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Authorized dealers for REL Acoustics T/9x SE

  • The ASOC Gallery of Fine Audio — in-store — Stratford, Ontario, Canada (website)
  • The Music Room — online and in-store — Erie, Colorado, United States (website)
  • 110Hz — online and in-store — Kielce, Województwo świętokrzyskie, Poland (website)
  • 3mA Audio — online and in-store — Houston, Texas, United States (website)
  • Abt Electronics — online and in-store — Glenview, Illinois, United States (website)
  • Acoustic Streams — in-store — Lower Drift, England, United Kingdom (website)
  • Acoustica — online and in-store — Chester, England, United Kingdom (website)
  • All Elite Audio — online and in-store — Perry Hall, Maryland, United States (website)
  • Alta Fedelta — online and in-store — Lombardia, Italy (website)
  • American Sound — in-store — Richmond Hill, Ontario, Canada (website)

and 239 more verified dealers

REL Acoustics T/9x SE #1
REL Acoustics T/9x SE variant 1
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REL Acoustics T/9x SE

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The REL T/9x SE delivers fast, articulate bass with the rare ability to disappear into a stereo system. Hi-Fi Choice heard commanding scale and punch, while Audiograde praised its accurate timing and natural blend. Carbon-fibre upgrades, room-pressurising weight and a sumptuous lacquer finish make this a distinctive music-first subwoofer.

View at REL Acoustics
Specifications7 reviews & sources

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91/100
Rating for T/9x SE

Deliciously Crispy

Bass

91/100

Integration

95/100

Dynamics

90/100

Build Quality

93/100

Features Usability

79/100

Value for Money

93/100

Pros

Fast, detailed and weighty bass with strong leading-edge punch and impressive room-filling scale.

Integrates exceptionally seamlessly with main speakers, avoiding sluggishness and overhang when carefully set up.

Premium, eye-catching construction, with a robust cabinet and meticulous high-gloss special-edition finish.

Cons

Manual analogue setup takes patience and experience; there is no app or remote control for convenient adjustment.

No DSP or EQ, and the passive radiator can sound slightly less dynamically free on some material.

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What Reviewers Are Saying

"The T9x did this better than any subwoofer I have heard anywhere around its price."

— The Sound Advocate

Assessments of Build Quality, Usability, and Overall Propositions.

Bass

91/100

Reviewers describe the T/9x SE as rich, deep and weighty, with impressive scale and a strong sense of body. Audiograde heard tremendous power and greater-than-expected weight on orchestral low notes, while Hi-Fi Choice praised its fast drum transients and room-filling depth. It does not reach true infrasonic territory, but its 27Hz-class extension is used very effectively for music and typical living rooms.

Integration

95/100

This is a standout strength. Audiograde found the sub seamlessly integrated with the main speakers, with no sluggishness or overhang, while Hi-Fi Choice calls seamless integration into the mix one of its real sonic strengths. The related T/9x review from The Sound Advocate says it disappears into the system when correctly set up, filling out the main speakers' bottom octaves without drawing attention to itself.

Dynamics

90/100

The lighter carbon-fibre attack driver is consistently associated with speed, punch and accurate timing. Hi-Fi Choice heard a solid leading-edge impact and exceptional room pressurisation in a 24m² room, and Audiograde found the presentation fast and lively. Hi-Fi Choice also notes that the passive radiator can make output feel slightly pudgier and somewhat held back dynamically on certain material.

Build Quality

93/100

The cabinet and finish attract unusually strong praise. Audiograde calls the construction exquisite and highlights REL's meticulous multi-layer gloss finish, while Hi-Fi Choice describes a hefty, braced MDF enclosure with premium carbon and chrome details. The seven-coat Italian Racing Red lacquer and substantial feet give the SE a notably upscale physical presence.

Features Usability

79/100

The T/9x SE offers practical high-level Speakon, line-level RCA and dedicated LFE inputs, plus straightforward analogue level, crossover and phase controls. This makes it flexible for stereo and home-cinema systems, and the optional Arrow system adds wireless capability. However, Hi-Fi Choice points out that there is no DSP, EQ or app control, so setup is more hands-on than with many modern alternatives.

Value for Money

93/100

Reviewers see the SE premium as well justified: Audiograde considers the £150 increase reasonable for the stronger attack, output-efficiency improvements and special finish, and gives it a top recommendation at its price. Hi-Fi Choice also positions it as a compact alternative to REL's well-regarded Carbon Special at less than half that model's price. The standard T/9x was described by The Sound Advocate as outperforming competing subwoofers around its asking price.

Reviews & Sources

Professional reviews and sources for this product's Watt'n Potatoes analysis.

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Specifications

Type
Front-firing active driver, down-firing passive radiator
Active Driver Size & Material
10 in. (250mm) long-throw, FibreCarbon™ cone, inverted Carbon Fibre centre cap, steel chassis
Passive Radiator Size & Material
10 in. (250mm) long-throw, FibreAlloy™ cone, inverted alloy centre cap, steel chassis
Low Frequency Extension
-6 dB at 27Hz Low Frequency
Input Connectors
High Level Neutrik Speakon, (1) Low Level RCA,(1) LFE RCA
Output Connectors
N/A
Power Output
300 watts (RMS)
Amplifier Type
Class A/B
Wireless Capability
REL Arrow system [required]. Sold separately
Dual Parametric Filter
No
Finish
Italian Racing Red Lacquer, 7 coats
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
3.15 Amp semi delay 220 volts operation. 7 Amp semi delay 120 volts operation
Mains Lead
Yes
Neutrik Speakon
10 Meters (33’6”) Nominal
Interconnect
-
User Manual
Yes
DIMS
W x H x D 14.5 x 13.4 x 15.5 in., (370 x 340 x 393 mm) Add 1.75in (44.5mm) in depth when using Hi Level connector Shipping DIMS W x H x D 20 x 18 x 18 in., (506 x 460 x 465 mm)
Net Weight
45.5 lbs. (20.6 kg). Shipping weight 50 lbs. (23 kg)
Subwoofer Output

Manufacturer's Description — REL Acoustics

Elevated Design. Enhanced Performance. Pure Sonic Refinement.T/9x SE is the pinnacle of the T/x line, crafted for greater clarity, richer dynamics, and a striking visual presence that elevates any system.


  • Natural, expressive bass from a 300-watt Class A/B amplifier
  • Faster, more detailed performance from a 10" FibreCarbon driver
  • Extended depth via a 10" down-firing passive radiator
  • Perfect for premium stereo and home-theater systems

Bold Design, Powerful Bass.

T/9x SE

Embracing the vibrant allure of French Racing Blue, Green With Envy™, Italian Racing Red, Tangerine Dream, and Le Mon™ Yellow, the T/9x SE subwoofers stand out not merely as audio equipment but as a testament to the fusion of aesthetic elegance and acoustic mastery. As part of REL's illustrious lineage, these models represent a distinctive blend of sound engineering and design flair. Every detail, from meticulous craftsmanship to advanced performance features, resonates with luxury and sophistication. Whether you're an audiophile, a design aficionado, or someone who appreciates the sublime, the T/9x SE subwoofers deliver an auditory experience as profound and captivating as their visual appeal. Secure your T/9x Special Edition subwoofers today and immerse yourself in a sonic masterpiece.


Embracing the vibrant allure of French Racing Blue, Green With Envy™, Italian Racing Red, Tangerine Dream, and Le Mon™ Yellow, the T/9x SE subwoofers stand out not merely as audio equipment but as a testament to the fusion of aesthetic elegance and acoustic mastery. As part of REL's illustrious lineage, these models represent a distinctive blend of sound engineering and design flair. Every detail, from meticulous craftsmanship to advanced performance features, resonates with luxury and sophistication. Whether you're an audiophile, a design aficionado, or someone who appreciates the sublime, the T/9x SE subwoofers deliver an auditory experience as profound and captivating as their visual appeal. Secure your T/9x Special Edition subwoofers today and immerse yourself in a sonic masterpiece.


Masterfully Crafted to Mesmerize

Every T/x model boasts sleek, radiused designs and impeccable craftsmanship. But with the T/9x Special Edition, we’ve taken it a step further. It's the subtle details that elevates these models—the badge atop takes three days to perfect, and each solid billet aluminium foot undergoes a three-day chroming process. We meticulously layer copper, nickel, and chrome, allowing each coat a day to set before adding the next. This is the kind of attention to detail that makes REL stand out.


The Heartbeat of Every REL

A REL's essence lies in its driver, and we dedicate immense care and expertise to its design and refinement. The T/9x’s driver is no exception. We've upgraded its critical center cap with carbon fibre, enhancing its stiffness for better bass articulation. By reducing its weight by 10 grams, we've achieved a faster response, and a notable 1.2 dB increase in output, making the T/9x faster, more dynamic, and just a skosh louder.


Amplified Emotion

T/9x's amplifier embodies power and precision with its 300-watt Class A/B monoblock design. Using reliable mosfet designs with integrated heat sinks, these amplifiers have been the driving force behind the Serie T flagships since 2007. With nearly 90,000 units in circulation—most in daily use—we take immense pride in their performance and dependability.

The streamlined 8s input filters ensure a seamless blend between the subwoofer and speaker. With straightforward rotary analog controls for gain, crossover, and LFE Gain, and an intuitive 0–180-degree phase switch, setting up your REL is straightforward and hassle-free. No misplaced remote controls or complicated apps—just timeless, dependable engineering.

Standby Mode switch is only included on 220V units.


Wireless That Doesn’t Compress the Sound

At REL, we’ve developed a sterling reputation for building the finest sounding, fastest wireless systems available in the industry. We never rely upon digital compression as it results in dull, 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 conventionally with cable.


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Verified Dealers

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Authorized dealers for REL Acoustics T/9x SE

  • The ASOC Gallery of Fine Audio — in-store — Stratford, Ontario, Canada (website)
  • The Music Room — online and in-store — Erie, Colorado, United States (website)
  • 110Hz — online and in-store — Kielce, Województwo świętokrzyskie, Poland (website)
  • 3mA Audio — online and in-store — Houston, Texas, United States (website)
  • Abt Electronics — online and in-store — Glenview, Illinois, United States (website)
  • Acoustic Streams — in-store — Lower Drift, England, United Kingdom (website)
  • Acoustica — online and in-store — Chester, England, United Kingdom (website)
  • All Elite Audio — online and in-store — Perry Hall, Maryland, United States (website)
  • Alta Fedelta — online and in-store — Lombardia, Italy (website)
  • American Sound — in-store — Richmond Hill, Ontario, Canada (website)

and 239 more verified dealers