This 'Five Star' award winning pure copper loudspeaker cable boasts QED's advanced X-TubeTM technology and a massive 4mm2 cross sectional area.
The 4mm2 cross sectional area means XT40 exhibits very low resistance, allowing amplifiers to exert outstanding control over the speakers they are driving. In addition, its large cross sectional area makes it suitable for long cable runs.
This results in a cable that delivers clear sonic advantages over conventional cable designs by maintaining a flat frequency response within the audio band.
At low frequencies both X-TubeTM and conventional stranded/solid core speaker cables convey signals in a linear way. However, at high frequencies, X-TubeTM retains a near-linear signal transfer, whereas the conventional cables fail to conduct uniformly across the entire conductor area.
In standard speaker cables at high frequencies current flow is highest at the periphery with rapidly deteriorating current density towards the centre of the conductor. The effect of this is to reduce the actual cross sectional area of the cable at 15kHz to less than 75% of that at low frequencies. This results in higher distortion and compromises the performance of the cable.
X-TubeTM with polycore technology exhibits much lower self-inductance and is therefore less affected by this problem. The polycore technology reduces loop inductance to levels only achievable using more costly and difficult to terminate cables.
So, with more high frequency detail, less distortion and greater performance, X-Tube delivers greater fidelity across the audio spectrum which would otherwise be lost in ordinary cables.
"Everything about the XT40 is clear and engaging....superb performance at the price"
HiFi Choice Extras 2015, February 2015
"The QED XT40 is a special cable – detailed, balanced and authoritative, and we think it’s worth every penny. Go treat your system."
What HiFi? Sound and Vision, October 2014
The History Of QED
In 1973 Bob Abraham and Ian Vine founded QED Audio Products and changed the way people think about hi-fi cables. By the time QED 79 strand was launched in 1978, it wasn’t considered' just another speaker cable' but a serious hi-fi component.
During 1994 QED conducted the most extensive ever scientific investigation into the effects of speaker cable on hi-fi system performance. Read the results in “The Genesis Report”. Hear the results whenever you listen to your favourite music using QED cables.
QED's reputation for innovation and technical excellence is known throughout the world. The latest computer-aided design techniques allow their research and development team to keep pace with technological advances and deliver products that achieve the highest levels of performance and reliability. This is why QED speaker cables are recommended by so many of the world’s leading manufacturers of hi-fi and home theatre equipment.
QED is Europe's number one award winning connectivity brand and has won more prestigious cable awards from ‘What Hi-Fi? Sound & Vision’ magazine than any other brand (Awards 1981–2013).
QED - The Sound Of Science
- Paper wrap and pearl white finish PVC jacket comprise the cable dielectric
- 99.999% OFC (Oxygen Free Copper)
- X-Tube™ technology
- Jacket OD - 6.00mm
- Cross-sectional area - 4.00mm²
- Loop resistance - 0.008 Ω/m
- Capacitance - 59pF/m
- Inductance - 0.46H/m
- Dissipation factor - 0.0576
- Ideal for use in all installations
- Manufacturer's Warranty: Lifetime - Click here for full warranty terms and conditions.