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Synergistic Research Foundation XL REL Spec Subwoofer Umbilical
$260.00
Product Details
Synergistic Research Foundation XL REL Spec Subwoofer Umbilical
Foundation XL REL Spec Subwoofer Umbilical daisy-chains one REL subwoofer to another, using Neutrik Speakon connectors at both ends and the same 6N pure silver Air String geometry, SRX XL Matrix Shielding with Graphene, and SRX XL High Voltage Conditioning found in the rest of the Foundation XL line. Included Gold and Purple Carbon Tuning Discs let you voice the cable to your system, or run it clean. As an authorized Synergistic Research dealer in Toronto, Canada, Vinyl Sound can help you connect your REL subwoofer setup with the correct cable and length.
Key Features
- Silver Air Strings, 99.9999% pure monocrystalline silver conductor
- Air (sealed) dielectric
- Silver Braid shield, Quantum Tunneled
- SRX XL Matrix Shielding with Graphene
- SRX XL High Voltage Conditioning treatment
- Included Gold and Purple Carbon Fiber UEF Tuning Discs
- Neutrik Speakon connectors at both ends
Compatibility
This Umbilical is only available with Neutrik Speakon connectors at both ends, making it incompatible with the REL HT series or other subwoofer brands. It is designed specifically to daisy-chain one REL subwoofer to another alongside a Foundation XL REL Spec Subwoofer Cable running from your preamp.
Carbon Tuning Discs
Foundation XL REL Spec Umbilical ships with Carbon Fiber UEF Tuning Discs for further voicing:
- Gold — flesh out rich harmonics with a clarifying effect for a more lifelike, holographic presentation
- Purple — enhanced clarity and soundstage extension beyond what Gold provides
Technical Specifications
| Conductors | Silver Air Strings, 99.9999% pure monocrystalline silver |
| Dielectric | Air (sealed) |
| Shielding | Silver Braid, Quantum Tunneled, SRX XL Matrix Shielding with Graphene |
| Connectors | Neutrik Speakon (both ends) |
| Compatibility | REL subwoofers only — not compatible with REL HT series or other brands |
| Tuning discs included | Gold and Purple Carbon Fiber UEF Tuning Discs |
| Silver solder content | 4% |
| Hand-build time | 2 hours |
| Burn-in | 5-day, 2-step process |
| Standard length | 1 meter (additional length built to order) |
Frequently Asked Questions
Do I need this cable if I only have one REL subwoofer?
No. The Umbilical is only needed when daisy-chaining a second REL subwoofer from the first. A single-subwoofer setup only needs the Foundation XL REL Spec Subwoofer Cable from your preamp.
Will this work with a REL HT Series subwoofer?
No. This Umbilical uses Neutrik Speakon connectors at both ends and is not compatible with the REL HT series or other subwoofer brands.
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