Synergistic Research Foundation XL Subwoofer Cable

Synergistic Research Foundation XL Subwoofer Cable Key Features: 

• 33% More Pure Silver AirString Geometries – Enhances resolution, dynamics, and transient response for detailed, lifelike music.
• SRX XL UEF Matrix Shielding with Graphene – Lowers the noise floor while preserving transparency and dynamic range for cleaner, more accurate sound.
• SRX XL High Voltage Conditioning – Improves electron flow at the molecular level, boosting tonal accuracy, dimensionality, and high-frequency clarity.
• Purple and Gold Carbon Tuning Discs – Allow system-specific voicing to optimize harmonic texture, soundstage depth, and musical realism.
• Air Dielectric Suspension – Reduces conductor interaction, ensuring smooth, fatigue-free listening with greater clarity and detail.

Product Description: 

At its core, Foundation XL is a refined, scaled-down version of SRX XL—handmade in Synergistic Research’s California factory using the same core technologies first introduced in the flagship cable loom.

Just as SRX XL evolved from SRX with higher conductor density and advanced treatments, Foundation XL enhances Foundation SX with 33% more pure silver AirString geometries, each suspended in an air dielectric to reduce interaction and improve resolution. The SRX XL UEF Compound is applied to Foundation XL’s matrix shielding to lower the noise floor without limiting dynamics or transparency. Each cable then undergoes the same long-duration, high-frequency conditioning process developed for SRX XL, enhancing dimensionality, tonal accuracy, and high-frequency refinement.

Included with every cable are Purple and Gold UEF Carbon Tuning Discs, allowing users to voice their cables to system and taste—or run them clean.

Foundation XL brings the advanced technologies of SRX XL to the Foundation series, delivering the highest performance-to-price ratio of any cable Synergistic Research has ever produced.

UEF Matrix Shield with Graphene SRX XL Matrix Shielding

In creating the flagship SRX XL series, Synergistic Research developed a new UEF compound that advances its Matrix Shielding technology, reducing the noise floor even further while minimizing the signal constraints typically associated with shielding. This state-of-the-art SRX XL Matrix Shielding is now applied to the Foundation XL line, delivering a substantial performance upgrade over the previous Foundation SX. To further refine musicality, Carbon Fiber UEF Tuning Discs—engineered specifically for both Foundation SX and Foundation XL—enhance noise cancellation, preventing high frequencies from sounding harsh or fatiguing.

Enhanced Cable Geometries—6N Pure Silver Airstrings, Multiplied

While voicing the Foundation XL, Synergistic Research discovered that doubling the 99.9995% pure silver Air Strings produced cables that are quicker and more resolving, with greater texture and body. This refinement enhances dynamics and transient response while preserving a smooth, fatigue-free presentation.

Quantum Tunneling—SRX XL High Voltage Conditioning

The SRX XL High Voltage Conditioning process represents Synergistic Research’s most advanced treatment, applying 1,000,000 volts of electricity at carefully chosen frequencies and pulse modulations over extended durations. This creates pathways within the conductor material and contact points at the molecular level, enabling freer electron flow. Building on the original SRX process, the XL version introduces longer duration sweeping frequency plots and enhancements to the Tesla Coil, resulting in an even more open and accurate sound. Foundation XL cables benefit from this same conditioning method, a key factor in their substantial performance gains and voicing that approaches the flagship SRX XL series.

Included Carbon Tuning Discs—Tune to Perfection

Foundation XL interconnects, speaker cables, and power cables include Carbon Tuning Discs derived from the Atmosphere SX loom where they help define the series’ signature sound. Each disc incorporates patented UEF technology and is treated with a specialized UEF compound that interacts with EM fields to elevate performance. Constructed from conductive carbon fiber, the discs intensify this interaction, further improving system transparency and refinement. Gold Carbon Tuning Discs enrich harmonic texture while adding holographic realism, while Purple Carbon Tuning Discs extend clarity and soundstage openness even further for heightened detail and dimensionality.

Specifications: