FAQ's
Q. Isn't the AirLoc termination just a method of crimping?
Answer: The QED AirLoc system is NOT a crimp, but a proper "cold weld". It's agreed with that a crimped connection would be the last thing that you would want for a speaker cable which must carry high current although it CAN be more tolerable in a ...
Q. What are the dimensions of the QED Universal Spade termination?
Answer: Please find below a dimensioned drawing of the QED Universal Spade termination used in the AirLoc ABS Standard Spade. QED Standard Spade termination dimensions
Speaker Cable - Q. Should I use a dedicated bi-wire cable or two single cables when bi-wiring my loudspeakers?
Answer The capacitance and inductance of a speaker cable depends on the separation of the two conductors. The nearer you place the two conductors together the higher the capacitance and the further away you place them from each other the higher the ...
Q. What is the specification of the QED Micro Bi-Wire cable?
Answer: Type: Bi-Wire +/- -/+conductors Conductor Section (mm2): 4 x 1.25 Conductor Material: 99.999% OFC Conductor dielectric: Polyethylene Loop Resistance (ohms/m): 0.0289 Parallel Capacitance (pF/m): 32.43 Loop Inductance (uH/m): 0.73 Dissipation ...
Q. What is the specification of the QED Silver Anniversary cable?
Answer: Type: Single Wire +/- conductors Conductor Section (mm2): 2 x 2.5 Conductor Material: Silver Plated 99.999% OFC Conductor dielectric: Polyethylene Loop Resistance (ohms/m): 0.0149 Parallel Capacitance (pF/m): 42.90 Loop Inductance ...
Q. What is the specification of my QED Bronze Special Edition cable?
Answer: Type: Single Wire +/- conductors Conductor Section (mm2): 2 x 2.5 Conductor Material: 99.999% OFC Conductor dielectric: Polyethylene Loop Resistance (ohms/m): 0.0154 Parallel Capacitance (pF/m): 35.00 Loop Inductance (uH/m): 0.57 Dissipation ...
Q. What is the specification of my QED Original cable?
Answer: Type: Single Wire +/- conductors Conductor Section (mm2): 2 x 2.5 Conductor Material: 99.999% OFC Conductor dielectric: Polyethylene Loop Resistance (ohms/m): 0.0145 Parallel Capacitance (pF/m): 40.00 Loop Inductance (uH/m): 0.58 Dissipation ...
Q. What is the specification of my QED Micro cable?
Answer: Type: Single Wire +/- conductors Conductor Section (mm2): 2 x 1.25 Conductor Material: 99.999% OFC Conductor dielectric: Polyethylene Loop Resistance (ohms/m): 0.0289 Parallel Capacitance (pF/m): 25.00 Loop Inductance (uH/m): 0.63 Dissipation ...
XT40 vs XT40i
Regarding XT40 vs XT40i, XT40i boasts Air Gap Dielectric and improved capacitance; this is what some of our listening panel said about the cable compared to the older XT40: “…I wanted to keep listening and turn it up…” “…very engaging, could follow ...
Q. What is the outer diameter of my speaker cable jacket?
Answer: Please find the single core and overall jacket outer diameters for QED loudspeaker cables as follows:
Supremus - Q. What are the benefits of bi-wiring using Supremus speaker cable?
Answer: We have yet to introduce a bi-wire version of Supremus, but doubling up two single wires would have the effect of doubling capacitance and halving inductance and resistance. It won’t affect the dissipation factor, because that is a unit-less ...
Q. How long can my speaker cables be?
Answer: Generally speaking, you should not use speaker cable with a loop resistance more than 5% of the nominal speaker impedance. This means that, as an example, the limit for Silver Anniversary XT is 18m/59 feet for an 8 ohm speaker and at this ...
Q. Which QED speaker cable should I use?
Answer:
Q. How does QED calculate the loop resistance of their cables?
Answer: It is important to note that loop resistance per metre means that the conductor is actually two metres long (there and back again), so the quoted figure will always be at least twice that of the resistance per metre of a single conductor ...
XT40i - Q. Why is the XT40i cable 12AWG and do you have any 10AWG speaker cables?
The reason that XT40i was designed as 4.0mm2 was so that it was able to match a certain price point, and a bigger cable would have meant a more expensive one. American Wire Gauges represent a range of cross-sectional areas and so really, they are not ...
Airloc Spade Plug - Q. What are the dimensions of the QED Airloc Spade?
Answer: Please see the dimensions below, which are all shown in mm:
Q. How can I terminate my cables with Airloc plugs/spades?
Answer: QED Airloc termination requires a specialist tool to carry out the cold weld crimp, these tools are carried by QED dealers, as are the terminations. Your local QED dealer will be able to advise you on the costs involved to carry out the ...
79 Strand - Q. How can I tell which core is positive/negative?
Answer: If you run a finger over the two cores, you will notice that one of them has a rib/ridge on the outer jacket so that you can differentiate between them.
Airloc - Q. What material are the QED Airloc plugs made from?
Answer: In the standard Airloc plugs we use an alpha brass with at least 63% pure copper alloyed with zinc for the body and beryllium copper alloy for the spring part. Alpha brass is used because it can be easily worked when cold during the ...
XT40i - Q. What is the minimum bending radius of this cable?
Answer: The XT40i is a large cable with a specific internal construction that is important to the way it sounds. In order to not crush the hollow X-Tube filler rods, a minimum bend radius of 30mm is required, however the cables will work better if ...
Airloc - Q. What type of copper is used within the Airloc spade connectors?
Answer: The Airloc spades are 24k gold plated, and feature a high copper brass body; specifically CZ131 Riveting Brass which is the perfect compromise between ductility and strength.
Q. Will bi-wiring increase the resistance and inductance seen by the amplifier?
Answer: Because the two runs of speaker cable are wired in parallel it will have the effect of halving the resistance and inductance seen by the amplifier.
Q. How do I terminate an x-tube QED cable?
Answer: Please be aware that you should snip the inner core x-tubes that run down the centre of each conductor, leaving the copper which can then be inserted into the plugs - please refer to the attached images.
Q. Can I join my QED loudspeaker cables together to make them longer?
Answer: Regarding connecting cables of the same type, whilst you may find it physically possible, this is not something which we recommend or support as in doing so, you would be interfering with the optimal performance of the cable. Although we do ...
Q. Are QED loudspeaker cables directional?
Answer: No, our loudspeaker cables are not directional, but you should orientate them the same way on both channels, for example, the writing on the cable jacket/sheath gives the direction of draw of the conductors when manufactured, we advise the ...
Q. Which QED cable has "balanced design concept speaker cable" printed on it?
Answer: A number of QED cables have carried the "QED balanced design concept speaker cable" printed on the jacket, these included the following:- Original Qudos Silver Qudos We'd advise taking a photo of the cable you have and then submitting it to ...
Supremus - Q. What is special about the QED Supremus speaker cable?
THE ULTIMATE EXPRESSION OF SOUND BORN FROM PURE SCIENCE The largest cross sectional area of pure copper ever incorporated into a QED loudspeaker cable, enables Supremus to deliver the ultra-low resistance required to ensure perfect fidelity of the ...
Q. What is QED Airloc?
Answer: To discover what Airloc is, and how it plays a vital part in cable design, please click here.