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REL T-ZERO MkIII 100W 6.5" Subwoofer

In stock
From $899

100% REL, Just Smaller

The T-Zero MKIII is every bit a true REL, just smaller. It enriches even modest systems with power and natural bass by bringing the quality and full REL connectivity suite along with an all-new aluminium cone that provides much greater stiffness to the driver for punch and a powerful, reliable Class D amplifier, all at an attractive price point and size. Ideal for apartments, flats, studies, anywhere space is limited.


 "The Verdict"

"REL claims that the T Zero is, in many ways, the most challenging design it has ever produced due to its very diminutive dimensions. I can't help but agree with this, as it's almost counterintuitively effective despite its tiny size. This makes it a great first subwoofer, particularly if you have a small listening space and/or bookshelf speakers. Whatever your philosophical position on subwoofers is, it's hard to argue against the value for money."

Read the full review on StereoNET

REL T-ZERO MkIII - Miracle In Miniature

T-Zero is, in many ways, the most difficult design REL have ever executed because never before have they delivered so much for so little. Five coats of your choice of black or white high gloss lacquer as in all Serie T, NextGen Class D amplifiers, their famous High-Level Input, plus a separate .1/LFE input stage with its own volume control to get theatre levels AND music perfect without racing to adjust or looking for a remote control.

The jewel of the MKIII is the new aluminium-coned driver, a rugged 6.5” unit with exceptional output and low bass extension for its size. While it won’t drive medium or large rooms hard, we make plenty of larger models that handle that task, T-Zero MKIII remains a miracle in miniature

Key Features:
- An evolution of the popular T-Zero
- Closed box, down-firing compact subwoofer delivers a big sound
- 100W RMS of power from the updated Class D amplifier
- 6.5" long-throw active driver for room-filling sound
- New aluminium-coned driver
- In-room frequency response down to -6dB at 37Hz
- High-level, Low-level, & LFE inputs
- Finished with 5 coats of high-gloss black or white lacquer 

REL Acoustics T Zero MkIII Subwoofer Review

"You'll likely want to turn up the bass controls and crossover adjustment to explore what it will do. The answer is a lot – indeed, it can supply almost comedic levels of low frequencies. This done, you'll start edging things back to get it to work with your existing loudspeakers in your room. The permutations are endless, which is why this is such a versatile product."

Read the full review on StereoNET


Scaled for the Simple Life - Compact Power & Finesse

At REL every design begins by defining and designing the best bass engine for a given application. With its new aluminium-coned long-throw 6.5” driver, the MKIII is powerful and articulate, delivering surprisingly deep bass. Able to fill smaller spaces effortlessly.

Outsized Performance - 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 their 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.

Brains & Brawn - Right sized power & control

Though T-Zero MKIII is REL’s entry level sub, that doesn’t mean it can’t punch far above its weight class. 100 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.

The T-Zero MkIII features the same high-quality input filters, crossovers and limiters as REL's larger models. T-Zero MkIII includes a full REL connectivity suite, fast 8ms delay filter set and our famed High-Level Input as well as a separate .1/LFE input with its own level control and a standby circuit that reliably comes alive at very low levels.

Serie T

Serie T enriches even modest systems with power and natural bass, bringing the quality and full REL connectivity suite, long throw drivers and powerful, reliable amplifiers to a new lower price point and dimension.

T-Zero is every bit a REL, just designed to enhance the soundstage in the unique spaces we live. We started with the end-user in mind, taking into account the challenges and opportunities smaller studios or apartments and studies or home offices present. T-Zero reflect this end-use design, providing the fast, deep, substantive bass RELs are renowned for producing in a form that doesn't just accommodate these spaces, but leverages their unique qualities

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-ZERO MKIII
RRP 849.00

Closed Box, down-firing driver

6.5in., 165mm long-throw, steel chassis

-6dB at 37 Hz

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

100 watts (RMS)

Class D


Protection System




100-240 volts

2.00 Amp semi delay



Dimensions W X H X D
216 x 241 x 260 mm

6.8 kg

High Gloss Black, High Gloss White, 5 coats


Supplied Accessories


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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.