REL Acoustics Serie T/9x 10-Inch Powered Subwoofer in Piano Black Lacquer (Each) - T/9X BLACK

REL Acoustics T/9X BLACK Serie T/9x 10-Inch Powered Subwoofer in Piano Black Lacquer (Each)

The REL Acoustics T/9X BLACK Serie T/x powered subwoofer combines a built-in 300-watt RMS Class A/B amplifier, a 10 in. front-firing FibreAlloy active driver and a 10 in. down-firing passive radiator for stereo music and home theater. In-room low-frequency extension reaches 27 Hz at -6 dB, while High Level Neutrik Speakon, low-level RCA and dedicated LFE RCA inputs provide stereo and AV connection options. Finished in Piano Black Lacquer, this single-subwoofer configuration brings the Serie T/x flagship's emphasis on dynamic scale, responsiveness and clear musical detail to an existing speaker system.

Key Features

Piano Black Lacquer and a Purposeful Enclosure

Five coats of Piano Black Lacquer give the cabinet its high-gloss appearance, while gently rounded corners soften its visual presence. The enclosure changes serve the sound, too: greater internal acoustic volume improves efficiency and reduces back pressure, allowing firmer suspension control without increasing amplifier output.

10 in. FibreAlloy Driver and Passive Radiator

The long-throw active driver pairs a lightweight FibreAlloy cone with an inverted aluminum center cap that adds stiffness with little extra mass. Revised suspension supports attack and dynamic expression, helping retain detail as the music gains scale. Beneath the cabinet, the down-firing passive radiator contributes low-frequency depth; it is not a second amplified driver.

300-Watt RMS Class A/B Amplification

A built-in MOSFET amplifier combines generous current reserves with a substantial power supply to support expressive musical passages and cinematic impact. Revised driver MOSFETs and toroidal-transformer mounting refine the amplifier's performance and mechanical strength, keeping the focus on dynamic headroom for both listening roles.

High Level, RCA and LFE System Integration

The High Level Neutrik Speakon connection takes its signal from the main amplifier's speaker outputs without drawing power from that amplifier. A Neutrik Speakon cable is included for this connection. Low-level RCA provides another music-system input, and a dedicated LFE RCA input accommodates home-theater use. When planning placement with the high-level connector, allow an extra 1.75 in. of depth.

Manual Gain and Phase Adjustment

An 80 dB gain control range lets you adjust bass level, while the phase switch offers 0 or 180 degrees for integration with the main speakers. Fast filters, tailored tuning and special limiters support responsive bass and dynamic presentation as part of the subwoofer's engineering.

Optional Arrow Wireless Connection

For longer signal-cable routes or fewer visible cables, the compatible Arrow system provides uncompressed, very-low-latency wireless operation. This requires a separately purchased wireless system; no wireless transmitter or receiver is included. The subwoofer still needs its AC power connection, and an AC power cord is supplied.

Guidance for Medium-to-Large Rooms

REL Acoustics recommends rooms typically measuring 150-400 square feet for two-channel music or theater listening. The intended speaker partners include premium floorstanding speakers, stand-mounted monitors and smaller panel speakers, making this a fuller-range upgrade for an established listening system rather than a replacement for its main speakers.

Stereo-Pair and REL Acoustics 3D Expansion

Start with the supplied single subwoofer, or plan a matching two-subwoofer stereo setup with a second unit purchased separately. Two matching models are required for the described stereo-pair effect. REL Acoustics 3D theater installations can instead combine different models, including models from Serie HT or Serie S.

Features

• Five-Coat Piano Black Lacquer
  A high-gloss finish and rounded corners give the enclosure a restrained, modern appearance.
• Revised Cabinet Volume and Suspension
  Additional acoustic volume reduces back pressure for firmer driver control.
• 10 in. Long-Throw FibreAlloy Active Driver
  A lightweight cone and stiffening alloy cap support responsive front-firing bass.
• 10 in. Passive Radiator
  The down-firing radiator supports in-room low-frequency extension of 27 Hz at -6 dB.
• 300 Watts RMS Class A/B Power
  Built-in MOSFET amplification supplies bass headroom for music and movie playback.
• High Level Neutrik Speakon Input
  The included Speakon cable connects to the main amplifier's speaker outputs.
• Low-Level RCA and Dedicated LFE RCA
  Separate input options accommodate music-system and home-theater connections.
• Fast Filters and Special Limiters
  Tailored tuning supports natural system integration and expressive dynamics.
• 80 dB Gain Range and Selectable Phase
  Adjust bass level and select 0 or 180 degrees of phase.
• Optional Arrow Wireless
  Add the separately sold system to reduce visible signal cabling without digital compression.
• Stereo-Pair and REL Acoustics 3D Compatibility
  Expand with a matching stereo partner or compatible mixed-model theater configuration.
• Electronic Protection Systems
  Fully Electronic Set Safe, D.C. Fault and Output Short protection are included.

Footnotes:

Measured performance figures come from manufacturer testing under specific conditions and vary with the room, settings and use.

Do not attempt vertical line-array stacking; this subwoofer is not designed for it.