REL Acoustics
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Specs
| Type | High level subwoofer connection cable |
| Connection Method | High-level, from main amplifier speaker terminals to REL high-level input |
| Subwoofer Termination | Neutrik Speakon connector |
| Amplifier End | Bare wire / spade style leads for speaker terminals |
| Conductors | Three-conductor (positive left, positive right, ground) |
| Application | Music-focused high-level integration for compatible REL subwoofers |
| Compatibility | REL subwoofers with high-level Speakon input |
| Available Lengths | 3M, 6M, 10M (Naim-compatible versions in 3M and 6M) |
| Amplifier Termination | Gold-plated spade lugs (Naim versions use stackable banana plugs for Naim's flush-mounted chassis banana sockets) |
| Conductor | Slow-drawn, high purity copper, drawn in a nitrogen bath, each conductor Teflon coated on leaving the extrusion die (REL Natural Drawn wire) |
| Solder | Pure silver solder |
| Filter | REL proprietary filter board for improved clarity and control |
| Naim Compatibility | A special circuit built into each NAIM cable replicates this impedance so that it is safe to run Bassline Blue on early NAIMs |
| Warranty | 3-year warranty |
Warranty
Sold as an authorized REL Acoustics dealer by All Elite Audio. New REL Bassline Blue High Level units include the full REL Acoustics manufacturer warranty of 3 years parts and labor for the original owner. Contact us with any setup or service questions.
What's in the Box
- REL Bassline Blue high-level connection cable with Speakon termination
Overview
The REL Acoustics Bassline Blue is an upgraded high-level connection cable designed to link a REL subwoofer to the speaker terminals of your main power amplifier using REL's signature Speakon connector. This high-level method is central to the REL philosophy because it feeds the subwoofer the same full-range signal your speakers receive, so the sub inherits the exact character, voicing and timing of your main amplifier and blends seamlessly for music first.
Where the standard cable supplied with many RELs is capable, the Bassline Blue uses higher grade conductors and construction to lower noise and preserve low level detail and dynamic contrast. The result is a subwoofer that starts and stops with greater precision, integrates more invisibly with the main speakers, and reveals the subtle textures and pitch definition in bass lines rather than just adding weight.
The Bassline Blue is for the listener who has settled on room placement and gain, and now wants to extract the last measure of coherence and speed from their REL installation. It is an ideal upgrade for T/x, S line, Classic, Planar and Black Label owners who connect via the high-level Speakon input.
Key Features
- Upgraded high-level connection cable for REL subwoofers using the signature Speakon connector
- Feeds the full-range amplifier signal so the sub follows the main amp's exact character and timing
- Higher grade conductors for lower noise and improved low-level resolution
- Blends the subwoofer for music first, delivering pitch definition and speed rather than bloat
- Connects to the main power amplifier's speaker terminals at one end and the REL high-level input at the other
- Terminated with a Neutrik style Speakon plug for a secure, correctly oriented connection
- Compatible across the T/x, S, Classic, Planar and Black Label ranges that accept high-level input
- Hand terminated construction consistent with REL's cable quality standards
How the Bassline Blue High Level Compares
REL Bassline Blue High Level vs REL Commodore .1/LFE Subwoofer Cable
The Commodore is a .1/LFE cable intended for the low-level RCA connection used in home theater, carrying the dedicated subwoofer channel from an AV processor. The Bassline Blue instead uses REL's high-level Speakon method, taking signal from the main amplifier so the sub tracks the exact voicing of the system for music. Choose the Commodore for LFE duty and the Bassline Blue for musical high-level integration. See the REL Commodore .1/LFE Subwoofer Cable.
REL Bassline Blue High Level vs REL Bassline Blue Line Array Connectors
The Line Array Connectors are designed for owners stacking multiple RELs in a vertical array, distributing the high-level signal across the stack. The single Bassline Blue cable handles the primary high-level run from amplifier to the first subwoofer. Pair them when building a stereo pair or stacked array; use the Bassline Blue alone for a single subwoofer. See the REL Bassline Blue Line Array Connectors.
REL Bassline Blue High Level vs Audioquest Husky
The Audioquest Husky is an RCA subwoofer interconnect built for low-level and .1/LFE connections with its own conductor geometry and character. The Bassline Blue is purpose-built for REL's high-level Speakon input, feeding the amplifier signal directly for the timing and blend REL is known for. Select based on which input you intend to use on your subwoofer. See the Audioquest Husky.
Works With These REL Subwoofers
The Bassline Blue elevates the high-level connection on any compatible REL. Here are subwoofers across the range that benefit from an upgraded high-level run.
- REL T/7x The T/x line is REL's music-focused mid range and connects primarily via high-level Speakon, so the Bassline Blue directly improves the coherence and detail of a T/7x installation.
- REL T/9x The 10 inch T/9x rewards a cleaner high-level feed with tighter pitch definition and faster transients, making the Bassline Blue a natural refinement.
- REL S/550 The high performance S line resolves more low-level information, so the upgraded conductors of the Bassline Blue help the S/550 blend even more invisibly with your speakers.
- REL Classic 99 The vintage inspired Classic 99 leans on the high-level connection for its musical voicing, and the Bassline Blue preserves that character with lower noise.
- REL Carbon Special As a reference Black Label flagship, the Carbon Special deserves the best high-level feed available so the Bassline Blue can carry the amplifier's full character into the sub.
Frequently Asked Questions
What is the REL Bassline Blue?
It is an upgraded high-level connection cable that links a REL subwoofer to the speaker terminals of your main power amplifier using REL's signature Speakon connector.
How does the high-level connection work?
One end connects to your main amplifier's speaker terminals and the other terminates in a Speakon plug that inserts into the REL high-level input, feeding the sub the same full-range signal your speakers receive.
Why is the high-level method preferred for music?
Because the subwoofer draws its signal from the main amplifier, it inherits that amplifier's exact character and timing, allowing it to blend seamlessly and follow the music rather than just adding low frequency effects.
What does the Bassline Blue improve over the standard cable?
It uses higher grade conductors and construction to lower noise and preserve low-level detail, resulting in tighter, faster, more defined bass and a more invisible blend.
Which RELs is it compatible with?
It works with REL subwoofers that accept a high-level Speakon input, including models across the T/x, S, Classic, Planar and Black Label ranges.
Can I use it for home theater LFE?
The Bassline Blue is a high-level cable. For a dedicated .1/LFE connection from an AV processor you would use the low-level RCA input and a cable such as the REL Commodore.
What connector does it use at the subwoofer end?
It uses a Speakon style connector that locks securely into the REL high-level input.
How does it connect at the amplifier end?
The three conductors attach to the amplifier's speaker terminals, typically positive left, positive right and a ground, following the wiring described in your REL manual.
Will it work with a tube or solid state amplifier?
Yes. The high-level method is compatible with the vast majority of amplifiers. If you have a specific amplifier in mind, contact us and we can confirm the correct wiring approach.
Does using the high-level connection load down my amplifier?
No. The REL high-level input presents a very high impedance so it draws essentially no current from your amplifier, meaning it does not affect the load your speakers present.
Can I run two subwoofers in a stereo pair with this cable?
Each subwoofer needs its own high-level run. For stereo pairs or stacked line arrays, the Bassline Blue Line Array Connectors help distribute the signal across multiple RELs.
Is the Bassline Blue an upgrade over the Commodore?
They serve different purposes. The Commodore is a .1/LFE RCA cable for home theater, while the Bassline Blue is a high-level Speakon cable for musical integration, so the right choice depends on which input you use.
Do I still adjust crossover, gain and phase on the sub?
Yes. The cable carries the signal, but you still set the continuously variable crossover, gain and phase controls on the subwoofer itself for proper room integration.
Does a better cable really make an audible difference?
In a resolving system, the improved conductors can lower noise and better preserve low-level detail, which many listeners hear as tighter timing and a more seamless blend.
Can I use it with a Planar PL series subwoofer?
Yes, the Planar PL series accepts the high-level connection, so the Bassline Blue is an appropriate upgrade for that new design.
How long is the cable?
REL supplies high-level cables in standard lengths suitable for typical installations. Contact us for current length availability for your setup.
Will it work with my S/550 or S/850?
Yes. The high performance S line uses the high-level Speakon connection and benefits from the upgraded conductors of the Bassline Blue.
What is the warranty?
This REL Acoustics cable is covered by a three year parts and labor warranty for the original owner when purchased from an authorized dealer.
Is All Elite Audio an authorized REL dealer?
Yes. All Elite Audio is an authorized REL Acoustics dealer, so your purchase is fully backed by the manufacturer warranty.
Why buy from All Elite Audio?
As an authorized REL Acoustics dealer in Maryland, we offer genuine products with full warranty coverage, expert setup guidance and knowledgeable support for integrating your subwoofer into any music or home theater system.
