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REL HT1205 500W 12" Subwoofer Gloss Black

Ships in 4 to 7 Days

A REL subwoofer that makes a perfect addition to high-performance home theatre systems. For a dynamic and powerful home theatre experience that is also affordable, look no further than the HT1205, from REL's HT Series.


Rethink What's Possible

HT/1205 home theater subwoofer delivers a brand new 500W Class D power amplifier design, coupled to a 12” (300mm) long travel driver to deliver extremely high output in an attractive design. HT is a powerhouse for dedicated high powered home theater applications, that will also transform the gaming experience and partners nicely with active wireless speakers.

Key Features:
- Closed box, front-firing compact subwoofer delivers a big sound
- A powerhouse when integrated with home theatre systems
- A huge 500W of power from the NextGen5 Class D amplifier
- FItted with a 12” CarbonGlas™ driver made of modern materials
- Extremely true bass right down to the 20Hz range
- Beautifully finished in 5 coats of hand rubbed lacquer
- Compatible with REL's HT-Air wireless transmitter

Performance Home Theatre

REL set out to build the loudest, relatively compact 12” unit available for pure home theater use, and at truly attractive pricing. You’ll be the judge of how well they accomplished that goal, but critics are already lining up for reviews. REL believe the HT/1205 is destined to become a modern classic with svelte cabinet dimensions finished in an attractive, yet purposeful line grained black aluminum-look and topped by a 12mm thick beautifully polished top that serves to damp vibrations on the critical top surface of the cabinet.

For REL owners already enjoying the Reference, Serie S and T/i subwoofers designed for both 2-channel and theater use, the HT/1205 is designed to supplement their system’s .1/LFE output to produce extremely high output for chest rumbling home theater special effects.

Purpose Built - Bring on the special effects.

HT/1205 delivers a tough, simple, purpose-built appearance designed to communicate its sole mission; devastatingly high output home theater. The cabinet’s width is minimized reducing visual mass, whilst depth is maximized to produce the deepest bass. REL selected tough, high-grade, horizontally oriented line-grained composite to wrap the entire cabinet, which offers easily handled, easy cleaning. This more basic design vocabulary differs from the more refined finishes found in the brand's other lines, however the top surface that catches one’s eye is beautifully finished in 5 coats of hand rubbed lacquer, creating the visual appeal they’ve come to be known for.

Size Matters - Twelve-inch CarbonGlas™ driver.

REL’s driver prowess is on full display with the HT/1205, a modern 12” CarbonGlas™ (300mm) driver that is both lightweight and extremely stiff. While many competitors drone along with relatively slow, heavy cones HT/1205’s uses tough, stiff carbon fibre over 60% of the driven surface, backed by lightweight glass fibre. Naturally, REL use true high-quality natural butyl surrounds as they remain soft and pliable for decades—something REL owners have come to expect. HT/1205’s new 12” CarbonGlas driver sets a new standard for affordable, high-performance theater-specific drivers.

500W Amplifier - Warn the neighbors. It's movie night.

500 Watts: To accomplish their single-minded goal of exceedingly high output for large-scale theater applications requires a special amplifier. REL's NextGen5 Class D amplifier frees up interior space whilst running cool; this results in more cabinet volume and that translates into louder and deeper bass. 500 watts means the driver never is allowed to starve for power ensuring a long-running, reliable design. Within HT-1205’s input filter, REL designed in specific inverse filtering to permit our CarbonGlas driver to extend much deeper than traditional designs.

HT-Air - Zero compression wireless compatible.

There is wireless and there is REL wireless. REL is well-known for having the finest wireless purpose-built systems in the component audio world. Though HT-Air™ is affordable, it retains the brand's corporate fixation on zero compression and maximum dynamics. HT-Air is designed to leave old-fashioned Bluetooth-based systems in the dust, delivery latency in the 16-20 millisecond range. This permits you to place your HT model sub wherever it works best for you without resorting to unsightly cables being strewn across the landscape of your living room.

Learn more about the HT-Air Wireless Transmitter here

Positioning Your REL Subwoofer

The correct placement of your REL can drastically enhance its performance and transform your listening experience. So, REL Acoustics created a guide to help you get the most out of your subwoofer and showcase how multiple subwoofers can be used to provide breathtaking 2-channel scores and truly theater-quality 3D sound.

Use the REL Room Setup tool here

From the Serie HT

Serie HT is designed specifically to answer the challenge of creating affordably priced, exceptionally dynamic, pure home theater powered subwoofers. The HT/1205 is the ideal combination of a lightweight, modern 12” CarbonGlas™ (300mm) driver coupled to a powerful 500W Class D amplifier that runs cool, producing extraordinary dynamics. Internally, we developed specially adapted home theater input filters that produce extremely flat bass down to the 20Hz range.

REL Acoustics

"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."

More Information
Model Number HT1205
RRP 1,499.00


Type: Closed box, front-firing driver
Active Driver Size & Material: 12 in., 300mm long-throw, CarbonGlas™ cone structure, inverted carbon fibre dust cap, steel chassis
Low-Frequency Extension: -6dB at 22 Hz

Input Connectors: Dual purpose Low Level stereo RCA or LFE RCA
Output Connectors: Daisy Chain Low Level stereo RCA or LFE RCA

Power Output: 500 watts (RMS)
Amplifier Type: NextGen5 Class D
Wireless Capability: HT Air Wireless (Optional), Zero Compression Single Large Scale Integrated Chip


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: 8 Amp semi delay 230 or 115 volts operation



Dimensions (WxHxD): 376 x 405 x 399 mm
Weight: 17.2 kg
Finish: Line Grained Black Composite

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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.