QED XT40i Speaker Cable - Custom Length
Upgrade your audio experience with the QED XT40i Speaker Cable. This remarkable cable showcases QED's cutting-edge Air Gap dielectric technology, elevating its performance to new heights compared to its predecessor, the XT40. Immerse yourself in a world of clear articulation, robust mid-end, and impactful bass that results in a smooth, warm, and detailed sound.
With nearly five decades of expertise in speaker cable design, QED presents the XT40i as a significant step forward in sound quality. Building upon the formidable reputation of the XT40, this pure oxygen-free copper cable incorporates QED's renowned X-Tube technology, ensuring impeccable timing and stereo imaging.
Air Gap Dielectric
Additionally, the XT40i introduces the innovative Air Gap dielectric, revolutionising rhythmic accuracy and musicality within an affordable price range. By increasing the separation between conductors and introducing more air, the cable experiences reduced dissipation and capacitance characteristics, leading to tangible improvements in timing and rhythmic accuracy. Remarkably, despite this increased separation, the XT40i maintains a substantial cross-sectional area, making it ideal for long cable runs.
Large Cross-Sectional Area
One of the notable features of the XT40i is its large 4mm² cross-sectional area, which results in minimal resistance. This allows amplifiers to exert exceptional control over the speakers, delivering a powerful and precise audio performance. Moreover, the generous cross-sectional area makes the XT40i suitable for long cable installations without compromising its impressive audio capabilities.
The X-Tube technology employed in the XT40i distinguishes it from conventional stranded or solid core speaker cables. While both types convey low-frequency signals linearly, at high frequencies, X-Tube technology excels by maintaining near-linear signal transfer. In contrast, traditional cables fail to conduct uniformly across the entire conductor area, resulting in higher distortion and compromised performance. The X-Tube technology, incorporating poly core technology, significantly reduces self-inductance and overcomes these limitations, providing enhanced high-frequency detail, reduced distortion, and superior overall performance.
The XT40i benefits from QED's innovative new Air Gap dielectric technology as an upgrade on the old XT40, resulting in a much-enhanced performance for an already reputable cable. Expect clear articulation accompanied by strong mid-end and bass, resulting in a smooth, warm, detailed sound.
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X-Tube™ Technology
At low frequencies both X-Tube™ 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.
The result is more high frequency detail, less distortion and greater performance.
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Specification :
- Please note, you need to enter a quantity of 2 for a pair
- Length : Custom
- Wire gauge - 12 AWG
- Jacket Outer Diameter - 14mm x 6mm (W x D)
- Cross-sectional area - 4.00mm²
- Loop resistance - 8.0 mΩ/m
- Capacitance - 35pF/m
- Inductance - 0.57 µH/m
- Dissipation factor @ 10KHz - 0.0295
- Nominal outside diameter 6.0 mm
- Lifetime Guarantee
- Usually pre-burnt-in with Nordost Vidar for 96 Hours
Plug Termination
At Future Shop, we understand the importance of high-quality termination for achieving the best audio performance from your speaker cables. That’s why we offer two exceptional options: the trusted QED AIRLOC banana and spade plugs and the Elite Reference Series banana and spade plugs, both designed to deliver seamless connectivity and exceptional sound quality.
QED AIRLOC Plugs: A Proven Standard for Hi-Fi Performance
The QED AIRLOC banana and spade plugs have long been regarded as a benchmark in speaker cable termination. Featuring a cold-weld (air-tight) design, these plugs eliminate the need for soldering, ensuring a clean, reliable connection between your cables and audio equipment. This method creates an airtight fusion between the cable and plug, minimising resistance, preventing oxidation, and maximising signal transfer for pristine sound quality.
QED’s banana plugs incorporate a high-quality design, with 24K gold plating to enhance conductivity and protect against corrosion. The spade plugs, while lacking an outer metal barrel, still deliver dependable performance and an excellent connection for a wide variety of speaker setups. For audiophiles seeking trusted reliability and strong performance, QED AIRLOC plugs remain an outstanding choice.
Elite Reference Series Plugs: Next-Level Audio Connectivity
Building on the success of the QED AIRLOC plugs, the Elite Reference Series banana and spade plugs take performance and durability to the next level. Also featuring a cold-weld design, these plugs ensure an airtight, solder-free bond that delivers maximum signal transfer and long-term reliability.
The Elite Reference plugs are engineered with additional advantages that make them stand out:
- AirTite Ferrule-Free Design - Unlike traditional plugs that use ferrules, the Elite Reference plugs opt for direct conductor-to-plug contact, removing any potential barriers to signal transfer. Featuring four different inlet sizes, these plugs are perfectly tailored to fit various cable gauges with a cold-weld, air-tight design, that eliminates soldering, reduces resistance, prevents oxidation, and enhances durability.
- Beryllium Copper Core with 24K Gold Plating - The banana plugs feature a beryllium copper core, known for its exceptional mechanical strength and conductivity. This material resists corrosion and retains its shape, maintaining a tight and reliable connection over time. The 24K gold plating ensures a smooth, high-quality signal path while adding durability for years of consistent performance.
- Dual Functionality - Designed as BFA and banana plug compatible the Elite Reference banana plugs provide greater versatility, making them suitable for a broader range of speaker terminals. This added functionality ensures compatibility with high-end Hi-Fi setups and equipment.
- Silver Core Spade Plugs with Metal Barrel Protection - The spade plugs in the Elite Reference Series incorporate a silver base plated with 24K gold, offering superior conductivity compared to many alternatives. Unlike other spade plugs, the Elite Reference spades also include a durable metal outer barrel, providing additional protection and a premium finish.
- The Elite Reference plugs are manufactured in Taiwan, a region renowned for its precision engineering and high-quality manufacturing standards. This ensures that every plug is built to exact specifications, offering exceptional consistency, reliability, and performance.
Both the QED AIRLOC and Elite Reference Series plugs are excellent choices for ensuring the best possible performance from your Hi-Fi system. While the QED AIRLOC plugs provide trusted reliability and high-quality connections, the Elite Reference Series plugs offer enhanced conductivity, ferrule-free direct contact, and added durability with their premium materials and design features.
If you’re looking for a cost-effective and proven solution, the QED AIRLOC plugs are a fantastic option. However, if you’re seeking the next step in performance, versatility, and build quality, the Elite Reference Series plugs are designed to meet the demands of audiophiles who want the best from their speaker cables.
A Professional Plug Termination Service
Whichever plug you choose, you can trust Future Shop to professionally terminate your cables to the highest standard. Our experienced engineers ensure that each connection is secure, precise, and optimised for maximum performance. Both the QED AIRLOC and Elite Reference plugs are terminated using our high-pressure cold-weld process, guaranteeing airtight connections and minimising signal loss.
With these expertly engineered plugs, you’ll enjoy superior sound quality, dependable connections, and peace of mind knowing your audio setup is performing at its best. Let Future Shop help you create the perfect Hi-Fi experience with our range of premium speaker cable termination options.
How to Order
From the dropdown menus' above, simply select the length of cable, the type of plugs required at the ‘Amplifier end’ and ‘Speaker end’ and click on the 'Add to Basket' button to add the item to your basket. Your cable will be dispatched as soon as it has been made by Future Shop's or the manufacturer’s engineers and has completed the specified burn-in process (if any), subject to Future Shop’s Terms & Conditions and stock availability.
About QED Cables
QED is an award winning British company with over 40 years of experience in the audio-visual connectivity industry.
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 speaker cable was launched in 1978, it wasn’t looked upon as ‘just another speaker cable’ but was instead regarded as a serious hi-fi component, making a fundamental change in the way people thought about 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 products are recommended by so many of the world’s leading hi-fi and home theatre equipment manufacturers.
QED offer a range of connectivity products spanning from both consumer and installation cables, wireless products and switching devices to satisfy every audio visual need.
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).
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