GAC-3 Ultraflexible microphone cable (Neumann wire) 1070x/1080x
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GAC-3 (10701/10702) 3 Conductor Microphone Cable!
GAC-3 , 5.8mm (10801/10802) 3 Conductor Microphone Cable large diameter!
also known as the Neumann/Gotham Microphone Cable
now in bown available
Balanced double shielded analoge audio cable! Legendary vintage "Neumann cable" construction.
Industrial exklusive 3 conductor construction for Microphone, only available from Gotham Audio.
Why three conductors for an audio signal? Here are some answers:
Grounding/shielding: With the third conductor put to ground, together with the two shields, we have increased RF-rejection to 115dB (20dB better than standard) at 25 kHz.
Round Construction: 3-conductor constructions are round constructions, and since the cable has the freedom to move in all directions, especially on the strain relief of a connector, the cable will survive more movement cycles.
Phantom Power: The 3rd conductor can be wired as a drain wire for a reliable connection of phantom power to the microphone without affecting the shield.
Each of the three conductors consists of 96 (!!) strands of 0.05mm copper wires being the finest stranding for audio cables available which gives you improved flexibility, better signal transport and longer lifetime (moving cycles). (Heavy duty version with 5.8mm Ø also available)
Paper from "Neil A Muncy" (AES Member)
Noise Susceptibilty in Analog and Digital Signal Processing Systems Presented at 97th AES Convention San Francisco November 1994 Revised April 13, 1995 Journal of the Audio Engineering Society Vol 43 #6 June 1995 p.435-453
AES paper:Neil A Muncy
Construction: | ||
| 1 = Jacket: | PVC, Ø 5.0mm, (10701-10702) | |
| PVC, Ø 5.8mm, (10801-10802) | ||
| 2 = Shield No. 1: | Bare copper wires (0.10 mm) 100% coverage | |
| 3 = Shield No. 2: | Bare copper wires (0.10 mm) 100% coverage | |
| 4 = Viscose fiber coat: | Counter wrapped to the twisted triple | |
| 5 = Insulation (cond): | PVC, Ø 1.2 mm, white, brown and green, twisted triple | |
| 6 = Conductor: | Stranded bare copper wires 96 x 0.05 mm (0.19mm²) 96x44 AWG = 24 AWG | |
Technical Datas: | ||
| Conductor resistance: | < 90 ohm/km | |
| Shielding resistance: | < 20 Ohm/km | |
| Capacitance: | cond/cond: | < 150 nF/km |
| cond/shield: | < 240 nF/km | |
| Characteristic impedance: | at 10 kHz: | 150 Ohm |
| Test voltage: | cond/cond: | 500 veff |
| cond/shield: | 2000 veff | |
| Operating voltage: | low voltage | |
| Temperature range: | flexi-installed: | -5° to +50° C |
| fix-installed: | -30° to +70° C | |
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