REL Acoustics Serie T/9x 10-Inch Powered Subwoofer in Grey (Each) - T/9X GREY

REL Acoustics T/9X GREY Serie T/9x 10-Inch Powered Subwoofer in Grey (Each)

The REL Acoustics T/9X GREY Serie T/x powered subwoofer combines a built-in 300-watt RMS Class A/B amplifier with a 10 in front-firing FibreAlloy driver, a 10 in down-firing passive radiator and in-room low-frequency extension of -6 dB at 27 Hz. High-level Neutrik Speakon, low-level RCA and separate LFE RCA inputs support stereo music and home theater connections, while optional Arrow wireless compatibility adds an uncompressed connection option with separately purchased hardware. Finished in Grey, this Serie T/x flagship brings expressive dynamics and quick response to musical texture, soundstage detail and cinematic impact.

Key Features

Music and Home Theater in 150-400 Square Foot Rooms

For two-channel listening, the emphasis is on texture, timing and soundstage; for movies, it is on realistic weight and impact without sacrificing speed. Recommended for medium-to-large rooms, typically 150-400 square feet, this single-subwoofer configuration complements high-performance floorstanding speakers, stand-mounted monitors and smaller panel speakers seeking fuller-range sound.

Acoustically Driven Enclosure Design

Additional cabinet volume improves efficiency and output without requiring greater amplifier power. Rounded corners accommodate that acoustic volume while reducing perceived visual bulk, maintaining a clean appearance without unnecessary decoration. The design serves the sound first while remaining visually restrained in a listening space.

10 in FibreAlloy Driver and Passive Radiator

A lightweight FibreAlloy cone and inverted alloy center cap balance responsiveness with stiffness. The front-firing active driver works with a down-firing passive radiator to extend low bass and add scale. Revised suspension and reduced cabinet back pressure provide firmer control, supporting more immediate attack, expressive dynamics and transparency.

300 Watts RMS of Class A/B Power

A substantial power supply and current reserves give musical peaks and cinematic effects dynamic headroom. Revised driver MOSFETs support transparency, while updated toroidal-transformer mounting strengthens the amplifier's mechanical construction. Fast filters, tuning and limiters help preserve the natural, responsive character central to the Serie T/x design.

High-Level Speakon, RCA and LFE Inputs

For stereo integration, the Neutrik Speakon high-level connection takes its signal from the main amplifier's speaker outputs without drawing power from them. Separate low-level RCA and LFE RCA inputs provide alternative connections for stereo and home theater systems. The supplied Neutrik Speakon cable supports a wired high-level setup.

Optional Arrow Wireless

When a long audio cable run is undesirable, the compatible Arrow system offers a wireless signal connection without digital compression, preserving quick response and dynamic expression. Arrow hardware is sold separately rather than included with the subwoofer, and AC power is still required.

Five-Coat Grey Finish

Slightly warmer than neutral, the Grey finish suits traditional as well as contemporary interiors. Cured, hand-sanded layers and final polishing create the high-gloss presentation, with gunmetal grey feet and badging completing the look. This finish retains the standard acoustic platform rather than introducing a different driver configuration.

Features

• Music and Home Theater
  Adds bass support for two-channel recordings and cinematic soundtracks.
• Rounded, Higher-Volume Enclosure
  Acoustic volume and curved corners balance bass output with a restrained appearance.
• 10 in Front-Firing FibreAlloy Driver
  Alloy reinforcement keeps the responsive cone stiff without adding substantial mass.
• 10 in Down-Firing Passive Radiator
  Extends low bass and gives the presentation greater scale.
• Revised Suspension
  Supports decisive attack and dynamics through firmer driver control.
• 300-Watt RMS Class A/B Amplifier
  Built-in amplification supplies current reserves for dynamic music and movie passages.
• Refined Amplifier Construction
  Updated driver MOSFETs and transformer mounting support transparency and mechanical strength.
• High-Level Neutrik Speakon Input
  Use the included Speakon cable to integrate bass with the main speakers.
• Separate RCA and LFE Inputs
  Low-level and LFE connections accommodate additional system arrangements.
• Optional Arrow Wireless Compatibility
  Add the separately sold Arrow system for uncompressed wireless audio.
• Five-Coat Grey Finish
  Polished Grey surfaces pair with gunmetal grey feet and badging.
• Electronic Protection Systems
  Fully Electronic Set Safe, D.C. fault and output-short protection are included.

Footnotes:

Performance figures reflect manufacturer testing under specific conditions and may vary with the room, settings and use.

This subwoofer is not designed for vertical line-array stacking. Do not stack it.