In article , Lawrence
Leung wrote:
Hi, I've been chasing high dollar speaker cables for years, until I
finally want to make one myself.

Could anyone tell me how to measure one speaker cable's inductance and
capacitance using a handheld LCR meter?

Connect the meter to the two wires at one end of the cable.

Measure the C value by ensuring the far end of the wires are disconnected
from each other (i.e. open circuit at the far end) and using the relevant
range on the meter.

Measure the L value by ensuring that, at the far end, the two wires are
connected together (i.e. a short circuit at the far end) and using the
relevant range on the meter.

Check the R value using a reistance range, with the wires shorted as for L.

The results may, of course, depend upon your meter to some extent. So, may
depend upon the frequency it uses, how long the cable is (in wavelengths),
and if/how it takes the series R into account when measuring the L, and so
on.

A quick check is to work out the signal velocity from the C and L values.
This should be approaching the speed of light in vacuum. If it exceeds
this, or is much lower, the values should be regarded as unreliable.

Depending upon circumstances, you may find the C and L values depend upon
how the cable is laid out and/or the presence of any nearby objects.

Slainte,

Jim

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