Graham Slee CuSat Digital Interconnect Cable

• Holding It Together
• The conductive strength of the CuSat50 holds your equipment grounds tightly together and in doing so keeps ground-interference away.
• The importance of keeping impedance low between the grounds of interconnected equipment isn't widely understood in hi-fi.
• However, it is highly important in keeping hum levels as low as possible, and is widely known by true professionals in sound engineering.
• Think for a minute of the opposite: if impedance - which is the term for ac resistance - were allowed between equipment, their grounds (or zero volts) could "float" independantly of each other.
• Protecting The Signal
• The great thing about such a robust and highly conductive shield like the CuSat50's is its thorough protection from interference getting to the signal conductor inside.
• The hi-fi fashion over the last decade or so has been to "play around" with interconnects, often not using any shielding at all, but just having two wires - one for signal and one for return - which offers no protection at all.
• Another trend has been to tightly twist send and return wires, which may work to some extent in balanced audio, but again offers little protection in single-ended connections.
• The third trend we know has been to use twin cored shielded cable but only use the two wires for signal and return, leaving the shield unconnected. A shield without any signal return current running in it offers no protection!
• And then there's a variation on the last which connects the shield to ground at one end only, but that's only partially effective up to some cable-length dependant frequency, after which inteference is free to do its worst.
• Any mains-borne noise (hum) would create a voltage variation between the equipment grounds. The signal would therefore be modulated - the noise would encroach on your music.
• The CuSat50 uses ultra-low impedance shielding - the part of the cable responsible for keeping the grounds tethered - to bring that possibility to an absolute minimum.
• It's shielding comprises a tightly knit copper braid over, and in contact with, a copper foil which completely wraps around the inner signal cable.
• Copper is the second most conductive metal known behind silver, and its DC resistance is a mere 15 mΩ/m making the CuSat50 a great choice.
• The difference is you're getting more than you bargained for: other noises are adding to your music and that simply isn't high-fidelity.
• On top of that you risk real interference and if you weren't reading this you'd wonder what was causing it. The solution is simple: it's called CuSat50!
• Low Capacity
• The capacitance of the CuSat50 is only 55pf per metre which means it won't attenuate high frequencies even in longer lengths.
• Most preamps, or any other signal processing equipment outputting analogue audio, have output impedance which guards against instability from capacitive loading.
• But that output impedance (ac resistance) can form a low-pass filter with the cable capacitance, filtering the highest frequencies.
• Tubed equipment has the highest output impedances which limits its ability to drive long cables.
• And some products have little or no output impedance which can leave them prone to instability from too high a cable capacitance.
• If you're in any doubt at all and want to ensure the correct operation of your equipment you should make the CuSat50 your number one choice.
• Quality Connectors
• With sprung split centre-pins and collet twist-locking barrel RCA/phono plugs - with gold plating - the CuSat50 make excellent 360° connections with all RCA/phono jacks.
• That's simply not the case with some "fashion" hi-fi RCA/phono plugs, especially those single contact plastic plugs some sellers rave about.
• The CuSat50 makes good and reliable 360° contact - plus - they're easier on you and your equipment by you not having to exert extreme force to push them on or pull them off.
• The CuSat50 can also be fitted with XLR and TRS connectors (stereo jack plugs used on balanced audio equipment) again using high quality connectors mainly from the world-renowned Neutrik.
  
  

• Coax stock cable diameter
  6.5mm
• Single cable sheathed diameter
  10mm
• Stereo cable sheathed cross section
  16mm x 10mm
• Inner conductor
  1mm diameter solid soft annealed copper;
• DC resistance:
  0.026 Ohms per metre
• Shield
  Annealed copper braid over 100% copper foil wrap;
• DC resistance:
  0.015 Ohms per metre
• Jacket
  PVC
• Dielectric
  5 cell semi air-spaced
• Dielectric constant
  1.49
• Velocity ratio
  0.82 (82%)
• Capacitance
  55pf per metre
• Characteristic impedance
  75 Ohms
• Shielding efficiency
  Better than 65dB
• Lay-up
  "dual-mono" Seperated stereo pair overall flexible PVC braided with welded ends
• Direction
  Marked as "run of the mill"
• Min safe bend diameter
  150mm (6 in)
• Phono terminations
  Locking phono (RCA) plugs with gold plated contacts
  
  
  

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