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REL T9i Subwoofer 300W 10" + 10" Dual Driver

In stock
From $2,099

The T9i is the flagship model subwoofer of the Serie T/i range. 

REL has a longstanding tradition of requiring the top model in any range to be more. More than the sum of its parts, it represents the grandest scale, the highest output and the most we can do within any given technology envelope.


REL T9i 300W - The series flagship

The T/9i represents the most of T/i that REL can deliver, and if sheer output alone is a primary requirement for your theater or music system then read no further. The combination of a lightweight, composite 10” driver coupled to a matching 10" T/i passive delivers speed, slam and attack when called upon but also is capable of tracing more delicate passages when necessary.

Large in sonic scale, the T/9i is ideal for mating up with floor standing speakers and rooms that are on the medium-to-large size. Powerful, concussive, yet beautiful.

- Closed Box, Active & Passive Drivers
- 10" Active Driver & 10" Passive Radiator
- 300 Watt Class AB Power Amplifier
- Hi-Level, Lo Level & .1 LFE Inputs
- 28Hz at -6dB in-room frequency response

User Manual (PDF, 1.25MB)

Reimagined, Then Reengineered

The T9i delivers more than just raw output. REL started with driver upgrades and built outward. The lovely cabinets grew by 1.8 kg 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 - Innovative alloy/fibre bass engines

The new composite alloy/fibre engine in T/9i blends precisely the correct dimension of stiffening alloy with a fibre material chosen for its sonic neutrality and low weight. The combination is brilliant; exceeding the performance of competitors’ drivers that are many times more expensive. The forward-firing 10” active couples with a 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.

Great Subs, Great Amps

REL's acclaimed input filters and robust amplifiers result in some of the best sounding, most reliable designs ever produced. High current power supplies, huge toroidal transformers, and what many critics call the best filters in the world produce the famous REL Effect - wherein not simply the bass region but ALL music and movie sound is uplifted and improved.

Optional Accessory - ARROW (Zero Compression Wireless system)

Arrow Zero Compression Wireless: REL are quickly growing into an industry leader in wireless. Following on the heels of the acclaimed LongBow Wireless system, Arrow delivers much of the promise and connectivity of hardwired REL's with the placement flexibility and pure cool factor of great wireless for all of Ti subwoofers. Arrow gives you the ability to place subs in distant corners, along glass walls, or on hardwood floors where a cable would otherwise destroy the effect.

ARROW is an optional accessory, available separately HERE.

Serie T/i

The completely reimagined Serie T/i provides the most power and performance of any subwoofer in its price range. The perfect combination for smaller to mid-sized home theater systems and rooms.

We prefer to refine, to build generationally upon a solid foundation while searching relentlessly for every possible way to legitimately improve upon our past performance. T/i represents a new standard for overall performance in this price category with upgraded drivers, cabinets, amps, and even zero-compression wireless capability when paired with our new Arrow™ wireless system.

More Information
Model Number T9i
RRP 2,099.00


Type: Passive Radiator, front-firing active woofer, down-firing passive radiator
Active Drive Unit: 10in, 254 mm long-throw, inverted dust cap, steel chassis
Passive Radiator: 10in, 254 mm
Lower Frequency Response: 28 Hz at -6 dB in room
Input Connectors: Hi Level Neutrik Speakon, Lo Level single phono, LFE phono
Input Impedance: High Level: 150k, Low Level: 10k, .1/LFE: 10k ohms
Gain Control Range: 80 dB
Power Output: 300 Watts (RMS)
Phase Switch: Yes, 0 or 180 degrees
Amplifier Type: Class AB

Protection System
Fully Electronic SET-SAFE: Yes
D.C. Fault: Yes
Output Short: Yes
Mains Input Voltage: 220-240 volts
Fuses: 3.15 Amp semi delay 230 volts operation, 6.3 Amp semi delay 115 volts operation
Dimensions (WHD): 13 x 15.2 x 16 in, (330 x 387 x 407 mm) Including Feet and Rear Panel Controls (Add 1.75 in (44.5 mm) in depth when using Hi Level connector)
Net Weight: 18.7 kg
Finish: Gloss Black/White

Supplied Accessories
Mains Lead: Yes
Neutrik Speakon Interconnect: Yes (10 Meters Nominal)
Users Manual: Yes

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

To register your REL subwoofer visit the Warranty Registration page at Synergy Audio here.

If you experience any issues with this product please don't hesitate to contact us.
How much does delivery cost?
Nothing! We offer free post on all orders 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?
We offer a 30 day 100% satisfaction guarantee on all of our products! If your order arrives damaged, faulty or not quite as you expected, please contact us and we will do everything we can to fix the situation.

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