up your order from one of our stores. We recommend that you contact us first to ensure your order is ready for collection.

What happens if I'm not happy with my product when it arrives?
All change of mind returns must be in as new condition, in original packaging. We provide a generous 30-day change-of-mind guarantee on our products (unless otherwise stated). All change of mind returns must be in as new condition, in original packaging.

Please visit our FAQ page for answers to other frequently asked questions or contact us if you have any other questions or comments.