

Atmosphere SX Reference Rel Spec Subwoofer Cable
Precision Acoustic Engineering
Seamless Interior Integration
Ultra-Clear Sound Performance
Handcrafted Premium Finish
Atmosphere SX REL Spec cables are a surprise breakthrough, much like SR power cords with a fantastic ability to improve nearly all aspects of system performance. Listening notes taken during the development process listed deeper and tighter bass, so much so we were forced to turn down both of subwoofers in our reference system.
Other improvements noted was a significant increase in soundstaging and most shocking, increased air and transparency in the high frequencies as well as a more fleshed out mid-range.
To make this possible, all current SR Technologies are applied, including a new two-stage high voltage treatment process first developed for our World’s Reference Galileo SX cables and Atmosphere X Tuning Modules, used to voice your cable to your system and personal preference. Also present are pure, handmade silver Air String Geometries and our latest Tricon Silver Matrix geometry with Teflon dielectrics.
To improve upon the Atmosphere X Reference Rel Spec even further, connect the attached shield ground to a Synergistic Research Ground Block or just a standard wall outlet. In short, these new REL Spec cables should be at the top of the list to audition for anyone with REL Subwoofers wanting to get maximum performance not only in the lower registers but a complete upgrade to the sound of your system.
Engineered with audiophile-grade components — premium drivers, hand-matched crossovers, and a hardwood enclosure tuned for natural decay. Every cabinet is internally braced and damped to suppress resonance below the threshold of audibility.
- Custom 6.5" mid-bass driver with paper-pulp cone for transient accuracy.
- Soft-dome silk tweeter with neodymium motor for airy, fatigue-free highs.
- Point-to-point hand-wired crossover using silver-foil capacitors.
- Bi-wirable terminals plated in pure copper.
Place each speaker on its dedicated stand, toed-in toward the listening position. The hardwood enclosure resonates in concert with the drivers — a deliberate, musical interaction rather than a flaw to be eliminated.
Connect to a quality amplifier using bi-wired speaker cable for the most transparent presentation. Allow 50–100 hours of break-in for the drivers and crossover capacitors to settle into their final voicing.









