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Shielded Audio Cables for Broadcast Studios: 99.99% OFC Conductivity and
2026-06-11
- Broadcast studios demand shielded audio cables with 99.99% OFC (oxygen-free copper) conductivity and capacitance below 100 pF/m to prevent EMI-induced noise from contaminating microphone-level signals as low as -60 dBu.
- High-purity OFC reduces grain-boundary resistance, delivering measurable signal integrity improvements over standard ETP copper in long cable runs exceeding 50 meters.
- Capacitance above 100 pF/m degrades high-frequency response and increases susceptibility to crosstalk in multi-pair broadcast snakes common in OB trucks and live venues.
- Our broadcast-grade microphone cable series at Jingyi Audio is built to these tolerances, validated against IEC 60228 Class 2 and ITU-R BS.468-4 noise weighting standards.
- Choosing the right shield topology—foil, braided copper, or hybrid—depends on your studio's RF environment, not just the spec sheet.
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