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QED Reference Subwoofer 40 - Premium Reference Subwoofer Cable The QED Reference Subwoofer 40 cable delivers precise timing, exceptional accuracy, and tight, high-fidelity bass performance for your audio system. Engineered to preserve the rhythm and detail of low-frequency sounds, it ensures superior subwoofer connectivity and enhanced audio clarity. Key Features QED Complementary Conductor Technology™ with 99.99% silver-plated oxygen-free copper conductors Zn/Mn ferrite jacket absorbs high-frequency noise signals outside the audible band Low-loss foamed polyethylene (PE) dielectric for enhanced signal integrity 99.999% oxygen-free copper braid provides 100% electromagnetic screening coverage in coaxial geometry Twin leaf 24-carat gold-plated QED Analoc™ RCA plugs with high-purity copper contacts, hollow centre pin, and low eddy current design Product Overview The Reference Subwoofer 40 cable is designed for low capacitance, a key factor in achieving tight, rhythmically accurate bass. QED’s Complementary Conductor Technology™ utilises two silver-plated oxygen-free copper conductors of different diameters to carry the same audio signal, reducing time smearing and enhancing timing and detail. A floating Zn/Mn ferrite jacket absorbs very high-frequency noise outside the audible range, improving micro-timing and clarity. The Analoc™ RCA plug features small, high-purity gold-plated copper conductors and a hollow central pin to reduce eddy currents and combat skin effect, maintaining high-fidelity audio throughout. Award-Winning Heritage QED has won more What Hi-Fi? Awards than any other brand. The Reference Subwoofer 40 cable embodies this legacy, delivering uncompromised musical performance with a top-down design approach. Specifications Conductor Section: 0.30 mm² Parallel Capacitance: 124 pF/m Loop Resistance: 0.076 Ω/m Loop Inductance: 0.33 μH Dissipation Factor @ 10 kHz: 0.0210 Outside Diameter: 6 mm QED Lifetime Guarantee