$999 $899

Modulating scale, while never compromising quality, T/7i provides the speed and punch of the T/9i, scaled to integrate seamlessly with more modest yet still highly sophisticated systems.

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Balance Point

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 we upgraded our drivers, we were forced to redesign outward. The lovely cabinets 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.


Outsized Performance


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.


Brains and Brawn

The Power Behind REL

If our driver designers deliver the structure of REL’s sound, the electronics are the brains and the power behind our 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. Our 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.

Standby Mode switch not included on 110V units.


Zero Compression Wireless

Introducing Arrow™

Arrow™ is REL’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.

Customer Reviews

Based on 19 reviews
Seamless sonic integration

Excellent sub pair. The sonic integration is seamless, it feels like it simply extends the frequency response of my S400’s, not calling attention to itself. My previous sub from a well regarded subwoofer online brand would add the bass but not in such an articulate and well integrated way. These REL’s got it. It’s quite magical once setup is accomplished. Setup is not super hard by requires attention. I’ve also customized the high input cable using Canare speaker cable in a shorter length. The rest of the system is all balanced with a Schiit DAC, SS Pre and NC400 monos from Hypex.

Great support crew

I received good support from REL concerning which product to buy and post installation purchase.

Just WOW!

KEF LS50, Schiit Audio Vidar, SMSL SU8 DAC, REL T7-i 'nuff said

Great sub!

Great sub, lots of slam, integrates nicely with main speakers.

Great subwoofer - Integrates well with the existing system

I owned a few subwoofers including Martin Logan, SVS, Paradigm millennium. After talking to different retail HT experts, I bought this based on quality, size, and price. I liked that fact that Amazon offered free return shipping back too. So, I tried it. It worked great with my paradigm floor standing speakers. It produces deep and tight rich sound. I was very impressed with the sound quality. I had to spend some time in fine-tuning, including the placement of the subwoofer. I found out that my room needs a little more powerful subwoofer than what I thought. One small thing I noticed was there was a little dent in the outer finish when I unboxed it (I followed their instruction how to unpack to avoid scratches).

Overall, I liked REL Acoustics T/7i sound quality.


Suggested Retail: $999 $899

Modulating scale, while never compromising quality, T/7i provides the speed and punch of the T/9i, scaled to integrate seamlessly with more modest yet still highly sophisticated systems.



Front-firing active driver, down-firing passive

Active Driver Size & Material

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

Passive Radiator Size & Material

10 in., 250mm long-throw, inverted aluminium dust cap, steel chassis, black cone

Low Frequency Extention

-6dB at 30 Hz

Input Connectors

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

Output Connectors


Power Output

200 Watts (RMS)

Amplifier Type

Class A/B

Wireless Capability

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

Protection System

Fully Electronic Set Safe


D.C. Fault


Output Short


Mains Input Voltage

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


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


W x H x D

12 x 14.3 x 15 in. (305 x 362 x 382 mm)

Net Weight

36 lbs. (16.3 kg)


High Gloss Black, High Gloss White, 5 coats

Supplied Accessories

Mains Lead


Neutrik Speakon

Yes (10 Meters Nominal)



Users Manual


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