Which qed speaker cable

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Nordost Ethernet. Already have an account? Login here. Browse our extensive range of headphones with offerings utilising all types of driver technologies. Find the perfect amplifier to match and maximise the performance of your speakers, headphones and earphones.

Experience the best audio on-the-go, choose from our vast array of Earphones from noise isolating universal earphones to fully custom professional monitors. British firm QED must surely be the first specialist high-fidelity audio cable company in the business.

It started way back in with a speaker cable. Back in those days, people often used astonishingly thin and inefficient wires for their speakers. Unique proprietary technology and trademarked geometries plus our award-winning heritage all combine to create audible sonic improvements when compared to other loudspeaker cables. Here are some comments from our panel of testers drawn from experts in the industry and amateur enthusiasts alike:. The graph below shows how the resistance part of the impedance of XT40i speaker cable remains effectively unchanged across the entire audible frequency band when compared to an ordinary speaker cable of the same cross-sectional area.

Combined with the sonic advantages of a lower-loss dielectric, these improvements place the new speaker cable in a unique position to rival its illustrious predecessor. During development, we typically design and test at least four variants of each design to see where the extremes of each of the parameters lie.

The cable that eventually becomes a product has been measured and listened to exhaustively and represents the best state-of-the-art at any given time. QED XT40i speaker cable is no exception in this regard. Another issue is the dissipation factor of the dielectric material. Dissipation factor is an indicator of how much energy will be lost while charging and discharging the cable during each alternating cycle.

Materials with low permittivity also tend to have low dissipation factor. Large amounts of capacitance across an amplifier output can cause instability, especially at high frequencies, with many listeners describing high capacitance cables as harsh. It is therefore important to keep capacitance and dissipation factor of the cable as low as possible. Unfortunately ordinary large cross-section cables will have high capacitance due to their poor quality dielectric and high inductance caused by the necessarily increased spacing of their large conductors.

Many of our competitors have tried to solve these problems but there is a catch 22 problem here. In order to make the capacitance lower they move the conductors further apart which only increases the inductance and in order to make the inductance lower they move the conductors closer together again which only increases the capacitance.