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SERIE T/x

T/7x

$1,299

Powerful. Balanced. Beautifully Compact.
T/7x blends speed, punch, and refinement transforming smaller and mid-sized rooms with surprising scale and musical warmth.

Dynamic, controlled bass from a 200-watt Class A/B amplifier
Fast, detailed response from an 8" FibreAlloy driver
Extended presence via a 10" down-firing passive radiator
Ideal for music and theater systems needing agility and clarity

Color:Black

Black
White

Setup:One Subwoofer

Single Subwoofer
Stereo Pair

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3 Year warranty

60 day trial & free return

60 day Price Protection

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T/7x

Single Subwoofer
Black

$1,299

Filtered for Purity

REL’s legendary High Level Input connection and fast filters are a significant chapter in the REL story. Connecting via the speaker outputs of your amplifier without drawing any power from it may seem like magic, but the real magic lies in the way the sound takes on a natural character and blends seamlessly with your speakers. Unique tuning and special limiters means the T/7x sounds fresher, faster and more dynamic than before.

T/7x 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/7x 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.

REL’s legendary High Level Input connection and fast filters are a significant chapter in the REL story. Connecting via the speaker outputs of your amplifier without drawing any power from it may seem like magic, but the real magic lies in the way the sound takes on a natural character and blends seamlessly with your speakers. Unique tuning and special limiters means the T/7x sounds fresher, faster and more dynamic than before. T/7x 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/7...
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Design

Designed to be Better

Many don’t realize the intense connection between performance and design here at REL. Performance is everything to us and it leads to physical design solutions. Thus it is, that our engineers, in recognizing the need for greater cabinet volume to achieve the goals of greater fluidity and power, turn to the designer. He works dimensions to fool the eye into seeing a smaller, more compact footprint, even though cabinet volume increases. Using gently rounded corner radii that allows the eye to flow over and see less visual mass. The result is both modern and clean with no unnecessary adornment.

Driver

Drive On

The 8” long throw active and 10” passive drivers are where T/7x derives its incredible speed and clean finish. A thorough revision of critical suspension components are responsible for the agility and suppleness of T/7x. The T/7x sounds louder and more powerful is expected, but few would predict it also is faster, more reactive and transparent than our prior generation, itself a paragon of virtue. Stiffer suspensions better suited to advanced duty mean not only can each driver trace minute details, but also travel farther and handle more power.

Amplifier

Tried and True Amplifiers

We have retained our signature Class A/B amplifiers used in every generation of Serie T since 2006. Reliability is the key to happy ownership and with some 200,000 and counting of this range leading long happy lives, Serie T/x owners can feel certain of REL’s standard setting reliability. The powerful 200-watt mosfet amplifier used in the T/7x remains an icon of sound and reliability with huge reserves of current. Massive power supplies are used and small upgrades are found everywhere. New driver mosfets that open up performance and transparency and new methods for securing the toroidal transformers mean better performance and superior reliability. The best gets better.

Standby Mode switch is only included on 220V units.

Wireless

Zero Compression Wireless

At REL, we’ve developed a sterling reputation for building the finest sounding, fastest wireless systems available in the industry. REL never rely upon digital compression as it results in thin, lifeless sound. Instead, we have perfected an (optional) Arrow Wireless 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.

Specifications

Technical Specifications

Type

Front-firing active driver, down-firing passive

Active Driver Size & Material

8 in. (200mm) long-throw, FibreAlloy™ cone, inverted alloy centre cap, steel chassis

Passive Radiator Size & Material

10 in. (250mm) long-throw, FibreAlloy cone, inverted alloy centre cap, steel chassis

Low Frequency Extension

-6dB at 30 Hz Low Frequency

Input Connectors

High Level Neutrik Speakon, Low Level (1) RCA, (1) LFE RCA

Output Connectors

N/A

Power Output

200 Watts (RMS)

Amplifier Type

Class A/B

Wireless Capability

REL Arrow (sold separately)

Dual Parametric Filter

N/A

Finish

Piano Black Lacquer, Gloss White Lacquer 5 coats

Protection System

Fully Electronic Set Safe

Yes

D.C. Fault

Yes

Output Short

Yes

Mains Input Voltage

220-240 volts, 110-120 volts for certain markets

Fuses

2 Amp semi delay 230 volts operation, 4 Amp semi delay 115 volts operation

Supplied Accessories

Mains Lead

Yes

Neutrik Speakon

Yes (10 Meters Nominal)

Interconnect

User Manual

Yes

In the interest of product development, REL Acoustics Limited reserve the right to vary these specifications without notice.

Dimensions

DIMS

W x H x D
14.0 x 12.6 x 14.3 in.,
(356 x 320 x 363 mm)

Net Weight

38.5 lbs. (17.5 kg)

Faq

What are the benefits of adding the T/7x to my system?

The REL T/7x is a perfectly balanced blend of speed, nuance, and power—designed to deliver deep, tactile bass with precision. To achieve this, we pair an 8" active driver with a 10" passive radiator and a 200-watt Class A/B amplifier. The result is quick, articulate bass that brings out the best in two-channel systems while offering enough output to elevate modest home theater setups. Its elegant, compact design makes it an ideal choice for refined living spaces.

Is the T/7x good for both music and home theatre systems?

The T/9x delivers fast, natural bass with depth and authority. For music, it enhances texture, timing, and soundstage; for home theater, it adds weight and realism to every scene—all while maintaining the speed and clarity that define REL’s musical approach to low bass.
Yes, the T/7x is phenomenal for both dedicated music systems and mixed-use setups where you listen to music and watch movies on the same system. Every model in the T/x line is a true dual-purpose subwoofer, allowing you to connect in two ways simultaneously—for music and for movies. This is achieved through a dedicated LFE input with its own volume control, separate from the high- and low-level music inputs and controls.

Can T/7x be integrated with other REL subwoofer series?

Yes, the T/7x can be integrated with other REL models. This comes in handy when building a REL 3D set up where you can mix and match different models and pair them with different sets of speakers in your theater set ups. For stereo pairs, two of the same model is required to achieve the stereo effect. In theater setups, it works beautifully alongside other series—such as Serie HT or Serie S to improve impact, clarity, and balance for realism that is sure to make you smile.

Is the T/7x wireless compatible?

Yes, the T/7x is compatible with our Arrow wireless system, which is equipped with all the same inputs found on the rear amplifier panel. Arrow delivers high-performance wireless operation with zero compression and extremely low latency—ideal for subwoofers placed far from your main system or for those seeking a clean, cable-free installation.

What size room is ideal for T/7x?

The T/7x is ideally suited for small to medium-sized rooms, typically between 100 and 300 square feet. It’s powerful enough to fill the space with full-bodied bass, yet agile enough to deliver the speed, definition, and musicality essential for both 2-channel music systems and home theater setups.

Can I stack T/7x subwoofers in a line array?

No, the T/7x is not designed for vertical line array stacking, and we strongly advise against it. However, it excels when used in stereo pairs for music or as part of a REL 3D setup. For vertical stacking applications, consider stepping up to the HT/1510 Predator or our Serie S subwoofers.

Awards & Industry Reviews

“The speed of the Serie T/7x is its outstanding feature. Few do bass depth and bass speed like this subwoofer at anything like the same price, and for that alone it deserves very high praise because that means the REL sub can keep up with fast musical transients played through equally fast and reactive loudspeakers.”

- Hi-Fi +

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"You guys already know about the standout features I love. The polished hardware around the back, around the front, around the radiator, the chassis mounted RCAs, the class A/B amplifier, the super simple setup options and how easy it is to integrate this thing. There are a lot of awesome things I can tell you about the T/7x."

- Nemo Propaganda

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T/7x Subwoofer of the Year

“Few do bass depth and bass speed like this subwoofer at anything like the same price, and for that alone it deserves very high praise because that means the REL sub can keep up with fast musical transients played through equally fast and reactive loudspeakers.”

- Hi-Fi +

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A British Audiophile Highly Recommended

"The REL T/7x clearly demonstrates how the subwoofer game has moved on in the last 20 years, comfortably outperforming my Strata III. It's a lot cleaner, a touch more dynamic while offering similar levels of bass extension to it's ancestor. No small feat for a subwoofer almost half it's size."

- A British Audiophile

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"I think it's designed 75% more for Hifi 2 channel music use, but still has the ability to perform in home cinema. The speed of the T/7x is its outstanding feature. In fact, I don't think I've ever heard a subwoofer like it for a similar price."

- HST Studio

- T/7x HST Studio Review

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2023 Editors' Choice Award

"A special round of applause is due this mini-sub for music lovers. The T/7x is even faster and tighter than its forbear, yet remains tonally supple, with well-defined timbres. It’s also remarkably potent for a single, forward-firing 8” driver augmented by a quick-reacting, downward-firing 10″ passive radiator (and a smooth 200W Class AB amp)."

- The Absolute Sound

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- De Audiofilos y Locos

Read Article

View All Awards & Reviews

View T/7x in Your Space

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What's in the box

Serie T/7x Subwoofer
Grille
6' AC Power Cord
32' Neutrik Speakon cable
User Manual & Warranty information

Download User Manual Download Brochure

The Right REL for You

Specifications will never tell the whole story behind one of our subwoofers, but they can help to clarify the technical difference between them.

SERIE T/x

T/9x

$1,699

W x H x D
14.5 x 13.4 x 15.5 in.,
(370 x 340 x 393 mm)

300 watts (RMS) Class A/B

10 in. (250mm) long-throw, FibreAlloy™ cone, inverted alloy centre cap, steel chassis

-6dB at 27 Hz Low Frequency

SERIE T/x

T/7x

$1,299

W x H x D
14.0 x 12.6 x 14.3 in.,
(356 x 320 x 363 mm)

200 Watts (RMS) Class A/B

10 in. (250mm) long-throw, FibreAlloy cone, inverted alloy centre cap, steel chassis

-6dB at 30 Hz Low Frequency

SERIE HT

HT/1205 MKII

$999

W x H x D
16.25 in. x 15.25 in. x 17.25 in.
(413 x 387 x 438mm)

500 watts (RMS) Class D

-6dB at 22 Hz Low Frequency

Compare More RELs

Overall rating: 4.9905663 / 5 from 106 reviews.

AI Generated Review Summary

The T/7x offers powerful and balanced performance with compact and versatile design. Customers praise its high-level connection, significant sound quality improvement, and exceptional service. The product is noted for its superior build quality, superb sound, and seamless integration into existing setups.

Summary topics

Connection Quality: 7%
Sound Quality Improvement: 9%
Technical Support: 6%
System Enhancement: 10%
Sound Quality: 21%

Review topics: [].

Review highlights

"REL has great products, excellent service, and informative technical help." — The T.
"Would highly recommend this brand to anyone who wants to make their stereo system sound great." — Iain R.
"The sound is just heavenly, the bass integrates seamlessly and can be as loud or quiet as you wish." — Julian K.

Reviews

I am extremely impressed with

"I am extremely impressed with REL from my first contact with REL asking for advice on improving the bass response to my SONY hi-fi system, having given my amp and speaker specs. the advice by (ROD) was to purchase the T/7X after purchasing and recieiving the unit I was very impressed with the follow up from your technical department (BEN) to make sure I was able and avised how b to connect it into my system I have to say the overall performance of the system, not only bass is very impressive I am very happy and impressed with this what a wonderful company to deal with. Thank you REL."

— STEVE O. (5/5)

T/7x

"I researched subs extensively before deciding to buy the T/7x. I’m extremely pleased with it and it works flawlessly with my Linn streamer. It’s beautifully constructed. I received helpful phone call from customer service to check I was happy which gave me the opportunity to ask some questions about set-up. 5 stars for everything!"

— Nicholas B. (5/5)

Amazing subwoofer

"These subs are expensive, but worth it if you care about high quality musical full range sound. As promised, it blends seamlessly with my speakers - you usually can't tell it's on or that the sound is coming from its direction, but there is a beautiful full range sound down to the lowest frequewncies. It's not boomy at all. Works great for TV/Movies as well, but not as big and boomy for movies as other subs. IMO that's a good thing, and is perfect for music. really well built, quality item, with beautiful depth of sound."

— DARYL W. (5/5)

Fine tuning

"I’m using four thin metal washers with two parallel thin ropes of mortite under each foot, much better sounding bass (won’t foul the area rug) then washing machine vibration reducers (too elevated). I have one sub inside the left speaker and slightly in front pointed to the center of the room which improved blending and coherence. I’m still fine tuning the sound but it’s really nice. Wouldn’t mind another one (wireless) next to my listening chair. Using 30hz crossover and 1 o’clock gain currently. Mains are -3 at 48hz but with output into the 20’s according to the manufacturer and 3-4 ft out and 4-5 ft from side walls."

— Damian Z. (5/5)

Perfect match for Cantons

"The black T7X I just got matches the looks of my 1st generation Canton Vento Reference 7 perfectly. I cross it at 30hz with about 10:30 of gain. I needed to put it on washing machine isolators to get the sound right on my suspended floors and it’s on the inside of the left tower about 3 ft from front wall. My speakers have Gaia’s so I kind of expected that. The Doors 1st album was one of the main reasons to buy it. Now it sounds right. I’m having a ball with it. More than enough for my two channel system. Great quality product."

— Damian Z. (5/5)

Awesome product

"Has given my system a useful few hertz of extra bass at the bottom end. Fast and musical, not too shabby for cinema use either! Highly recommended."

— Michael J. (5/5)

Bliss

"This subwoofer adds a whole new layer to what was already an audiophile 2 channel system without muddying up what was already there. Audio gd+Ayre into Thiel+Rel! Acoustical bliss!"

— Jon R. (5/5)

Perfection

"I contacted REL before ordering and it was a great help and such an amazing product."

— Manpreet S. (5/5)

Upgraded to T/7x stereo pair

"I've had an excellent stereo pair of the original T5s running flawlessly in my audio system for almost a dozen years before catching the bug and wanting to push for a bit more. The T5s have been great, but the T/7x pair is a whole different world. They are outstanding and blend perfectly with my audio[phile] system. I could not be happier. A special shout-out and my thanks to Rachel Peck for all her exceptional advice and help."

— Greg P. (5/5)

Perfect integration and fulfilling of expecations

"Paired with Spendor classic bookshelf speakers which have incredible clarity and are spectacular with voices and strings my new Rel T7/X added "body" and pathos to my listening experience. I was skeptic about adding a sub but something was missing and adding a Rel filled that void with perfect integration, in my case Rel is not too fussy about placement all considering, my room set up doesn't allow for maximum flexibility. I am ecstatic about the integration between Rel and Spendor, at the source I have a full set Audiolab 9000 series and Rega Turntable. Thank you"

— Flavio (5/5)