How the speaker cable capacitance calculator works
Cable length and capacitance per metre form a capacitive load with speaker impedance, yielding an RC roll-off frequency and approximate loss at 20 kHz.
Key terms
- Cable capacitance - parallel capacitance between conductors (pF/m typical).
- RC roll-off - high frequencies attenuated when cable C is large vs driver Z.
- HF impedance - tweeter region often higher Ω, less affected than woofers.
Frequently asked questions
- When does cable capacitance matter? Very long runs and high capacitance per metre can slightly roll off treble into low impedances.