Copper cable, with both conductors included. Loss compares speaker power with the same ideal amplifier and no cable; nominal speaker impedance varies with frequency.
How to use
- Enter the dimensions and electrical values.
- Adjust the assumptions to match your components.
- Read the result and check the technical limits below.
Formula and assumptions
R = 2ρL/A; P/P₀ = [Z/(Z + R)]²; A ≥ 2ρL / [Z(1/√(1 − p/100) − 1)].
Calculated example
- One-way cable length
- 10 m
- Speaker impedance
- 8 Ω
- Acceptable power loss
- 5 %
- Wire cross-section
- 2.5 mm²
- AWG
- 14
- Acceptable power loss
- 3.361 %