1. Introduktion
This manual provides essential information for the setup, operation, and maintenance of your REL T/7x 8-Inch Powered Subwoofer. The T/7x is a compact sealed design featuring a Class A/B amplifier, RCA inputs, and is engineered to deliver deep bass for HiFi stereo systems, home theater, and surround sound environments. It is designed to seamlessly integrate with your existing audio setup, enhancing both music and movie experiences.

Figur 1: Forside view of the REL T/7x Powered Subwoofer in High Gloss White.
2. Opsætning
2.1 Udpakning og placering
Carefully remove the subwoofer from its packaging. The REL T/7x is designed for optimal performance when placed in a corner of your listening room. This placement utilizes room acoustics to reinforce bass frequencies, providing a more impactful and integrated sound. Experiment with slight adjustments to find the best position for your specific room.

Figure 2: The REL T/7x Subwoofer positioned in a typical home environment.
2.2 Tilslutningsmetoder
The T/7x offers versatile connection options to integrate with various audio systems:
- High-Level Connection: For music systems, use the included 10-meter high-level cable with a Neutrik Speakon Connector. Connect this directly to the speaker output terminals of your main amplifier. This method ensures the subwoofer receives the same sonic signature as your main speakers, leading to seamless integration.
- Low-Level (RCA) Connection: For home theater systems, a single RCA cable (not included) can be used to connect to your receiver's dedicated subwoofer output (LFE channel).
- Samtidig forbindelse: For optimal performance across both music and movies, you can connect both the high-level and low-level inputs simultaneously.

Figure 3: Rear panel connections including High-Level Input and Low-Level Input.
2.3 Optional Wireless Connectivity (Arrow)
The T/7x supports the optional REL Arrow wireless system for convenient placement without long cable runs. This system utilizes zero-compression technology for uncompromised audio quality. Simply plug the Arrow transmitter into your source and the receiver into the subwoofer's dedicated port. No complex app downloads are required for setup.
Video 1: En overview of the REL T/7x Subwoofer, including setup and features. This video demonstrates the physical aspects and connectivity options of the subwoofer.
3. Betjening af subwooferen
3.1 Betjening og justeringer
The REL T/7x features intuitive controls on its rear panel for fine-tuning its performance to your listening environment and preferences. These include:
- Hi/Low Level Control: Adjusts the overall output level of the subwoofer.
- Crossover kontrol: Sets the upper frequency limit at which the subwoofer operates, allowing for seamless blending with your main speakers.
- .1/LFE Level Control: Specifically for the Low-Frequency Effects channel in home theater setups.
- Faseomskifter: Allows you to adjust the phase (0 or 180 degrees) to ensure the subwoofer's output is in sync with your main speakers, preventing cancellation or reinforcement issues.

Figure 4: The front-firing 8-inch driver, designed for precise and impactful bass.
3.2 Driver Technology
The T/7x employs an 8-inch active driver and a 10-inch down-firing passive radiator. This combination provides both quick, agile bass for musical accuracy and deep, floor-rumbling low frequencies for cinematic impact. The active driver features a lightweight, stiffened pressed pulp cone for optimal performance and minimal resonance.
4. Vedligeholdelse
To ensure the longevity and optimal performance of your REL T/7x subwoofer, follow these general maintenance guidelines:
- Rensning: Use a soft, dry cloth to clean the cabinet. For high-gloss finishes, a slightly damp En tør klud kan bruges til at fjerne fingeraftryk eller pletter. Undgå slibende rengøringsmidler eller opløsningsmidler.
- Placering: Ensure the subwoofer is placed on a stable, level surface. The solid billet aluminum feet provide stability and contribute to the sonic tuning of the unit.
- Ventilation: Do not obstruct the heat sink on the rear panel, as proper ventilation is crucial for the amplifier's performance and lifespan.
- Miljøforhold: Avoid exposing the subwoofer to extreme temperatures, humidity, or direct sunlight.

Figure 5: Detail of the solid billet aluminum feet, designed for stability and acoustic performance.
5. Fejlfinding
If you encounter issues with your REL T/7x subwoofer, consider the following common troubleshooting steps:
- Ingen lyd:
- Check all cable connections (power, high-level, low-level) to ensure they are secure.
- Verify the subwoofer is powered on and the power indicator light is active.
- Confirm the source component (receiver, amplifier) is sending an audio signal.
- Adjust the "Hi/Low Level" control on the subwoofer to an audible level.
- Forvrænget eller buldrende lyd:
- Adjust the "Crossover" control to blend more smoothly with your main speakers.
- Experiment with the "Phase" switch (0 or 180 degrees) to find the setting that provides the most coherent bass.
- Slightly adjust the subwoofer's physical position in the room.
- Reduce the "Hi/Low Level" control if the sound is too loud or overpowering.
- Subwoofer Not Integrating with Main Speakers:
- Re-evaluate the "Crossover" and "Phase" settings. Proper adjustment is key to seamless integration.
- Ensure the high-level connection is correctly made to your main ampliferens højttalerterminaler.
For persistent issues, consult the detailed user manual provided with your product or contact REL Acoustics customer support.
6. Specifikationer
| Feature | Specifikation |
|---|---|
| Modelnavn | T/7x |
| Højttaler type | Subwoofer |
| Subwoofer diameter | 8 Inches (Front-firing active driver) |
| Passiv radiator | 10 tommer (nedadrettet) |
| Højttaler Maksimal udgangseffekt | 200 watt (klasse A/B) Amplivligere) |
| Produktdimensioner | 15" D x 12" B x 14.3" H |
| Varens vægt | 36 pund |
| Materiale | Composite (Cabinet) |
| Farve | High Gloss White (also available in High Gloss Black) |
| Forbindelsesteknologi | RCA, High-Level (Neutrik Speakon), Optional Wireless (Arrow) |
| Speciel funktion | Stereo pairing capability |
| Inkluderede komponenter | 10 meter high level cable with Neutrik Speakon Connector, User manual, Power cord |
7. Garanti og support
The REL T/7x Powered Subwoofer comes with a Limited Warranty. For specific terms and conditions, please refer to the warranty card included with your product or visit the official REL Acoustics webwebsted.
For technical support, troubleshooting assistance beyond this manual, or warranty claims, please contact REL Acoustics customer service directly. Contact information can typically be found on the manufacturer's webwebsted eller i produktemballagen.
Note: Protection plans may be available for purchase separately to extend coverage beyond the standard limited warranty.





