When does cable capacitance matter?

Very long runs and high capacitance per metre can slightly roll off treble into low impedances.

Speaker Cable Capacitance Calculator

High-frequency roll-off from cable capacitance and speaker impedance.

Cable length (m)

Capacitance (pF/m)

Speaker impedance @ HF (?)

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 ?, 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.