The REL T/7x is a compact high-performance subwoofer designed for fast, detailed bass in premium stereo music and home theater systems. Its 8-inch FibreAlloy active driver, 10-inch down-firing passive radiator, and 200-watt RMS Class A/B amplifier deliver deep, articulate low frequencies with impressive speed and control. REL High Level, Low Level RCA, and dedicated LFE inputs provide flexible system integration, while optional REL Arrow wireless compatibility simplifies placement. With elegant five-coat gloss finishes and performance ideal for small to medium rooms, the T/7x combines audiophile-quality bass with a refined, space-friendly design.
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REL T/7x Subwoofer

The REL T/7x is a compact high-fidelity subwoofer engineered to deliver fast, articulate, and powerful low-frequency performance for premium two-channel music systems and home theaters. Its front-firing 8-inch FibreAlloy long-throw active driver works with a 10-inch down-firing passive radiator to produce deep, tuneful bass with excellent speed, texture, and control, while a robust 200-watt RMS Class A/B MOSFET amplifier supplies the current and dynamics needed for demanding music and movie playback. REL’s High Level Neutrik Speakon connection allows the T/7x to receive the same sonic signal as the main speakers for seamless integration, while separate Low Level and dedicated LFE RCA inputs make it equally flexible in stereo and surround-sound systems. A variable 20–120 Hz crossover, independent LFE level control, 0/180-degree phase selection, SET-SAFE electronic protection, and optional REL Arrow wireless compatibility provide extensive setup flexibility. With its rounded, visually compact cabinet, five-coat gloss finish, and performance optimized for small to medium-sized rooms, the T/7x delivers substantial low-frequency scale without dominating the room.

What It's Good At:

• Fast, Musical Bass: The 8-inch FibreAlloy active driver delivers responsive, controlled bass that preserves timing, texture, and detail in music.
• Impressive Output from a Compact Cabinet: A 10-inch down-firing passive radiator extends low-frequency performance while helping the T/7x produce greater scale than its size suggests.
• Seamless Speaker Integration: REL’s High Level connection takes its signal from the amplifier’s speaker outputs, helping preserve the tonal character and timing of the main system.
• Music and Home Theater Flexibility: High Level and dedicated LFE connections can operate simultaneously, supporting optimized playback for both stereo music and movie soundtracks.
• Reliable Class A/B Power: The 200-watt RMS MOSFET amplifier combines strong current delivery with REL’s SET-SAFE protection system for controlled, dependable performance.
• Flexible Placement and Installation: Its compact enclosure, premium gloss finishes, stereo-pair capability, and optional REL Arrow wireless system make it adaptable to a wide range of listening spaces.

REL T/7x Full Specifications:

• Brand: REL Acoustics
• Series: Serie T/x
• Model: T/7x
• Product Type: Powered subwoofer / Sub-Bass System
• Configuration: Front-firing active woofer with down-firing passive radiator
• Active Driver: 8 in. (200 mm) long-throw
• Active Driver Material: FibreAlloy cone
• Active Driver Center Cap: Inverted alloy center cap
• Active Driver Chassis: Steel
• Passive Radiator: 10 in. (250 mm) long-throw
• Passive Radiator Material: FibreAlloy cone
• Passive Radiator Center Cap: Inverted alloy center cap
• Passive Radiator Chassis: Steel
• Low-Frequency Extension / In-Room LF Response: -6 dB at 30 Hz
• Power Output: 200 watts RMS
• Amplifier Type: Class A/B
• Amplifier Technology: MOSFET
• Gain Control Range: 80 dB
• Phase Control: 0 or 180 degrees
• High/Low-Level Crossover Range: 20–120 Hz
• LFE Filtering: Dedicated .1/LFE path with 120 Hz fourth-order filter
• High Level Input: Neutrik Speakon
• Low Level Input: (1) RCA / phono
• LFE Input: (1) RCA
• Output Connectors: None / N/A
• High Level Input Impedance: 150,000 ohms
• Simultaneous Connections: High Level and .1/LFE inputs can be used simultaneously
• Wireless Compatibility: REL Arrow wireless system
• Fully Electronic SET-SAFE Protection: Yes
• D.C. Fault Protection: Yes
• Output Short Protection: Yes
• Thermal Overload Protection: Yes
• Thermal Overload Recovery: Approximately 5 minutes after thermal shutdown
• Mains Input Voltage: 220–240 V; 110–120 V for certain markets
• Standby Mode Switch: Included on 220 V units
• Power Draw When Switched Off at Rear Panel: Zero
• Dimensions (W × H × D): 14.0 × 12.6 × 14.3 in.
• Dimensions Metric: 356 × 320 × 363 mm
• Dimension Measurement: Includes feet and rear-panel controls
• Net Weight: 38.5 lb. (17.5 kg)
• Shipping Weight: 43.0 lb. (19.5 kg)
• Finish Options: Gloss Piano Black / Piano Black Lacquer; Gloss White Lacquer
• Recommended Room Size: Approximately 100–300 sq. ft.
• Available Configurations: Single subwoofer or stereo pair
• Stereo Pair Requirement: Two matching T/7x subwoofers are required for stereo operation
• Vertical Line Array Stacking: Not designed or recommended for vertical stacking
• Supplied Mains Lead: Yes
• AC Power Cord: 6 ft.
• Supplied Neutrik Speakon Interconnect: Yes
• Speakon Cable Length: Approximately 10 m nominal / 33 ft. 6 in.; current product packaging lists approximately 32 ft.
• Grille Included: Yes
• User Manual Included: Yes
• Manufacturer Warranty: 3-year parts and labor warranty for qualifying purchases through REL or authorized dealers
• Typical Initial Run-In Period: Approximately 24 hours of controlled use
• Suggested Single-Sub Placement: Typically in a corner behind the main speakers for efficient low-bass loading

REL T/7x Q&A:

What benefits does the REL T/7x add to a stereo or home theater system?

The T/7x adds deeper, faster, and more tactile bass while helping improve perceived scale, timing, and soundstage. Its combination of an 8-inch active driver, 10-inch passive radiator, and 200-watt Class A/B amplifier provides strong output while retaining the speed and articulation needed for high-quality music reproduction.

Is the REL T/7x suitable for both music and home theater?

Yes. The T/7x is designed as a dual-purpose subwoofer for both two-channel music and movie systems, with separate High/Low Level controls and a dedicated LFE input and level control. High Level and LFE connections can also be used at the same time, allowing the subwoofer to support the main speakers during music playback while handling the dedicated .1 channel for movies.

Can the T/7x be used with other REL subwoofer models?

Yes. The T/7x can be combined with other REL models in multi-subwoofer and REL 3D theater configurations. For a true stereo pair, however, REL specifies using two of the same model.

Can the REL T/7x operate wirelessly?

Yes. The T/7x is compatible with the optional REL Arrow wireless system, which is sold separately and is designed to provide uncompressed, low-latency wireless signal transmission.

What room size is best suited to the T/7x?

REL recommends the T/7x primarily for small to medium-sized rooms, typically around 100 to 300 square feet. It combines enough output to energize these spaces with the speed and definition needed for detailed music and home-theater playback.

Can multiple T/7x subwoofers be vertically stacked as a line array?

No. The T/7x is not designed for vertical line-array stacking. It is better suited to use as a single subwoofer, a matching stereo pair, or as part of a multi-subwoofer REL 3D system.

What connection options does the T/7x provide?

The T/7x includes REL’s High Level Neutrik Speakon input, one Low Level RCA input, and one dedicated LFE RCA input. This allows it to integrate with conventional stereo amplifiers, preamplifiers, powered-speaker systems, and surround-sound processors.

Can the High Level and LFE inputs be used at the same time?

Yes. The High Level and .1/LFE inputs can operate simultaneously, which is especially useful in mixed music and home-theater systems. The High Level connection can support the main speakers while the dedicated LFE input reproduces the movie soundtrack’s .1 channel independently.

REL T/7x Downloads:

REL T/7x Manual