Audio Cable Capacitance Calculator
Enter cable capacitance per unit length, cable length, user-specified series resistance and signal frequency. The RC result is an ideal unloaded low-pass estimate.
A QUICK WALKTHROUGH
How to use this tool
- Enter capacitance per metre, cable length, series resistance and frequency.
- Read total capacitance and the unloaded RC low-pass estimate.
- Treat the estimate as a simplified model without source/load impedance or distributed cable effects.
Model scope
Total capacitance is c per unit length times cable length. Frequency response treats the cable as a lumped shunt capacitor driven through the user-entered series resistance: H(jω)=1/(1+jωRC). It omits source/load impedance, inductance, distributed effects and connector capacitance.
GOOD TO KNOW
Common questions
Does the calculator know my amplifier output impedance?
No. Enter a chosen series resistance; source and load impedances are not modeled separately.
Is the cutoff a cable-only specification?
No. It is the ideal RC corner for the entered resistance and total cable capacitance.