On Tuesday, 26 December 2017 23:52:17 UTC, Roger Hayter wrote:
tabbypurr wrote:
On Tuesday, 26 December 2017 22:37:42 UTC, Roger Hayter wrote:
tabbypurr wrote:



An 8ohm speaker is 6-7 ohms dc resistance. A metre of 1mm^2 cable is
44mohm, so 2.5 metres is 0.11ohms. So no detectable difference on the
sound whatsoever.

But a good quality audio amplifier may have an output impedance of
around 50milliohm at low frequencies, so the damping effect on an 8ohm
speaker may be significantly affected by an extra series 110 milliohms.

I already explained why it isn't.

You have explained why it wouldn't be if speaker cabinets contained only
an 8ohm non-inductive resistance. But they wouldn't be much use if
they did..

that isn't what I said. But I can see discussing is a waste of time. This ever happens when discussing electronics in a diy group.

This may not be an important effect, depending on the speaker design,
but for about 20p worth of wire I am inclined not to risk it.

there is no risk