wrote:
You need to look at it from the viewpoint of what does the lower
resistance buy you, and it is not insignificant. Low end amplifiers
have damping factors of a few hundred. A high end product (say a Jeff
Rowland design) can have a damping factor of 1000. So your high end amp
has an output impedance of 8 milliohms, and maybe 30 milliohms for the
average amp.

http://www.epanorama.net/documents/w...esistance.html

Let's ignore the skin effect for the sake of simplicity, i.e. will will
deal with DC resistance. [The skin effect at audio isn't that big of a
deal.] Using cheesy 18 guage wire, you have 7.5milliohms per foot,
while 12 guage is about 2 milliohms per foot. For twenty foot runs
(i.e both sides of the cable), this yields 150 milliohms and 40
milliohms. Thus you spent all that money on a amp to control the
speaker, but the wire resistance is at least 5 times greater than the
output impedance of the amp.

Is heavy wire a good idea? Yes, Does it have to be fancy stuff? No.


Very well written, and my view exactly, though I couldn't have
stated it with that technical clarity.

Tony

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