Cable Length Calculator — Maximum Audio Cable Runs
Calculate maximum cable length before signal degradation for different cable types.
How We Calculate This
Maximum cable lengths are determined by signal type, cable construction and acceptable signal loss.
Signal loss = cable length × loss per metre (dB/m)
Balanced connections carry the signal on two conductors with opposite polarity. Any interference picked up affects both equally and is cancelled at the receiving end (common-mode rejection). This allows much longer cable runs than unbalanced connections.
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates based on standard formulas. Always verify results for critical applications.