The REL T/5x compact powered subwoofer combines a down-firing 8-inch FibreAlloy™ driver with a 125-watt Class A/B amplifier for fast, controlled bass in small to medium rooms. Its closed-box design reaches 32 Hz at -6 dB while maintaining a compact, décor-friendly footprint. High Level Speakon, low-level RCA, dedicated LFE connectivity, and optional REL Arrow wireless compatibility make it equally capable in premium stereo and home theater systems. Finished in five-coat Piano Black or Gloss White lacquer, the T/5x delivers high-performance low-frequency extension without the visual bulk of a traditional large subwoofer.
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REL T/5x Compact Powered Subwoofer

The REL T/5x compact powered subwoofer is engineered to deliver fast, articulate, room-filling bass from an exceptionally discreet enclosure. Designed for small to medium listening spaces, its closed-box architecture uses a down-firing 8-inch (200 mm) long-throw FibreAlloy™ driver to distribute low-frequency energy naturally throughout the room, extending bass response to 32 Hz at -6 dB. A proven 125-watt RMS Class A/B amplifier provides the speed, control, and tonal transparency needed for high-quality two-channel music systems, while a dedicated .1/LFE input adds weight and impact to home theater soundtracks. High Level Neutrik Speakon, low-level RCA, and dedicated LFE RCA connections allow the T/5x to integrate with traditional amplifiers, preamplifiers, powered speakers, and AV systems. Optional REL Arrow wireless compatibility provides additional placement flexibility, while the laminated plywood cabinet, internal bracing, rounded cabinetry, and five-coat Piano Black or Gloss White lacquer finish combine acoustic performance with premium styling.

What It's Good At:

• Powerful bass from a compact cabinet: Reaches down to 32 Hz at -6 dB while maintaining a footprint suited to small and medium rooms.
• High-performance music integration: REL's High Level Speakon connection receives the same signal sent to the main speakers, helping preserve the system's tonal character and timing.
• Music and home theater versatility: Separate High/Low Level and .1/LFE controls support two-channel playback and movie soundtracks in the same system.
• Fast, controlled low-frequency performance: The long-throw 8-inch FibreAlloy™ driver and 125-watt Class A/B amplifier are designed for responsive, articulate bass.
• Flexible placement and installation: The down-firing configuration distributes bass energy throughout the room, while optional REL Arrow wireless compatibility can reduce long cable runs.
• Premium construction and finish: A laminated plywood cabinet, internal bracing, softly rounded styling, and five coats of high-gloss lacquer provide a refined appearance while helping control cabinet resonance.

REL T/5x Full Specifications:

• Manufacturer: REL Acoustics
• Series: Serie T/x
• Model: T/5x
• Product Type: Powered subwoofer / Sub-Bass System
• Enclosure Type: Closed box
• Driver Orientation: Down-firing
• Active Driver: 8 in. (200 mm) long-throw FibreAlloy™ cone
• Driver Construction: Inverted alloy center cap with steel chassis
• Passive Radiator: N/A
• Low-Frequency Extension: -6 dB at 32 Hz
• Power Output: 125 watts RMS
• Amplifier Type: Class A/B
• Gain Control Range: 80 dB
• Phase Control: 0° or 180°
• Crossover Range: Variable 20–120 Hz for High/Low Level operation
• LFE Filtering: Dedicated .1/LFE channel uses a 120 Hz fourth-order filter and bypasses the High/Low Level crossover
• High-Level Input: Neutrik Speakon
• Low-Level Input: (1) RCA
• LFE Input: (1) RCA
• Output Connectors: N/A
• High-Level Input Impedance: 150,000 ohms
• Simultaneous Input Operation: High Level and .1/LFE inputs may be used simultaneously
• Dual Parametric Filter: N/A
• Wireless Capability: Compatible with optional REL Arrow wireless system, sold separately
• Cabinet Construction: Laminated plywood
• Cabinet Bracing: Internal bracing for low resonance
• Finish Options: Piano Black Lacquer or Gloss White Lacquer
• Finish: Five coats of lacquer
• Dimensions (W × H × D): 11.8 × 12 × 12.3 in. (300 × 307 × 313 mm), including feet and rear-panel controls
• Additional Depth with High-Level Connector: 1.75 in. (44.5 mm)
• Net Weight: 31.5 lb. (14.3 kg)
• Shipping Weight: 35.3 lb. (16.0 kg)
• Protection System: Fully electronic SET-SAFE™
• D.C. Fault Protection: Yes
• Output Short Protection: Yes
• Thermal Protection: Yes
• Mains Input Voltage: 220–240 V; 110–120 V for certain markets
• Higher-Voltage Fuse: 1.6 A semi-delay for approximately 220/230 V operation
• Lower-Voltage Fuse: 3.15 A semi-delay for approximately 115/120 V operation
• Standby Mode: Standby switch included on 220 V units only
• Power Switch: Rear-panel On/Off switch
• Power Indicator: Rear-panel power pilot light
• AC Connection: IEC mains socket
• Mains Lead: Included
• Neutrik Speakon Interconnect: Included; 10 m (33 ft. 6 in.) nominal according to the user manual
• User Manual: Included
• Recommended Room Size: Approximately 75–200 sq. ft. for a single T/5x
• Stereo Pair Capability: Yes; two matching T/5x units required for stereo operation

REL T/5x Q&A:

What benefits does the REL T/5x add to a stereo or home audio system?

The T/5x adds fast, clean, tactile low-frequency extension without requiring a large cabinet. Its 8-inch long-throw driver and 125-watt Class A/B amplifier can improve bass depth, scale, clarity, and soundstage in music while adding greater impact to movies.

Is the REL T/5x suitable for both music and home theater?

Yes. The T/5x is designed as a dual-purpose subwoofer with dedicated High/Low Level controls for music and a separate .1/LFE input and level control for home theater use. High Level and LFE connections can be used simultaneously.

Can the T/5x be used with other REL subwoofer models?

Yes. The T/5x can be incorporated into larger REL 3D home theater configurations alongside other REL models. For a true stereo subwoofer pair, two matching T/5x units should be used.

Can the REL T/5x operate wirelessly?

Yes. The T/5x is compatible with the optional REL Arrow wireless system, which is sold separately and provides greater placement flexibility with fewer long signal-cable runs.

What room size is best for the REL T/5x?

REL recommends the T/5x primarily for smaller rooms, typically around 75 to 200 square feet. A stereo pair may be considered when greater coverage and clarity are desired in a somewhat larger space.

Can multiple REL T/5x subwoofers be stacked vertically?

No. REL does not design or recommend the T/5x for vertical line-array stacking. Multiple T/5x units are better suited to stereo-pair or REL 3D system configurations.

What connection options does the REL T/5x provide?

The T/5x includes a High Level Neutrik Speakon input, one low-level RCA input, and one dedicated LFE RCA input. These options support traditional amplifiers, preamplifiers, powered speakers, and AV processors.

What is the benefit of using two T/5x subwoofers as a stereo pair?

A stereo pair is intended primarily to improve clarity rather than simply increase volume. Properly configured matching units can enhance transparency, speed, low-level detail, imaging, and the sense of acoustic space throughout the system.

REL T/5x Downloads:

REL T/5x Manual