About The QED Reference 40 Subwoofer Cable
QED Reference Subwoofer 40, a high standard for timing, accuracy and rhythm. For QED fans, this is the cable you want for your 'dream' subwoofer. The folk at QED have thrown all their expertise and available materials to deliver a premium product and at a price that isn't excessive. The QED Signature Analoc connectors are fitted at both ends for a snug fit.
QED Subwoofer 40 has been designed primarily for low capacitance, as this has been identified by QED as a major factor making for a tight sound which retains the rhythm of the original piece - vital when it comes to the 'bottom end!" Minute timing errors are ameliorated by the use of QED's Complementary Conductor Technology combined with a special floating Zn/Mn ferrite jacket to absorb very high frequency noise signals outside the audible band. The QED Analoc plug design helps to control eddy currents which can also affect the micro-timing of the audio signal, maintaining high- fidelity from start to finish.
Award Winning Heritage: QED has won more What Hi-fi Awards than any other single brand. With the Reference cable range this heritage is delivered directly and without compromise. All QED cables are designed using the top down principle with Reference Subwoofer 40 representing the pinnacle of musical performance.
Floating Internal Ferrite Jacket: Absorbs high frequency noise signal components outside the audio band. When measured using high frequency measurement equipment, Audio 40 products convey a comparably cleaner and tighter signal pattern when its special Zn/Mn ferrite jacket is present. This has a beneficial effect on audio signal micro-timing and may account for the clear preference expressed for the ferrite jacket in listening tests.
Just Listen: Silver plated signal carriers, effective high quality shielding and low eddy current plugs all combine to create audible sonic improvements. We urge you to compare it not only to your favourite cable but also alternative brands and models at any price!
Analoc RCA Plugs: This all new locking design features small high purity gold plated copper conductors in place of the usual large volume brass body found in ordinary "high quality" plugs. This cuts down or eliminates the tendency for the changing magnetic field in the conductor to induce eddy currents which are thought to affect the micro-timing of the audio signal. Coupled with its hollow central pin, which is designed to combat the skin effect in the same way as our X-Tube speaker cables, the new QED Analoc plug maintains the fidelity of the audio signal from start to finish.
Complementary Conductor Technology: Improves timing and detail, retaining the rhythm of the original piece - vital when it comes to the "bottom end." Unlike conventional analogue interconnects, Reference Audio 40 uses two silver plated 99.999% Oxygen Free Copper conductors of different diameters to carry the same audio signal. This has the effect of providing an alternative signal path for more subtle audio components which might otherwise become time smeared in a single audio pathway. Reference Subwoofer 40 is further optimised by having a 25% smaller diameter than Reference Audio 40 making it more convenient for those long runs around the room.
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
Main Features & Specifications
- QED Complementary Conductor Technology with 99.99% Silver Plated Oxygen Free Copper
- Zn/Mn ferrite jacket to absorb high frequency noise signals
- Low loss foamed polyethylene (PE) dielectric
- 99.999% Oxygen Free Copper braid for 100% electromagnetic screening coverage in a coaxial geometry
- Twin leaf 24k Gold plated QED Analoc RCA plugs featuring high purity copper contacts, hollow centre pin and low eddy current design
- Conductor Section: 0.30 mm2
- Parallel Capacitance: 124 pF/m
- Loop Resistance: 0.076 Ω/m
- Loop Inductance: 0.33 uH
- Dissipation Factor @ 10 kHz: 0.0210
- Outside Diameter: 6 mm
- Available Lengths: 3 metres 6 metres & 10 metres
- Manufacturer's Warranty: Lifetime Warranty - Does not include misuse or abuse
Note: Features & Specifications Subject To Change Without Notice. E&OE.