[August Karlstrom]

On 2010-10-15 21:41, Arny Krueger wrote:
In general the acccuracy requirements
for live sound are somewhat relaxed as compared to high-accuracy home or
mastering/mixing room audio. The Wikipedia article wire length
recommendations seem to be based on maintaining a damping factor of about 20
which again is somewhat relaxed as compared to the requirements for high
performance audio. I would recomment using a criteria of maintaining the
damping factor between 50 and 100.

That's interesting. I read the article with the impression that they
were talking about home audio. The Wikipedia article probably needs to
be updated then. If we would make a similar table applicable to high
performance audio, what would it look like?

I have also heard that output power and damping factor
should be considered as well - a high power amplifier
needs a thicker cable.

Generally speaking, sizing wire for a good damping factor will result in
adequate capacitor for the kinds of power amps generally used for home
audio.

Sorry, I'm not sure what that means in a practical sense. To take a
concrete example, let's say I have two 2x1.5 mm^2 (approx.15 AWG) OFC
cables, each of length four meter. Is there a high performance system in
which these cables would be insufficient?

Are there any studies made about the wire length contra
output power and damping factor?

Yes. The Greiner JAES paper is a classic and covers other issues. If the
speakers being used have unusually variable and low impecance curves then
the resistance and inductance of the speaker cable become more signficant.

OK, thanks for the reference Arny.


/August