Furutech Jumperflux Speaker Jumper Cables

Description

Many loudspeakers are supplied with jumper plates or basic wire links to bridge the HF and LF terminals when you’re not bi-wiring. They work—but in a high-resolution system, that small piece of metal/wire becomes a meaningful part of the signal path. Furutech built the Jumperflux series for listeners who refuse to leave performance on the table at the speaker terminals, where current delivery, contact integrity, and mechanical stability all directly influence perceived clarity, bass definition, and image focus.

Why premium jumpers matter in bi-wire terminals

Your speaker’s dual binding posts exist to support bi-wiring or bi-amping, but when you run a single speaker cable you’re relying on jumpers to complete the circuit between the terminals. If those jumpers have higher resistance, weak contact pressure, or resonance-prone construction, they can soften dynamics and blur fine detail. The Jumperflux concept is simple: use a large-diameter, high-purity conductor and serious connectors so the jumper behaves like a proper section of speaker cable rather than an afterthought.

α(Alpha) OCC conductor for minimal internal impedance

Furutech specifies the Jumperflux cable structure as 7 bundles × 68 strands of α(Alpha) OCC, using 0.127mm strands with a 3.6mm total conductor diameter. This is designed for low internal impedance and stable signal transfer, especially important when your system demands current for bass control and transient slam.

Dielectric and jacket engineered for stability

Jumperflux uses a high-grade PE dielectric (listed as 5.3mm diameter) to help reduce capacitance and resonance effects versus generic insulation. The outer jacket is listed as a RoHS-compliant nylon braid (approx. 6.2mm), and Furutech also notes RoHS-compliant PVC in the overall jacketing approach—built for durability and consistent handling at the back of the speaker, where cables are moved and re-positioned.

Choose your termination: Spade or Banana

Furutech provides two purpose-built versions so you can match your speaker binding posts and layout:

• Jumperflux-S (Spade): Uses FP-201R spade terminals—nonmagnetic pure copper with rhodium plating for stable, long-term contact integrity. Spades are ideal when you want maximum mechanical security and contact area, especially on speakers that clamp down firmly.

• Jumperflux-B (Banana): Uses FP-200BR banana connectors—nonmagnetic eutectic copper alloy with rhodium plating for a secure, quick-fit termination. Bananas are perfect for tight spaces behind speakers, frequent swapping, or racks where you want fast, consistent connections.

What to expect in system performance

Furutech positions Jumperflux as improving resolution and clarity, delivering more powerful dynamics, and creating an ultra-quiet soundstage in which music develops more coherently—exactly the kinds of improvements people seek when they upgrade the final connection at the speaker terminals.

In practical listening terms, upgrading jumpers can be most noticeable when:

• Your speakers are revealing and your amplifier has strong control

• You hear mild “haze” or softened bass edges with factory jumpers

• Your system is already well-sorted and small changes are obvious

• You want improved separation in complex mixes without changing tonal balance

Ideal applications

• Any loudspeaker with bi-wire terminals used in single-wire mode

• High-end systems where speaker cables and connectors are already upgraded

• Installations where contact security and long-term reliability matter

• Users who frequently compare cables or move equipment and want a robust jumper solution