REL Acoustics HT/1205 MKII

Overview

The REL Acoustics HT/1205 MKII is a 12 inch active subwoofer from REL's HT line, a range engineered from the ground up to deliver the visceral low frequency impact that modern home theater demands. Where REL's music focused subwoofers chase timing and blend, the HT line prioritizes output, extension and control so explosions, rumbles and deep sound design land with authority in medium to large rooms.

At its core sits a long throw 12 inch forward firing driver driven by a powerful Class D amplifier, tuned to move a large volume of air with speed and composure. Connection is optimized for cinema use through the dedicated .1/LFE input, letting the sub take a clean, level controlled feed directly from an AV receiver or processor. Continuously variable crossover, gain and phase controls make integration with your existing main speakers straightforward, and the HT/1205 MKII is fully compatible with REL's HT-Air MKII wireless system for a tidy, cable free placement.

This subwoofer is for the listener building or upgrading a dedicated home theater or a serious multipurpose room, someone who wants deep, dynamic bass that stays clean at high volume. It pairs naturally with a wide range of main speakers and is often run in pairs to smooth room response and double the available headroom.

Key Features

• 12 inch long throw forward firing active driver engineered for high output home theater bass
• Powerful Class D amplifier delivering deep, dynamic low frequency impact with control
• Dedicated .1/LFE input for clean, level controlled connection to an AV receiver or processor
• Continuously variable crossover, gain and phase controls for precise integration
• Compatible with the REL HT-Air MKII wireless system for cable free placement
• Optimized specifically for cinema and multichannel use within REL's HT line
• Can be run in stereo pairs to smooth room response and increase headroom
• Sealed, rigid cabinet with a durable finish designed for demanding theater duty

How the HT/1205 Compares

REL HT/1205 vs REL HT/1510 Predator

The HT/1510 Predator sits above the HT/1205 MKII in REL's home theater range, stepping up to a 15 inch driver and a larger amplifier for greater ultimate output and extension. Choose the Predator for very large rooms or reference level demands where maximum air movement matters most. The HT/1205 MKII is the more compact and room friendly choice for medium to large theaters that still want serious impact. See the REL HT/1510 Predator.

REL HT/1205 vs REL HT/1003 MKII

The HT/1003 MKII is the step down model with a 10 inch driver, ideal for small to medium rooms and tighter placements. The HT/1205 MKII moves more air with its larger 12 inch driver, giving deeper reach and more headroom in bigger spaces. Both share the HT line's cinema first tuning and .1/LFE connection philosophy. See the REL HT/1003 MKII.

REL HT/1205 vs REL Classic 99

The Classic 99 is a vintage inspired 12 inch audiophile subwoofer tuned first for music, featuring REL's signature high level Speakon connection so it follows the character and timing of your main amplifier. The HT/1205 MKII, by contrast, is engineered for home theater output and connects primarily through its .1/LFE input. Pick the Classic 99 for a music led two channel system and the HT/1205 MKII for a cinema focused room. See the REL Classic 99.

Recommended System Pairings

A subwoofer joins an existing system, so these picks cover main speakers to sit above it, an amplifier to drive them, and REL's own wireless and cable options for a clean install.

• MoFi SourcePoint 8 Center Channel A dedicated center channel anchors dialogue in a home theater, letting the HT/1205 MKII handle the deep effects below the front stage for a cohesive cinema presentation.
• Mission 750 Bookshelf Loudspeakers Compact bookshelf mains that benefit greatly from a capable subwoofer underneath them, so the HT/1205 MKII fills in the low frequency foundation they cannot reach on their own.
• Audiolab 6000A MKII Integrated Amplifier A clean, capable integrated to drive your main speakers with headroom to spare, pairing tidily in a multipurpose room where the HT/1205 MKII supplies the deep bass.
• REL HT-Air MKII Wireless The HT/1205 MKII is compatible with this wireless system, allowing flexible sub placement without running a long cable across the room.
• REL Commander .1/LFE Cable A quality .1/LFE cable to feed the HT/1205 MKII from your AV receiver or processor, ideal for a wired cinema connection.

Frequently Asked Questions

What is the REL HT/1205 MKII designed for?
It is a 12 inch active subwoofer from REL's HT line, engineered specifically for home theater to deliver deep, dynamic low frequency effects with control and high output.

How large a room does the HT/1205 MKII suit?
Its 12 inch driver and powerful amplifier make it well suited to medium and large home theater rooms where serious impact is required.

How does the HT/1205 MKII connect to my system?
It uses a dedicated .1/LFE input to take a clean, level controlled feed directly from an AV receiver or surround processor.

Does it have REL's high level Speakon connection?
The HT line is optimized for home theater through the .1/LFE input. REL's high level Speakon connection is the signature approach on the music focused T/x, S and Classic lines.

Can I run two HT/1205 MKII subwoofers together?
Yes. Running REL subwoofers in a stereo pair helps smooth room response and effectively doubles the available headroom, which is a common approach in dedicated theaters.

What amplifier does the HT/1205 MKII use?
It is powered by an on-board Class D amplifier chosen for its efficiency and ability to drive the long throw driver with authority.

Can I use it wirelessly?
Yes, it is compatible with the REL HT-Air MKII wireless system for flexible, cable free placement in the room.

What controls does it offer?
It provides continuously variable crossover, gain and phase controls so you can integrate it precisely with your main speakers and room.

What is the driver configuration?
It features a single 12 inch long throw, forward firing active driver designed to move a large volume of air quickly.

Will it work for music as well as movies?
The HT line is tuned first for cinema output. It can support music in a multipurpose room, though REL's T/x, S and Classic lines are the music first designs.

How does the HT/1205 MKII compare to the HT/1510 Predator?
The Predator steps up to a 15 inch driver and larger amplifier for very large rooms and reference demands, while the HT/1205 MKII is a more compact 12 inch solution for medium to large theaters.

How does it compare to the HT/1003 MKII?
The HT/1003 MKII uses a 10 inch driver for smaller rooms, while the HT/1205 MKII moves more air with its 12 inch driver for deeper reach and more headroom in larger spaces.

What finish is available?
It is offered in a durable high gloss black finish suited to a home theater environment.

Do I need a wireless kit or can I hard wire it?
You can hard wire it using a .1/LFE cable such as the REL Commander, or add the HT-Air MKII wireless system if you prefer a cable free connection.

Which cable should I use for the .1/LFE connection?
The REL Commander .1/LFE cable is a strong match for feeding this subwoofer from an AV receiver or processor.

Can it be placed in a corner?
Yes. Corner placement can reinforce low frequency output, and the variable phase and crossover controls help you dial in a smooth blend from wherever it is positioned.

What main speakers pair well with it?
It complements a wide range of speakers, from compact bookshelf models to a full home theater array, filling in the deep bass they cannot reproduce on their own.

Is professional setup required?
Setup is straightforward with the on-board controls, though careful placement and level matching will get the best blend with your room and main speakers.

What warranty does the HT/1205 MKII carry?
REL Acoustics provides a parts and labor warranty for the original owner when purchased through an authorized dealer.

Why buy from All Elite Audio?
All Elite Audio is an authorized REL Acoustics dealer, so your subwoofer arrives new with full factory warranty and expert support. We help you choose the right sub, integrate it correctly and get the most from your system.