Gotham Audio 11281 GAC-4/1 V2 Starquad 4-conductor microphone cable
Construction: |
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| 1 =-Jacket: | PVC, Ø 6.30 mm, velvet black 1,30mm | |
| 2 = Shield No. 1 | Bare copper wires (0.10 mm) 100% coverage | |
| 3 = Shield No. 2 Conductive Viscose fiber coat: |
K6160 Polyester nonwoven thermally bonded, both sides copper coated. Counter wrapped to the quad twisted conductors |
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| 4= Twisting | 4 core twisted together, star-quad | |
| 5 = Insulation (cond): | PE -2YI1 , Ø 1.2 mm, 0.30mm , red, white, ivory, pink, star quad arrangement | |
| 6 = Conductor: | Stranded bare copper wires 7x0.20mm LCOF Ø 0.60mm (0.22 mm²) 7x32AWG = (24AWG) | |
Technical Datas: |
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| Conductor resistance: | < 85.0 ohm/km | |
| Shielding resistance: | < 14.0 Ohm/km | |
| Capacitance: | cond/cond: | < 42 nF/km |
| cond/shield: | < 120 nF/km | |
| Side circuit capacitance: | single conductor | 42 pF/m |
| Side circuit capacitance: | Quad system | 120 pF/m |
| Noise attenuation: | 130 dB (see wiring) | |
| Characteristic impedance: | at 20 kHz: | 180 Ohm |
| Test voltage: | cond/cond: | 1200 veff |
| cond/shield: | 1200 veff | |
| Operating voltage | low voltage 100v max | |
| Temperature range: | flexi-installed: | -5° to +50° C |
| fix-installed: | -30° to +70° C | |
Starquad wiring instruction 11288 starquad:
In order to benefit from the Starquad concept you need to wire the 4 conductors for you balanced audio cable as follows: (See wiring diagram below)
Bundle each opposite (Star) conductor together,
Pin2= red&ivory (Signal+), Pin3= pink&white (Signal -). Pin1= shield 1&2 =Ground
Put each a few strands of each layer of the shields together to ground Pin 1 should you not have space for all shielding strands.
Cut away any spare strands from the shields and secure that no loose strands are hanging around. Use a shrinking tube to avoid short circuits.
We do not recommend putting any ground to the body shell on either side of your XLR line. The connector shell will get to ground once plugged into a receptacle.
Gotham "Star-Quad" cables are the most advanced microphone cables presently available. We have combined an ultraflexible PVC-jacket, low capacitive PE insulation, " Reussen shielding" and quad (4-conductor) construction for a truly professional cable at an affordable price. The "Star-Quad" concept is known and recommended where the RF-rejection is the most important factor and where very long cable runs are needed. As we use each 2 conductors for low and high signal, we reduce the signal loss by 50% and due to the offset of the incoming RF-signal by the way the 4 conductors are twisted, the RF-rejection is over 130dB (25 kHz). The exclusive double shielding does its part of these features as well.
